Trial Outcomes & Findings for Imaging GABAergic/Glutamatergic Drugs in Bipolar Alcoholics Alcoholics (NCT NCT03220776)

NCT ID: NCT03220776

Last Updated: 2023-12-13

Results Overview

Concentrations of GABA+, referenced to unsuppressed water and corrected for within-voxel CSF proportion, in dorsal anterior cingulate cortex measured via Proton Magnetic Resonance Spectroscopy (i.e., MEGA-PRESS).

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

54 participants

Primary outcome timeframe

Day 5 of each experimental condition

Results posted on

2023-12-13

Participant Flow

Participant milestones

Participant milestones
Measure
Gabapentin, Washout, Then N-Acetylcysteine, Washout, Then Placebo Oral Capsule, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo
N-Acetylcysteine, Washout, Then Placebo Oral Capsule, Washout, Then Gabapentin, Washout
3, 1 week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg
Placebo Oral Tablet, Washout, Then Gabapentin, Washout, Then N-Acetylcysteine, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg
Placebo Oral Capsule, Washout, Then N-Acetylcysteine, Washout, Then Gabapentin, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg
Gabapentin, Washout, Then Placebo Oral Capsule, Washout, Then N-Acetylcysteine, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg
N-Acetylcysteine, Washout, Then Gabapentin, Washout, Then Placebo Oral Capsule, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo
Overall Study
STARTED
9
9
9
9
9
9
Overall Study
COMPLETED
7
8
8
5
8
7
Overall Study
NOT COMPLETED
2
1
1
4
1
2

Reasons for withdrawal

Reasons for withdrawal
Measure
Gabapentin, Washout, Then N-Acetylcysteine, Washout, Then Placebo Oral Capsule, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo
N-Acetylcysteine, Washout, Then Placebo Oral Capsule, Washout, Then Gabapentin, Washout
3, 1 week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg
Placebo Oral Tablet, Washout, Then Gabapentin, Washout, Then N-Acetylcysteine, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg
Placebo Oral Capsule, Washout, Then N-Acetylcysteine, Washout, Then Gabapentin, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg
Gabapentin, Washout, Then Placebo Oral Capsule, Washout, Then N-Acetylcysteine, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg
N-Acetylcysteine, Washout, Then Gabapentin, Washout, Then Placebo Oral Capsule, Washout
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo
Overall Study
Claustrophobia
0
1
1
0
1
0
Overall Study
MRI Equipment Failure
1
0
0
0
0
0
Overall Study
Inclimate Weather
0
0
0
0
0
1
Overall Study
Physician Decision
0
0
0
1
0
0
Overall Study
Potential presence of non-MRI safe metal in body
0
0
0
1
0
0
Overall Study
Protocol Violation
0
0
0
2
0
1
Overall Study
Withdrawal by Subject
1
0
0
0
0
0

Baseline Characteristics

Imaging GABAergic/Glutamatergic Drugs in Bipolar Alcoholics Alcoholics

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Gabapentin, Then N-Acetylcysteine, Then Placebo Oral Capsule
n=9 Participants
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo
N-Acetylcysteine, Then Placebo Oral Capsule, Then Gabapentin
n=9 Participants
3, 1 week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg
Placebo Oral Tablet, Then Gabapentin, Then N-Acetylcysteine
n=9 Participants
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg
Placebo Oral Capsule, Then N-Acetylcysteine, Then Gabapentin
n=9 Participants
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg
Gabapentin, Then Placebo Oral Capsule, Then N-Acetylcysteine
n=9 Participants
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg
N-Acetylcysteine, Then Gabapentin, Then Placebo Oral Capsule
n=9 Participants
Three, 1-week conditions. Week 1 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg Week 2 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg Week 3 condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo
Total
n=54 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
Age, Categorical
Between 18 and 65 years
9 Participants
n=5 Participants
9 Participants
n=7 Participants
9 Participants
n=5 Participants
9 Participants
n=4 Participants
9 Participants
n=21 Participants
9 Participants
n=8 Participants
54 Participants
n=8 Participants
Age, Categorical
>=65 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
Age, Continuous
41.33 years
n=5 Participants
41.22 years
n=7 Participants
41.11 years
n=5 Participants
39.44 years
n=4 Participants
42.44 years
n=21 Participants
38.22 years
n=8 Participants
40.63 years
n=8 Participants
Sex: Female, Male
Female
5 Participants
n=5 Participants
5 Participants
n=7 Participants
5 Participants
n=5 Participants
5 Participants
n=4 Participants
6 Participants
n=21 Participants
5 Participants
n=8 Participants
31 Participants
n=8 Participants
Sex: Female, Male
Male
4 Participants
n=5 Participants
4 Participants
n=7 Participants
4 Participants
n=5 Participants
4 Participants
n=4 Participants
3 Participants
n=21 Participants
4 Participants
n=8 Participants
23 Participants
n=8 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
2 Participants
n=21 Participants
0 Participants
n=8 Participants
2 Participants
n=8 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
9 Participants
n=5 Participants
9 Participants
n=7 Participants
9 Participants
n=5 Participants
9 Participants
n=4 Participants
7 Participants
n=21 Participants
9 Participants
n=8 Participants
52 Participants
n=8 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
1 Participants
n=21 Participants
0 Participants
n=8 Participants
1 Participants
n=8 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
Race (NIH/OMB)
Black or African American
2 Participants
n=5 Participants
3 Participants
n=7 Participants
2 Participants
n=5 Participants
3 Participants
n=4 Participants
2 Participants
n=21 Participants
1 Participants
n=8 Participants
13 Participants
n=8 Participants
Race (NIH/OMB)
White
6 Participants
n=5 Participants
6 Participants
n=7 Participants
7 Participants
n=5 Participants
6 Participants
n=4 Participants
6 Participants
n=21 Participants
8 Participants
n=8 Participants
39 Participants
n=8 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
1 Participants
n=8 Participants
Region of Enrollment
United States
9 participants
n=5 Participants
9 participants
n=7 Participants
9 participants
n=5 Participants
9 participants
n=4 Participants
9 participants
n=21 Participants
9 participants
n=8 Participants
54 participants
n=8 Participants

PRIMARY outcome

Timeframe: Day 5 of each experimental condition

Population: Overall number of participants analyzed includes participants who completed the entire medication condition (i.e. participants who started N-Acetylcysteine, Gabapentin, or Placebo Oral Tablet but who did not complete the MRI portion of the condition have been removed from outcome measure data analysis, but are included in other portions of this study record \[Adverse Events, Demographics, etc.\]).

Concentrations of GABA+, referenced to unsuppressed water and corrected for within-voxel CSF proportion, in dorsal anterior cingulate cortex measured via Proton Magnetic Resonance Spectroscopy (i.e., MEGA-PRESS).

Outcome measures

Outcome measures
Measure
N-Acetylcysteine
n=43 Participants
Each 1-week condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg
Gabapentin
n=41 Participants
Each 1-week condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg
Placebo Oral Tablet
n=46 Participants
Each 1-week condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo
Prefrontal GABA+ Concentrations
3.90 mmol/kg
Standard Deviation 0.543
3.93 mmol/kg
Standard Deviation 0.646
3.73 mmol/kg
Standard Deviation 0.705

PRIMARY outcome

Timeframe: Day 5 of each experimental condition

Population: Overall number of participants analyzed includes participants who completed the entire medication condition (i.e. participants who started N-Acetylcysteine, Gabapentin, or Placebo Oral Tablet but who did not complete the MRI portion of the condition have been removed from outcome measure data analysis, but are included in other portions of this study record \[Adverse Events, Demographics, etc.\]).

Concentrations of Glx (i.e., glutamate + glutamine), referenced to unsuppressed water and corrected for within-voxel CSF proportion, in dorsal anterior cingulate cortex measured via Proton Magnetic Resonance Spectroscopy.

Outcome measures

Outcome measures
Measure
N-Acetylcysteine
n=43 Participants
Each 1-week condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 2,400mg N-acetylcysteine) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg
Gabapentin
n=41 Participants
Each 1-week condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (i.e., 1,200mg gabapentin) (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Gabapentin: 5 day trial of gabapentin with titration to 1,200mg
Placebo Oral Tablet
n=46 Participants
Each 1-week condition will consist of an in-person study visit for assessment and dispensing of medication (Day 1), titration to maximum dose (Days 1-5), MRI (Day 5), and medication washout (Days 5-7). Placebo Oral Tablet: 5 day trial of matched placebo
Prefrontal Glx Concentrations
21.59 mmol/kg
Standard Deviation 2.518
21.69 mmol/kg
Standard Deviation 2.499
22.25 mmol/kg
Standard Deviation 2.746

Adverse Events

N-Acetylcysteine

Serious events: 0 serious events
Other events: 10 other events
Deaths: 0 deaths

Gabapentin

Serious events: 0 serious events
Other events: 9 other events
Deaths: 0 deaths

Placebo Oral Tablet

Serious events: 0 serious events
Other events: 6 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
N-Acetylcysteine
n=48 participants at risk
N-Acetylcysteine: 5 day trial of N-acetylcysteine with titration to 2,400mg
Gabapentin
n=48 participants at risk
Gabapentin: 5 day trial of gabapentin with titration to 1,200mg
Placebo Oral Tablet
n=51 participants at risk
Placebo Oral Tablet: 5 day trial of matched placebo
Psychiatric disorders
insomnia
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.0%
1/51 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Nervous system disorders
headache
4.2%
2/48 • Number of events 2 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.0%
1/51 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Nervous system disorders
Dizziness
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
6.2%
3/48 • Number of events 3 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
3.9%
2/51 • Number of events 2 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
General disorders
Fatigue
6.2%
3/48 • Number of events 3 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.0%
1/51 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Gastrointestinal disorders
Nausea
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Psychiatric disorders
Anxiety
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.0%
1/51 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Metabolism and nutrition disorders
Decreased Appetite
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.0%
1/51 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Nervous system disorders
Lightheadedness
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Cardiac disorders
Dyspnea
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.0%
1/51 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Psychiatric disorders
Memory Impairment
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.0%
1/51 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Nervous system disorders
Somnolence
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Nervous system disorders
Convulsion
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
General disorders
Irritability
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Psychiatric disorders
Mood Swings
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.0%
1/51 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Psychiatric disorders
Dissociation
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Gastrointestinal disorders
Teeth Grinding
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Gastrointestinal disorders
Vomiting
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Injury, poisoning and procedural complications
Skin Abrasion
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Skin and subcutaneous tissue disorders
Skin Odor
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Gastrointestinal disorders
Constipation
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
Gastrointestinal disorders
Gastroesophageal Reflux Disease (GERD)
2.1%
1/48 • Number of events 1 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/48 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.
0.00%
0/51 • Adverse Event data were collected over each participant's total study duration. This duration was a 3-week period for each participant (i.e. 3, 1-week condition periods). Adverse event data collection took place for the entirety of the study which was 6 years.
At each study visit following the initial screening visit, study participants were assessed by the study medical doctor for any adverse events. Adverse events were recorded, rated on a severity scale, determined their relation to the study medication, and any treatment or intervention needed was discussed. The study medical doctor followed up with all previously reported adverse events at the following visits to determine if the events had ceased.

Additional Information

James J. Prisciandaro, Ph.D.

Medical University of South Carolina

Phone: 843-792-1433

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place