Impact of GABA Probiotic Lactiplantibacillus Plantarum Lp815 on Sleep Outcomes in Participants with Self-Reported Sleep Disturbance

NCT ID: NCT06789718

Last Updated: 2025-01-23

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Total Enrollment: 150 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2024-11-04
• Study Completion Date: 2025-03-01

Brief Summary

The rationale for this study is to observe differences in sleep outcomes between a consumer-grade probiotic capsule called GABA Probiotic and a placebo control group. Additionally, the study aims to evaluate the impact of the probiotic product on anxiety, gastrointestinal symptoms, sleep quality, daytime alertness, mood, stress, severity of night sweats (if present), and quality of life. In a subset of participants, the study also aims to evaluate how the probiotic affects neurotransmitter levels in the body using an at-home urinary test. A consumer-driven, decentralized observational clinical research study is therefore well-suited for evaluating the impact of this probiotic product in this population.

Detailed Description

Gamma-aminobutyric acid (GABA) is a major inhibitory neurotransmitter in the human nervous system, helping to slow down the stimulation of nerve signals in the brain. GABA plays a pivotal role in calming anxiety, reducing stress and improving sleep. Deficits in GABA levels can lead to a cascade of disorders ranging from anxiety and stress to mood swings and depression. Advancements in understanding the role of the microbiome in the Gut-Brain Axis have highlighted its untapped potential in regulating mood, stress, and sleep via neurotransmitter production.

Several bacterial strains, including lactic acid bacteria, bifidobacteria and others, have demonstrated GABA production capabilities. However, the magnitude of GABA output varies among these strains, and their efficacy in GABA synthesis within the human gastrointestinal environment is uncertain. This stems from the fact that GABA synthesis, typically a pH-stress response, stalls in less acidic environments.

Lactiplantibacillus plantarum Lp815 stands out. Using advanced computational and high-throughput screening techniques, we identified this strain's superior GABA production capability. Remarkably, it synthesizes a significant amount of GABA within the physiologically relevant pH range.

The study will evaluate self-reported sleep disturbance in a broad age-range of adults who have chosen to try this product. The study will incorporate participant reported outcome questionnaires and surveys, the use of a health tracking wearable device to explore objective digital outcome measures of sleep, heart rate and heart rate variability and in a subset of participants, the study will utilize an at-home urinary test to evaluate neurotransmitter levels in the body. There is no "doctor-patient" relationship as part of this research since the participant as a consumer is making the informed choice to take the product and take part in the observational process with self-reported measures and a simple urine test that can be done at home. Findings from this study will contribute knowledge toward the dosing and formulation of the probiotic product and the design of future studies.

Conditions

Insomnia (moderate)

Study Design

• Observational Model Type: CASE_CONTROL
• Study Time Perspective: PROSPECTIVE

Study Groups

Study Product

Participants who meet the study eligibility criteria will be randomly assigned to the study product or the placebo group.

The study product will contain the GABA Probiotic Lactiplantibacillus plantarum Lp815 (5 Billion cfu/dose) and Microcrystalline Methylcellulose.

GABA Probiotic Lactiplantibacillus plantarum Lp815 (5 Billion cfu/dose)

Intervention Type: DIETARY_SUPPLEMENT

75 participants will be randomized into the study product group.

Placebo

Participants who meet the study eligibility criteria will be randomly assigned to the study product or the placebo group.

The study placebo will only contain Microcrystalline Methylcellulose.

Placebo

Intervention Type: OTHER

75 participants will be randomized into the placebo group.

Optional Sub-Study: Neurotransmitter Urine Test

Participants who meet the study eligibility criteria and who opt-in to the sub-study will be given the Optional Sub-Study Informed Consent Form and be asked to complete neurotransmitter urine tests during baseline, day 2, day 4, day 7, day 14, day 28, and day 42 in parallel with the main study requirements. The cap for entering the sub-study will be 20 participants out of the 150 on a first-come first-serve basis.

Optional Sub-Study: Neurotransmitter Urine Test

Intervention Type: DIAGNOSTIC_TEST

20 participants who opt-in to the sub-study will provide urine tests during baseline, day 2, day 4, day 7, day 14, day 28, and day 42 while simultaneously participating in the main-study.

Interventions

GABA Probiotic Lactiplantibacillus plantarum Lp815 (5 Billion cfu/dose)

75 participants will be randomized into the study product group.

Intervention Type: DIETARY_SUPPLEMENT

Placebo

75 participants will be randomized into the placebo group.

Intervention Type: OTHER

Optional Sub-Study: Neurotransmitter Urine Test

20 participants who opt-in to the sub-study will provide urine tests during baseline, day 2, day 4, day 7, day 14, day 28, and day 42 while simultaneously participating in the main-study.

Intervention Type: DIAGNOSTIC_TEST

Eligibility Criteria

Inclusion Criteria

• Age > 18 years old
• Has self-reported sleep disturbance
• Insomnia Severity Index (ISI) score of > 15, with score on question on difficulty falling asleep > 2 ("moderate") at screening
• Interested in understanding more about their sleep and choose to use the probiotic product
• Willing to do a 1-week washout out of any OTC or other products for sleep and/or (e.g. melatonin, anticholinergics, valerian root etc.) prior to randomization and refrain from use for the duration of the study
• Willing to do a 4-week washout from any systemic antibiotic, prebiotic, probiotic and postbiotic use prior to randomization
• If taking prescription medications for sleep and/or anxiety (e.g. Benzodiazepines, zolpidem, zaleplon, SSRIs, Buspirone, Tricyclics, MAOIs), or other class of medication for sleep, must be on a "stable dose" for at least 4 weeks prior to randomization. "Stable dose" is defined as no changes in dosage or frequency of the specified medications for at least 4 weeks prior to randomization and throughout the study period.
• If using any cannabis-containing products, must be on a stable dose for at least 4 weeks prior to randomization and consume < 10 mg/day of THC
• If regularly consuming alcohol, must be willing to stay on a stable amount throughout the study period and to log alcohol consumption.
• In good general health at the time of screening (Investigator discretion).
• Able to read and understand English.
• Able to read, understand, and provide informed consent.
• Able to use a personal smartphone device and download Chloe by People Science.
• Able to receive shipment of the product at an address within the United States.
• Is willing to wear, sync daily, and charge twice weekly a provisioned health tracking wearable device (Oura ring) everyday (up to 7 weeks) during sleep. If the participant already has an Oura ring, they can use their own device and account.
• Able to complete study assessments over the course of up to 7 weeks.

Exclusion Criteria

• Do not have a smartphone and/or internet access.
• Concomitant Therapies:

• Participants taking prescription medication for sleep and/or anxiety (e.g. Benzodiazepines, zolpidem, zaleplon, SSRIs, Buspirone, Tricyclics, MAOIs) not on a stable dose for at least 4 weeks
• Participants receiving Cognitive Behavioral Therapy for Insomnia (CBTi)
• Participants receiving any investigational therapies or treatments within 30 days prior to randomization.
• Participants taking any other prescription medications that impact systemic GABA levels (e.g., GABA supplements, barbiturates, gabapentin, pregabalin, valproate, tiagabine, vigabatrin, baclofen)
• Participants currently taking or have taken probiotics, prebiotics or postbiotics within the past 4 weeks prior to randomization.
• Current antibiotic use or use within 4 weeks prior to randomization.
• Other Illnesses or Conditions: Participants who have the following conditions or comorbidities are excluded:

• Confirmed diagnoses of the following sleep disorders: Narcolepsy, Restless Leg Syndrome, Circadian Rhythm Disorders
• Confirmed diagnosis of Sleep Apnea that is untreated or not well controlled
• Known diagnosis of Inflammatory Bowel Disease (Crohn's Disease or Ulcerative Colitis) or Irritable Bowel Syndrome
• Current or prior history of psychotic disorder
• Confirmed diagnosis of major depressive disorder or bipolar disorder
• Diagnosed with Alcohol or Substance Abuse Disorder
• Currently pregnant, planning to become pregnant in the next 1 month, or breastfeeding
• Presence of any infection or illness that causes chronic night-waking or impairs ability to retain urine overnight (e.g., chronic pain, uncontrolled benign prostatic hyperplasia, prostatitis, urinary tract infection, catheterization, etc.).
• Have a significant illness, disease or condition which, in the opinion of the principal investigator, may impact their ability to participate in the trial or impact the trial outcomes.
• Known hypersensitivity or previous allergic reaction to microcrystalline cellulose (MCC).
• Presence of another environmental factor that severely impacts sleep quality (e.g., a new baby, pet or other loved one that wakes frequently or needs frequent care or feeding throughout the night)
• Work in an environment requiring shift work (e.g., rotating shifts, night shifts, or irregular hours).
• Have any known and planned international travel during the study period.
• Are unlikely for any reason to be able to comply with the trial or considered unsuited for participation in the study by the Principal Investigator.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Verb Biotics LLC

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Noah Craft, MD

Role: PRINCIPAL_INVESTIGATOR

People Science, Inc.

Locations

People Science, Inc.

Los Angeles, California, United States

Countries

United States

Other Identifiers

PS12

Identifier Type: -

Identifier Source: org_study_id