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ClinicalTrials.gov public records Last synced Oct 18, 2026, 1:20 AM EDT

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Showing 1–24 of 45 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Methylnaltrexone Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Cimetidine on the Single-Dose PK of IV- Administered MNTX

NCT01366378
View directory record Official record
Conditions
Healthy Adult Subjects
Interventions
methylnaltrexone
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 27, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 3 Interventional Results available

Study of Intravenous (IV) Methylnaltrexone Bromide (MNTX) in the Treatment of Post-Operative Ileus (POI)

NCT00401375
View directory record Official record
Conditions
Post-Operative Ileus (POI)
Interventions
Methylnaltrexone, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
524 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Sep 4, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 1 Interventional

Dasatinib, Bevacizumab, Paclitaxel in Patients With Advanced Malignancies

NCT01015222
View directory record Official record
Conditions
Advanced Cancer
Interventions
Dasatinib, Bevacizumab, Paclitaxel
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 23, 2022 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 4 Interventional Results available

Effect of Methylnaltrexone on the PK/PD Profiles of Ticagrelor in Patients Treated With Morphine

NCT02403830
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Methylnaltrexone, Placebo, Morphine, Ticagrelor
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Tolerance and Pharmacokinetics Study of MNTX Tablets

NCT01366339
View directory record Official record
Conditions
Normal Healthy Volunteers
Interventions
Oral methylnaltrexone, Oral placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 27, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of Pharmacokinetics, Safety and Tolerability of Intravenous Methylnaltrexone Bromide

NCT01366365
View directory record Official record
Conditions
Healthy Adults
Interventions
methylnaltrexone, placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 27, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Naloxone and Intravenous Methylnaltrexone Effects on Bladder Function

NCT01367561
View directory record Official record
Conditions
Healthy Males
Interventions
Naloxone, IV Methylnaltrexone (MNTX), Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2003
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Apr 12, 2023 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 3 Interventional

Open-Label Treatment Extension of Protocol MNTX 301

NCT01367600
View directory record Official record
Conditions
Terminal Illness
Interventions
SC Methylnaltrexone (MNTX)
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 27, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetics, Safety, and Tolerability of Methylnaltrexone in Volunteers With Impaired Hepatic Function

NCT01367522
View directory record Official record
Conditions
Liver Dysfunction
Interventions
SC Methylnaltrexone (MNTX)
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 27, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluate the Pharmacokinetics (PK) of Methylnaltrexone (MNTX) in Healthy Adult Subjects

NCT01366326
View directory record Official record
Conditions
Healthy Adult Subjects
Interventions
Methylnaltrexone bromide
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 29, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety and Gastrointestinal Effects of Intravenous Methylnaltrexone

NCT01367587
View directory record Official record
Conditions
Healthy Volunteers
Interventions
IV Methylnaltrexone
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 27, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Withdrawn Phase 3 Interventional

Effect of Methylnaltrexone (Relistor) on Digestion and Tolerance to Tube Feeding in Patients Treated With Opiates

NCT01360372
View directory record Official record
Conditions
Tube Feeding
Interventions
Methylnaltrexone, Saline injection
Drug
Lead sponsor
Drexel University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 17, 2015 · Synced Oct 18, 2026, 1:20 AM EDT
Withdrawn No phase listed Observational

RELISTOR's Effects on Opioid-Induced Constipation

NCT04930237
View directory record Official record
Conditions
OIC
Interventions
Relistor Injectable Product, Docusate Calcium, Bisacodyl, Milk of magnesia, Magnesium citrate, Senna, Enema
Drug
Lead sponsor
Methodist Health System
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Oct 18, 2026, 1:20 AM EDT
Not listed Phase 3 Interventional

Methylnaltrexone for Treatment of Opiate-Induced Constipation in the Intensive Care Unit

NCT01050595
View directory record Official record
Conditions
Opioid-induced Constipation
Interventions
Methylnaltrexone Bromide, Placebo-Normal Saline
Drug
Lead sponsor
St. John Health System, Michigan
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Southfield, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 15, 2010 · Synced Oct 18, 2026, 1:20 AM EDT
Withdrawn Phase 2Phase 3 Interventional

A Study of Methylnaltrexone Bromide (MNTX) in Participants With Advanced Pancreatic Cancer

NCT04083651
View directory record Official record
Conditions
Pancreatic Cancer
Interventions
Methylnaltrexone bromide, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated May 7, 2021 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 4 Interventional Results available

Methylnaltrexone vs Naloxegol in the Treatment of Opioid-Induced Constipation

NCT03523520
View directory record Official record
Conditions
Constipation Drug Induced
Interventions
Methylnaltrexone Bromide 150 mg Oral Tablet, Methylnaltrexone Bromide 12 MG/0.6 ML Subcutaneous Solution [RELISTOR]_#1, Naloxegol 25 MG Oral Tablet
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 3 Interventional Results available

A Study Evaluating Intravenous (IV) MOA-728 for the Treatment of Postoperative Ileus (POI) in Participants After Ventral Hernia Repair

NCT00528970
View directory record Official record
Conditions
Ileus
Interventions
MOA-728, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
374 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
75
States / cities
Benton, Arkansas • Colton, California • Laguna Hills, California + 62 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 3 Interventional Results available

Study Evaluating Subcutaneous MOA-728 for the Treatment of Opioid-Induced Constipation (OIC) in Subjects With Chronic Non-Malignant Pain

NCT00529087
View directory record Official record
Conditions
Constipation
Interventions
N-methylnaltrexone bromide (MOA-728), placebo
Drug · Other
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
460 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
78
States / cities
Mobile, Alabama • Sun City, Arizona • Tucson, Arizona + 69 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 3 Interventional

Open-Label Treatment Extension of Protocol MNTX 302

NCT01367613
View directory record Official record
Conditions
Terminal Illness
Interventions
SC Methylnaltrexone
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 27, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 4 Interventional Results available

Study Evaluating Subcutaneous Methylnaltrexone For Treatment Of Opioid-Induced Constipation In Patients With Advanced Illness

NCT00672477
View directory record Official record
Conditions
Opioid-Induced Constipation
Interventions
Methylnaltrexone, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
237 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
29
States / cities
Mobile, Alabama • Laguna Hills, California • Lancaster, California + 23 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2018 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Methylnaltrexone on GI Transit in Healthy Volunteers

NCT01055704
View directory record Official record
Conditions
Gastric Motility Disorder
Interventions
Methylnaltrexone only, Codeine only, Methylnaltrexone + codeine, Placebo + placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 25, 2012 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 3 Interventional

A a Single Dose Efficacy Study in Inducing Laxation in Advance Illness Patients

NCT00401362
View directory record Official record
Conditions
Advanced Illness Patients With Opioid Induced Constipation
Interventions
SC Methylnaltrexone, SC Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 25, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 2 Interventional Results available

Study of Subcutaneous Methylnaltrexone (MNTX) in the Treatment of Opioid-Induced Constipation During Rehabilitation After Orthopedic Procedures

NCT00640146
View directory record Official record
Conditions
Opioid-induced Constipation
Interventions
Methylnaltrexone bromide, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Sep 4, 2019 · Synced Oct 18, 2026, 1:20 AM EDT
Completed Phase 3 Interventional Results available

Study Evaluating Long-Term Safety of MOA-728 in Participants With Opioid-Induced Constipation

NCT00804141
View directory record Official record
Conditions
Constipation
Interventions
N-methylnaltrexone bromide (MOA-728)
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,040 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
94
States / cities
Birmingham, Alabama • Chandler, Arizona • Mesa, Arizona + 76 more
Source: ClinicalTrials.gov public record
Updated Oct 18, 2019 · Synced Oct 18, 2026, 1:20 AM EDT