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Showing 1–23 of 23 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Pharmacokinetics of Methadone Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study Of Filibuvir With Methadone Among Subjects On Chronic Methadone Maintenance

NCT01210404
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
filibuvir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
2
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 6, 2011 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Clinical Trial in Healthy Participants to Study the Effect of a Single Dose of MK-8527 on Levels of Methadone (MK-8527-020)

NCT07528508
View directory record Official record
Conditions
Healthy
Interventions
MK-8527, Methadone
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Anniston, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 2 Interventional

Evaluation of L-alpha-acetylmethadol (LAAM) in Methadone Patients - 5

NCT00000356
View directory record Official record
Conditions
Opioid-Related Disorders, Substance-Related Disorders
Interventions
LAAM
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
1991 – 1992
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional Results available

Drug Interaction Study With BI 201335 and Methadone or Buprenorphine/Naloxone

NCT01637922
View directory record Official record
Conditions
Hepatitis C
Interventions
BI 201335
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years to 64 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
3
States / cities
Atlanta, Georgia • Overland Park, Kansas • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 2, 2015 · Synced Sep 25, 2026, 1:16 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Drug-drug Interaction Study of Bemnifosbuvir/Ruzasvir (BEM/RZR) and Buprenorphine/Naloxone or Methadone

NCT07314346
View directory record Official record
Conditions
Healthy Volunteer Study
Interventions
Buprenorphine/Naloxone + BEM/RZR, Methadone +BEM/RZR
Drug
Lead sponsor
Atea Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
3
States / cities
Hollywood, Florida • Overland Park, Kansas • Marlton, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Single Dose IV Methadone for Post-Op Pain

NCT05425420
View directory record Official record
Conditions
Pain, Postoperative
Interventions
methadone hydrochloride 0.1mg/kg
Drug
Lead sponsor
Kanecia Obie Zimmerman
Other
Eligibility
18 Years to 40 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 9, 2025 · Synced Sep 25, 2026, 1:16 PM EDT
Not yet recruiting No phase listed Observational

Methadone Dose Monitoring With a Remote Medication Monitor

NCT06837571
View directory record Official record
Conditions
Methadone Toxicity, Methadone Overdose, Pain, Chronic, Drug Metabolism, Poor, CYP2D6-Related, Metabolism Medication Toxicity
Interventions
Measurement of Methadone in the Interstitial Fluid (ISF) before and after prescribed dose taken ex vivo, Measurement of Methadone in the Interstitial Fluid before and after prescribed dose taken in vivo, ISF Extraction Device 2
Diagnostic Test · Drug · Device
Lead sponsor
Cari Health Inc.
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Lemon Grove, California
Source: ClinicalTrials.gov public record
Updated Feb 19, 2025 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional

Treatment of Heroin and Cocaine With Methadone Maintenance and Contingency Management

NCT00292110
View directory record Official record
Conditions
Opiate-Related Disorders, Cocaine-Related Disorders
Interventions
Methadone, Contingency Management, Methadone dose, Contingency Management/Noncontingent Incentives
Drug · Behavioral
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 65 Years
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study of Isavuconazole and Methadone

NCT01582425
View directory record Official record
Conditions
Pharmacokinetics of Isavuconazole, Pharmacokinetics of Methadone, Healthy Volunteers
Interventions
Isavuconazole, Methadone
Drug
Lead sponsor
Astellas Pharma Global Development, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Glendale, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2012 · Synced Sep 25, 2026, 1:16 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

A Study of Ulonivirine (MK-8507) and Methadone in Healthy Volunteers (MK-8507-019)

NCT07595263
View directory record Official record
Conditions
Healthy
Interventions
Ulonivirine, Methadone
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Anniston, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional

Methadone Pharmacokinetics and Cardiac Effects in Newborns

NCT00715988
View directory record Official record
Conditions
Pain
Interventions
Methadone HCl Inject 10 mg/ml (will require dilution), Methadone
Drug
Lead sponsor
University of Utah
Other
Eligibility
29 Weeks to 48 Weeks
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
2
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 31, 2022 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Epidural Methadone in Healthy Volunteers

NCT03525509
View directory record Official record
Conditions
Pain, Acute
Interventions
Methadone hydrochloride, Morphine Sulfate
Drug
Lead sponsor
simon.haroutounian
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 17, 2019 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Measuring the Amount of Methadone or Morphine in the Blood of Neonates, Infants & Children After Cardiac Surgery.

NCT01094522
View directory record Official record
Conditions
Pain
Interventions
Methadone, Morphine
Drug
Lead sponsor
Stanford University
Other
Eligibility
Up to 5 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
3
States / cities
Stanford, California • Denver, Colorado • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 17, 2017 · Synced Sep 25, 2026, 1:16 PM EDT
Recruiting No phase listed Observational

Assessment of Methadone Dose Taken

NCT05981573
View directory record Official record
Conditions
Methadone Toxicity, Methadone Overdose, Pain, Chronic, Drug Metabolism, Poor, CYP2D6-Related, Metabolism Medication Toxicity
Interventions
Measurement of Methadone in the Interstitial Fluid (ISF) before and after prescribed dose taken ex vivo, Measurement of Methadone in the Interstitial Fluid before and after prescribed dose taken in vivo, ISF Extraction Device 2
Diagnostic Test · Drug · Device
Lead sponsor
Cari Health Inc.
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Lemon Grove, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2025 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Co-Administration Of Fosamprenavir With Methadone: A Drug Interaction Study.

NCT00481182
View directory record Official record
Conditions
Healthy Subjects
Interventions
fosamprenavir + ritonavir + methadone
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2005
U.S. locations
2
States / cities
Baltimore, Maryland • Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Feb 22, 2009 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional

A Study to Assess the Effect of Concomitant Administration of Fluconazole on the Clinical Pharmacokinetics of Methadone

NCT00000788
View directory record Official record
Conditions
Candidiasis, HIV Infections
Interventions
Methadone hydrochloride, Fluconazole
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1994
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Nov 2, 2021 · Synced Sep 25, 2026, 1:16 PM EDT
Completed No phase listed Observational

Pharmacokinetics of Multiple Dose Methadone in Children Treated for Opiate Withdrawal

NCT01945736
View directory record Official record
Conditions
Opiate Withdrawal Syndrome
Interventions
Methadone
Drug
Lead sponsor
Kevin Watt
Other
Eligibility
91 Days to 18 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
5
States / cities
St. Petersburg, Florida • Kansas City, Kansas • Ann Arbor, Michigan + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 23, 2018 · Synced Sep 25, 2026, 1:16 PM EDT
Enrolling by invitation No phase listed Observational

Assessing Concentrations of Methadone and Its Metabolites

NCT06835582
View directory record Official record
Conditions
Opioid Use Disorder, Pain
Interventions
Methadone
Drug
Lead sponsor
Cari Health Inc.
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Lemon Grove, California
Source: ClinicalTrials.gov public record
Updated Feb 18, 2025 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Estimate The Effect Of Lersivirine On The Pharmacokinetics Of S- And R-Methadone

NCT01099748
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Methadone, Lersivirine + Methadone
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 29, 2010 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Islatravir and Methadone Pharmacokinetics (MK-8591-029)

NCT04568603
View directory record Official record
Conditions
HIV-1 Infection
Interventions
Islatravir
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
2
States / cities
Hollywood, Florida • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 27, 2025 · Synced Sep 25, 2026, 1:16 PM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Study Evaluating Oral MOA-728 in Subjects on Methadone Therapy

NCT00505583
View directory record Official record
Conditions
Methadone-maintenance Subjects
Interventions
MOA-728
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 28, 2019 · Synced Sep 25, 2026, 1:16 PM EDT
Completed No phase listed Observational

The Pharmacokinetics of Oral Methadone in the Treatment of Neonatal Abstinence Syndrome

NCT01754324
View directory record Official record
Conditions
Neonatal Abstinence Syndrome
Interventions
Methadone
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
Up to 1 Month
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
2
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 12, 2014 · Synced Sep 25, 2026, 1:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study Evaluating MOA-728 in Subjects on Stable Methadone Maintenance

NCT00447811
View directory record Official record
Conditions
Methadone-maintenance Subjects
Interventions
MOA-728
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Willingboro, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 24, 2019 · Synced Sep 25, 2026, 1:16 PM EDT