Mechanisms Underlying Drug-Diet Interactions

NCT ID: NCT01034124

Last Updated: 2009-12-17

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

19 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-01-31

Study Completion Date

2008-06-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Similar to the well publicized "grapefruit juice effect", ongoing studies are evaluating the interaction potential of other dietary substances on drug disposition. This study is designed to determine whether the mechanism underlying the enhancement of the anticoagulative effect of warfarin by cranberry juice is due to inhibition of warfarin metabolism by the juice. A secondary objective is to determine whether cranberry juice elicits a grapefruit juice-type interaction with midazolam.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Pharmacokinetics

Keywords

Explore important study keywords that can help with search, categorization, and topic discovery.

warfarin midazolam cranberry juice pharmacokinetics

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Water

Group Type PLACEBO_COMPARATOR

warfarin, vitamin K, midazolam

Intervention Type DRUG

warfarin tablet single dose (10 mg) vitamin K tablet single dose (10 mg) midazolam syrup single dose (5 mg)

Cranberry juice

Group Type ACTIVE_COMPARATOR

warfarin, vitamin K, midazolam

Intervention Type DRUG

warfarin tablet single dose (10 mg) vitamin K tablet single dose (10 mg) midazolam syrup single dose (5 mg)

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

warfarin, vitamin K, midazolam

warfarin tablet single dose (10 mg) vitamin K tablet single dose (10 mg) midazolam syrup single dose (5 mg)

Intervention Type DRUG

Other Intervention Names

Discover alternative or legacy names that may be used to describe the listed interventions across different sources.

Coumadin Mephyton Versed

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* 18-65 years of age
* Healthy
* Not taking medications known to modulate CYP2C9 and CYP3A activity
* Able to understand the consent process

Exclusion Criteria

* Allergy to cranberry products, warfarin, vitamin K, or midazolam
* Pregnant or breast-feeding women
* Baseline INR \>1.2
* History of significant medical conditions that could increase risk
* Concomitant medications known to modulate CYP2C9 and CYP3A activity
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

University of North Carolina, Chapel Hill

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

The University of North Carolina, Chapel Hill

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Mary F Paine, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

UNC-Chapel Hill

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

UNC-Chapel Hill General Clinical Research Center

Chapel Hill, North Carolina, United States

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States

References

Explore related publications, articles, or registry entries linked to this study.

Ngo N, Yan Z, Graf TN, Carrizosa DR, Kashuba AD, Dees EC, Oberlies NH, Paine MF. Identification of a cranberry juice product that inhibits enteric CYP3A-mediated first-pass metabolism in humans. Drug Metab Dispos. 2009 Mar;37(3):514-22. doi: 10.1124/dmd.108.024968. Epub 2008 Dec 29.

Reference Type RESULT
PMID: 19114462 (View on PubMed)

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

UNC-CH 05-2951

Identifier Type: -

Identifier Source: org_study_id