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ClinicalTrials.gov public records Last synced Oct 30, 2026, 9:50 AM EDT

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Showing 1–24 of 26 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Dextromethorphan and Caffeine Clear all
Not yet recruiting Phase 1 Interventional

A Study of LY3873862 in Participants With Sporadic or Familial Amyotrophic Lateral Sclerosis (ALS).

NCT07883590
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis, Cytochrome P-450 Enzyme System
Interventions
LY3873862, CYP450 Drug Cocktail, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 75 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
3
States / cities
San Francisco, California • Aurora, Colorado • Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

An Open Label, Single Dose, Three Part Study to Assess the Effects of Rolapitant (2 mg/mL IV Solution) on the Pharmacokinetics of Digoxin; Sulfasalazine; and the Cooperstown Cocktail (Midazolam, Omeprazole, Warfarin, Caffeine, and Dextromethorphan in Healthy Subjects

NCT02434861
View directory record Official record
Conditions
Chemotherapy-induced Nausea and Vomiting
Interventions
Rolapitant, Digoxin, Sulfasalazine, Cooperstown Cocktail
Drug
Lead sponsor
Tesaro, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 25, 2015 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 3 Interventional Results available

An Open-Label Immunogenicity and Pharmacokinetics Study of Daclizumab High Yield Process Prefilled Syringe in Relapsing Remitting Multiple Sclerosis

NCT01462318
View directory record Official record
Conditions
Relapsing-Remitting Multiple Sclerosis
Interventions
Midazolam, Caffeine, S-warfarin, Vitamin K, Omeprazole, Dextromethorphan, BIIB019 (Daclizumab)
Drug · Other · Biological
Lead sponsor
Biogen
Industry
Eligibility
18 Years to 65 Years
Enrollment
133 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
7
States / cities
Centennial, Colorado • Washington D.C., District of Columbia • Lake Barrington, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2017 · Synced Oct 30, 2026, 9:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Developmental Regulation of Proteins Responsible for Transforming Drugs in the Body

NCT00117715
View directory record Official record
Conditions
Healthy
Interventions
Genotyping and Phenotyping using dextromethorphan and caffeine as probes
Procedure
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
12 Months to 5 Years
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2010
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 12, 2017 · Synced Oct 30, 2026, 9:50 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

A Study Evaluating the Potential of BMS-984923 to Alter the Systemic Exposure of Three Orally Administered Probe Substrates

NCT06632990
View directory record Official record
Conditions
Drug Drug Interaction (DDI)
Interventions
BMS-984923, Midazolam, Caffeine, dextromethorphan
Drug
Lead sponsor
Allyx Therapeutics
Industry
Eligibility
18 Years to 50 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 7, 2025 · Synced Oct 30, 2026, 9:50 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Effect of Ustekinumab on Cytochrome P450 Enzyme Activities Following Induction and Maintenance Dosing in Participants With Active Crohn's Disease or Ulcerative Colitis

NCT03358706
View directory record Official record
Conditions
Crohn Disease, Ulcerative Colitis
Interventions
Ustekinumab IV Infusion, Ustekinumab SC Injection, Midazolam 2 mg, Warfarin 10 mg, Vitamin K 10 mg, Omeprazole 20 mg, Dextromethorphan 30 mg, Caffeine 100 mg
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
3
States / cities
Cypress, California • Miami Springs, Florida • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study With a Potential Alzheimer's Disease Compound

NCT00726726
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Interacting drugs - Cooperstown Cocktail (midazolam, warfarin, (+ vitamin K), caffeine, omeprazole and dextromethorphan), BMS-708163, BMS-708163 + Cooperstown Cocktail
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Hamilton, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 5, 2008 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Results available

A Study of Ixekizumab in Participants With Plaque Psoriasis

NCT02993471
View directory record Official record
Conditions
Psoriasis
Interventions
Drug Cocktail, Ixekizumab
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
3
States / cities
Anaheim, California • DeLand, Florida • High Point, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 12, 2019 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Results available

A Study of Abemaciclib in Participants With Cancer That is Advanced or Has Spread to Another Part(s) of the Body

NCT02688088
View directory record Official record
Conditions
Neoplasm Metastasis
Interventions
Drug Cocktail, Abemaciclib
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
5
States / cities
Denver, Colorado • Indianapolis, Indiana • Fairway, Kansas + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 18, 2022 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Open-Label, Multiple-Dose, Non-Randomized Study to Assess Drug-Drug Interactions of Proellex® in Female Subjects

NCT00741468
View directory record Official record
Conditions
Drug Interactions
Interventions
Proellex, CYP1A2 probe, CYP2C9 probe, CYP2C19 probe, CYP2D6 probe, CYP3A4 probe
Drug
Lead sponsor
Repros Therapeutics Inc.
Industry
Eligibility
18 Years to 48 Years · Female only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 22, 2014 · Synced Oct 30, 2026, 9:50 AM EDT
Recruiting Phase 1 Interventional

An Early-Stage Study in Multiple Clinics of How Afimkibart May Affect the Body's Processing of Medicines That Rely on Cytochrome P450 Enzymes in Participants With Ulcerative Colitis

NCT07665723
View directory record Official record
Conditions
Active Ulcerative Colitis
Interventions
Afimkibart, Caffeine, Warfarin, Omeprazole, Dextromethorphan, Midazolam, Vitamin K
Drug · Other
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 60 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
3
States / cities
Chula Vista, California • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Interactions Between Cannabinoids and Cytochrome P450-Metabolized Drugs

NCT04201197
View directory record Official record
Conditions
Drug-Interactions
Interventions
Inje cocktail, THC Cannabis extract, THC/CBD Cannabis Extract
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 50 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced Oct 30, 2026, 9:50 AM EDT
Completed No phase listed Observational

rhGH Therapy on Hepatic Drug Metabolism

NCT00458991
View directory record Official record
Conditions
Growth Hormone Deficiency, Dwarfism
Interventions
Dextromethorphan and Caffeine
Drug
Lead sponsor
University of Louisville
Other
Eligibility
4 Years to 14 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2008
U.S. locations
4
States / cities
San Diego, California • Louisville, Kentucky • Kansas City, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2017 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Hallucinogens and Other Drugs on Mood and Performance

NCT02033707
View directory record Official record
Conditions
Healthy
Interventions
Hallucinogens and psychoactive substances
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 16, 2019 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Results available

A Pharmacokinetic Study of RO5185426 in Combination With a Drug Cocktail in Patients With Metastatic Melanoma

NCT01001299
View directory record Official record
Conditions
Malignant Melanoma
Interventions
Drug cocktail, RO5185426
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
5
States / cities
Los Angeles, California • Boston, Massachusetts • Nashville, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 15, 2017 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug-Drug Interaction Study to Evaluate the Effects of Ecopipam on the Pharmacokinetics of Multiple Substrates for Drug Metabolism and Transport

NCT05334108
View directory record Official record
Conditions
Drug Interaction
Interventions
Ecopipam, Cohort 1 Probe Substrate Cocktail, Cohort 2 Probe Substrate, Cohort 3 Probe Substrate Cocktail
Drug · Combination Product
Lead sponsor
Emalex Biosciences Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Dec 12, 2022 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Results available

A Study of Mirikizumab in Participants With Plaque Psoriasis

NCT03718884
View directory record Official record
Conditions
Psoriasis
Interventions
Drug Cocktail, Mirikizumab
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
3
States / cities
Anaheim, California • DeLand, Florida • High Point, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 29, 2024 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Licorice Botanical Dietary Supplements - Metabolism and Safety in Women

NCT03948243
View directory record Official record
Conditions
Food-drug Interaction
Interventions
Licorice, Alprazolam 2 MG, Caffeine 100 MG, Tolbutamide 250 mg, Dextromethorphan 30mg
Dietary Supplement · Drug
Lead sponsor
University of Illinois Chicago
Other
Eligibility
40 Years to 79 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 6, 2023 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study to Evaluate Effect of Belatacept on Pharmacokinetics of Inje Cocktail in Healthy Volunteers

NCT01766050
View directory record Official record
Conditions
Transplant Rejection
Interventions
Caffeine, Losartan, Omeprazole, Dextromethorphan, Midazolam, Belatacept
Drug · Biological
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 45 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jun 27, 2014 · Synced Oct 30, 2026, 9:50 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Phase 4, Vedolizumab-4002 Post-marketing, Disease-Drug-Drug Interaction Study

NCT02760615
View directory record Official record
Conditions
Colitis, Ulcerative, Crohn Disease
Interventions
Caffeine, Losartan, Omeprazole, Dextromethorphan, Midazolam, Vedolizumab
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 55 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
2
States / cities
Cypress, California • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 27, 2020 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional

A Study To Test The Effect Of GW786034 (Pazopanib) On P450 Enzymes

NCT00401583
View directory record Official record
Conditions
Carcinoma, Renal Cell
Interventions
GW786034 (pazopanib), Probe drugs
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
21 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Nov 13, 2017 · Synced Oct 30, 2026, 9:50 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Drug-Drug Interaction Study to Evaluate the Effects of Ecopipam on the Pharmacokinetics of Multiple Substrates

NCT04764851
View directory record Official record
Conditions
Drug-Interactions
Interventions
ecopipam HCl ~2mg/kg/day, Cohort 1 Probe Cocktail, Cohort 2 Probe Cocktail, Cohort 3 Probe Cocktail
Drug · Combination Product
Lead sponsor
Emalex Biosciences Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 24, 2021 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 1 Interventional

Pharmacokinetic Study to Evaluate the Effect of a Single Dose of Guselkumab (CNTO 1959) on CYP 450 Enzyme Activities After Subcutaneous Administration in Participants With Psoriasis

NCT02397382
View directory record Official record
Conditions
Psoriasis
Interventions
Guselkumab, Midazolam, Warfarin, Omeprazole, Dextromethorphan, Caffeine
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
8
States / cities
Anniston, Alabama • North Hollywood, California • Orlando, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 20, 2017 · Synced Oct 30, 2026, 9:50 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Effects of Kava on the Body's Elimination of Caffeine and Dextromethorphan

NCT00009542
View directory record Official record
Conditions
Healthy
Interventions
kava (Piper methysticum)
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 30, 2026, 9:50 AM EDT