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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Guaifenesin Clear all
Completed Phase 4 Interventional Results available

Treatment of Acute Sinusitis

NCT00377403
View directory record Official record
Conditions
Acute Respiratory Infections, Acute Rhinosinusitis
Interventions
Acetaminophen, Amoxicillin, Dextromethorphan hydrobromide with guaifenesin, Guaifenesin, Pseudoephedrine Sustained Action, Saline spray (0.65%)
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 27, 2012 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Safety and Efficacy of Mucinex and IR Guaifenesin the Treatment of Symptoms of Acute Upper Respiratory Tract Infections

NCT01537081
View directory record Official record
Conditions
Acute Upper Respiratory Tract Infection
Interventions
Mucinex, Immediate-release Guaifenesin, Placebo
Drug
Lead sponsor
Reckitt Benckiser LLC
Industry
Eligibility
12 Years and older
Enrollment
2,810 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
43
States / cities
Hoover, Alabama • Bell Gardens, California • Harbor City, California + 38 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2013 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 2 Interventional

Safety and Efficacy Study of A0001 in Subjects With Friedreich's Ataxia

NCT01035671
View directory record Official record
Conditions
Friedreich's Ataxia
Interventions
alpha-tocopherolquinone (A0001), placebo
Drug
Lead sponsor
Penwest Pharmaceuticals Co.
Industry
Eligibility
18 Years to 60 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 21, 2011 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 2 Interventional Results available

A Study of Laquinimod in Participants With Systemic Lupus Erythematosus (SLE) Active Lupus Nephritis

NCT01085097
View directory record Official record
Conditions
Lupus Nephritis
Interventions
Laquinimod, Mycophenolate Mofetil, Prednisolone/Prednisone, Placebo, Methylprednisolone
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
14
States / cities
Phoenix, Arizona • La Jolla, California • Los Angeles, California + 10 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2022 · Synced Sep 28, 2026, 5:11 PM EDT
Completed No phase listed Observational

Intravenous Methocarbamol for Acute Pain After Spine Surgery

NCT06659965
View directory record Official record
Conditions
Acute Post Operative Pain, Postsurgical Pain Management, Spine Surgery, Acute Pain, Postoperative, Multimodal Analgesia
Interventions
Intravenous Methocarbamol
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
1,270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Vonoprazan Compared to Lansoprazole in Participants With Helicobacter Pylori Infection

NCT04167670
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
Vonoprazan, Amoxicillin, Clarithromycin, Lansoprazole
Drug
Lead sponsor
Phathom Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,046 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
106
States / cities
Anniston, Alabama • Athens, Alabama • Birmingham, Alabama + 84 more
Source: ClinicalTrials.gov public record
Updated Apr 4, 2022 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Not applicable Interventional Results available

Exploratory Efficacy Study of Guaifenesin in Upper Back Pain

NCT01562548
View directory record Official record
Conditions
Upper Back Pain
Interventions
Guaifenesin, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
5
States / cities
Fair Oaks, California • San Diego, California • Cincinnati, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2014 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A First in Human Study of RT001 in Patients With Friedreich's Ataxia

NCT02445794
View directory record Official record
Conditions
Friedreich's Ataxia
Interventions
Low dose cohort, High dose cohort
Drug
Lead sponsor
Biojiva LLC
Industry
Eligibility
18 Years to 50 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
2
States / cities
Long Beach, California • Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Nov 26, 2020 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Not applicable Interventional Results available

Sleepiness and the Effects of CPAP on Salivary Cortisol and Alpha-Amylase Levels in Patients With Sleep Apnea

NCT01196117
View directory record Official record
Conditions
Sleep Apnea, Sleep Disordered Breathing
Interventions
14 days of placebo therapy, 14 days of CPAP therapy
Device
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years to 90 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 31, 2020 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 4 Interventional Results available

Effects of Isotretinoin on CYP2D6 Activity

NCT03076021
View directory record Official record
Conditions
CYP2D6 Polymorphism
Interventions
Isotretinoin, dextromethorphan
Drug
Lead sponsor
University of Washington
Other
Eligibility
12 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 27, 2025 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 3 Interventional Results available

Open-Label, Long-term Balsalziade Disodium Tablet Ulcerative Colitis Study

NCT00486031
View directory record Official record
Conditions
Inflammatory Bowel Disease, Ulcerative Colitis
Interventions
Balsalazide Disodium
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
443 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
95
States / cities
Birmingham, Alabama • Tempe, Arizona • Fayetteville, Arkansas + 82 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2019 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 4 Interventional

Phase 4 Study - Mucinex D as Adjunct Therapy

NCT00441246
View directory record Official record
Conditions
Acute Respiratory Infection, Bronchitis, Rhinosinusitis
Interventions
Mucinex D (600 mg guaifenesin and 60 mg pseudoephedrine HCl extended-release bi-layer tablets)
Drug
Lead sponsor
Adams Respiratory Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
28
States / cities
Birmingham, Alabama • Carmichael, California • Torrance, California + 24 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2008 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Dextromethorphan as a Novel Non-opioid Adjunctive Agent for Pain Control in Medication Abortion

NCT03480009
View directory record Official record
Conditions
Abortion in First Trimester
Interventions
Dextromethorphan Hydrobromide, Avicel PH101 (Microcrystalline Cellulose NF) for Compounding, Oxycodone
Drug
Lead sponsor
Study Investigator-Sponsor
Other
Eligibility
18 Years and older · Female only
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Not applicable Interventional

Safety and Tolerability of Serum Derived Bovine Immunoglobulin in Children With Diarrhea Predominant IBS

NCT02358694
View directory record Official record
Conditions
Diarrhea Predominant Irritable Bowel Syndrome
Interventions
Serum-Derived Bovine Immunoglobulin, Placebo
Dietary Supplement · Other
Lead sponsor
Connecticut Children's Medical Center
Other
Eligibility
8 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 17, 2019 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Topical R333 in Patients With Discoid Lupus Erythematosus (DLE) and Systemic Lupus Erythematosus (SLE) Lesions

NCT01597050
View directory record Official record
Conditions
Lupus Erythematosus, Discoid, Lupus Erythematosus, Systemic
Interventions
R932333, Placebo
Drug
Lead sponsor
Rigel Pharmaceuticals
Industry
Eligibility
18 Years to 75 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
12
States / cities
Los Angeles, California • Redwood City, California • South Bend, Indiana + 9 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2016 · Synced Sep 28, 2026, 5:11 PM EDT
Terminated Phase 4 Interventional Results available

Dextromethorphan Pediatric Acute Cough Study

NCT02651116
View directory record Official record
Conditions
Cough
Interventions
Dextromethorphan Hydrobromide, Placebo, Cough recording device
Drug · Device
Lead sponsor
Pfizer
Industry
Eligibility
6 Years to 11 Years
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
18
States / cities
DeLand, Florida • Orlando, Florida • Blackfoot, Idaho + 13 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2021 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 3 Interventional

Balsalazide Disodium vs. Mesalamine in Mildly to Moderately Active Ulcerative Colitis

NCT00408174
View directory record Official record
Conditions
Inflammatory Bowel Disease, Ulcerative Colitis
Interventions
Balsalazide disodium
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
88
States / cities
Tempe, Arizona • Tucson, Arizona • Fayetteville, Arkansas + 74 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2019 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 3 Interventional Results available

Methotrexate and Mycophenolate Mofetil for UVEITIS

NCT01829295
View directory record Official record
Conditions
Uveitis
Interventions
Mycophenolate mofetil, Methotrexate, Prednisone
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
16 Years and older
Enrollment
216 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
3
States / cities
San Francisco, California • Chicago, Illinois • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 1, 2024 · Synced Sep 28, 2026, 5:11 PM EDT
Terminated Not applicable Interventional

To Evaluate the Impact of SBI on C. Difficile in Hospitalized UC Patients

NCT02730325
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Serum-derived bovine immunoglobulin/protein isolate (SBI), Placebo
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
3
States / cities
Miami, Florida • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 17, 2021 · Synced Sep 28, 2026, 5:11 PM EDT
Active, not recruiting Phase 2 Interventional

Triac Trial II in MCT8 Deficiency Patients

NCT02396459
View directory record Official record
Conditions
Allan-Herndon-Dudley Syndrome
Interventions
Tiratricol
Drug
Lead sponsor
Rare Thyroid Therapeutics International AB
Industry
Eligibility
Up to 30 Months · Male only
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
2
States / cities
Portland, Oregon • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 2 Interventional Results available

Mucinex Exploratory Cold Study

NCT01046136
View directory record Official record
Conditions
Common Cold
Interventions
guaifenesin (Mucinex), placebo
Drug
Lead sponsor
Reckitt Benckiser Inc.
Industry
Eligibility
12 Years and older
Enrollment
378 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
1
States / cities
Bellevue, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 29, 2020 · Synced Sep 28, 2026, 5:11 PM EDT
Completed Phase 4 Interventional

A Study to Explore if Long-term Use of Mucinex Can Help With Symptoms in Patients With Stable Chronic Bronchitis.

NCT05843669
View directory record Official record
Conditions
Chronic Bronchitis
Interventions
Guafenesin tablets
Drug
Lead sponsor
American Health Research
Other
Eligibility
40 Years to 90 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
2
States / cities
Charlotte, North Carolina • Rock Hill, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Sep 28, 2026, 5:11 PM EDT
Terminated Not applicable Interventional

To Evaluate SBI in the Dietary Management of Mild to Moderate Crohn's Disease

NCT02649075
View directory record Official record
Conditions
Crohn's Disease
Interventions
Serum-derived Bovine Immunoglobulin / Protein Isolate, Placebo
Other
Lead sponsor
Entera Health, Inc
Industry
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
7
States / cities
North Little Rock, Arkansas • Hollywood, Florida • Winter Park, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 3, 2017 · Synced Sep 28, 2026, 5:11 PM EDT
Recruiting Phase 3 Interventional

A 52-Week Trial to Investigate the Efficacy and Safety of Delgocitinib Cream in Adult Participants With Lichen Sclerosus

NCT07335588
View directory record Official record
Conditions
Lichen Sclerosus
Interventions
Delgocitinib, Cream Vehicle
Drug
Lead sponsor
LEO Pharma
Industry
Eligibility
18 Years and older
Enrollment
652 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
14
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 10 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Sep 28, 2026, 5:11 PM EDT