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Showing 1–24 of 55 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Acetazolamide Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Altitude Sickness Prevention and Efficacy of Comparative Treatments

NCT02604173
View directory record Official record
Conditions
Acute Mountain Sickness
Interventions
Budesonide, Acetazolamide, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Bishop, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced Sep 1, 2026, 9:59 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Central Sleep Apnea : Physiologic Mechanisms to Inform Treatment

NCT04118387
View directory record Official record
Conditions
Sleep Disordered Breathing, Able Bodied
Interventions
Acetazolamide + supplemental oxygen + PAP therapy, Zolpidem + PAP therapy, Buspirone + PAP therapy
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Sep 1, 2026, 9:59 AM EDT
Withdrawn Phase 2 Interventional

Evaluation of a Compliance Marker in Prescription Opioid Abusers With Chronic Pain

NCT02276989
View directory record Official record
Conditions
Compliance, Chronic Pain
Interventions
acetazolamide, Quinine, Riboflavin
Drug
Lead sponsor
Georgetown University
Other
Eligibility
18 Years to 50 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Sep 1, 2026, 9:59 AM EDT
Terminated Phase 2 Interventional Results available

Augmenting Cerebral Blood Flow to Treat Established Multiple Sclerosis

NCT02466074
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Acetazolamide, Placebo
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 55 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 26, 2023 · Synced Sep 1, 2026, 9:59 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Efficacy Study of Acetazolamide Versus Diazepam in Continuous Spike and Wave/Landau-Kleffner Syndrome

NCT02904265
View directory record Official record
Conditions
Landau-Kleffner Syndrome, Status Epilepticus, Electrographic
Interventions
Diazepam, Acetazolamide
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
3 Years to 12 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 10, 2020 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 1 Interventional

Treatment of Orthostatic Hypotension in Autonomic Failure

NCT00223691
View directory record Official record
Conditions
Autonomic Failure, Orthostatic Hypotension
Interventions
Atomoxetine, Acarbose, Pyridostigmine Bromide, Yohimbine, Midodrine HCl, placebo, Modafinil, Octreotide, water intake, Diphenhydramine Hydrochloride, Ranitidine HCL, Tranylcypromine, Ergotamine/ Caffeine, Celecoxib, Pseudoephedrine, Methylphenidate, Indomethacin, Ibuprofen, Oxymetazoline 0.05% nasal solution, Bovril, Acetazolamide, Rivastigmine tartrate, Carbidopa/levodopa, Inflatable abdominal binder, inflatable abdominal binder (sham)
Drug · Other · Dietary Supplement + 1 more
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 85 Years
Enrollment
389 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 17, 2017 · Synced Sep 1, 2026, 9:59 AM EDT
Recruiting Phase 2 Interventional

DReAMzz- Dronabinol and Acetazolamide Medication for Sleep Apnea (ZZ). Dose Confirmation Crossover Study for IHL-42X in Subjects With Obstructive Sleep Apnea.

NCT07635563
View directory record Official record
Conditions
Obstructive Sleep Apnea (OSA)
Interventions
IHL-42X: 2.5 mg dronabinol + 125 mg acetazolamide, IHL-42X: 5 mg dronabinol + 125 mg acetazolamide, IHL-42X: 7.5 mg dronabinol + 125 mg acetazolamide, IHL-42X: 2.5 mg dronabinol + 250 mg acetazolamide, IHL-42X: 5 mg dronabinol + 250 mg acetazolamide, IHL-42X: 7.5 mg dronabinol + 250 mg acetazolamide, IHL-42X: 2.5 mg dronabinol + 375 mg acetazolamide, IHL-42X: 5 mg dronabinol + 375 mg acetazolamide, IHL-42X: 7.5 mg dronabinol + 375 mg acetazolamide, Placebo: Negative control
Drug
Lead sponsor
Incannex Healthcare Ltd
Industry
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
14
States / cities
Chula Vista, California • Brandon, Florida • Jacksonville, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 2Phase 3 Interventional

RePOSA-Revealing the Efficacy of IHL-42X Use in Patients With OSA

NCT06146101
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
IHL-42X Low Dose, IHL-42X High Dose, Placebo, IHL-42X (Optimal Dose), Dronabinol, Acetazolamide
Drug
Lead sponsor
Incannex Healthcare Ltd
Industry
Eligibility
18 Years and older
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
20
States / cities
Chula Vista, California • Long Beach, California • Upland, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 1, 2026, 9:59 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Effects of Dual Cyclooxygenase-2 and Carbonic Anhydrase Inhibition

NCT00780325
View directory record Official record
Conditions
Healthy Volunteers
Interventions
CG100649 (2 mg), Celecoxib, Placebo capsules, Naproxen, Acetazolamide, CG100649 (8 mg)
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 60 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 5, 2014 · Synced Sep 1, 2026, 9:59 AM EDT
Active, not recruiting Phase 2 Interventional

Safety and Efficacy Study of Sivopixant, Acetazolamide and SASS-001 in Sleep Apnea

NCT06776432
View directory record Official record
Conditions
Sleep Apnea
Interventions
Sivopixant, Placebo, Acetazolamide, SASS-001
Drug
Lead sponsor
Shionogi
Industry
Eligibility
18 Years to 85 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
9
States / cities
La Jolla, California • Brandon, Florida • Miami, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 1, 2026, 9:59 AM EDT
Withdrawn Early Phase 1 Interventional Accepts healthy volunteers

A Noninvasive Arterial Input Estimation Method for O-15 PET and Integrated PET/MR Scanning

NCT03806751
View directory record Official record
Conditions
Validation of a New Noninvasive Method to Obtain the Arterial Input Function (AIF) Directly by PET Imaging
Interventions
[O-15]Water, Acetazolamide
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 60 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Feb 29, 2024 · Synced Sep 1, 2026, 9:59 AM EDT
Active, not recruiting Phase 1 Interventional

Phase I, Open-Label, Study of Tumor Infiltrating Lymphocytes Engineered With Membrane Bound IL15 Plus Acetazolamide in Adult Patients With Metastatic Melanoma

NCT05470283
View directory record Official record
Conditions
Tumor, Metastatic Melanoma, Melanoma
Interventions
OBX-115, Acetazolamide, Cyclophosphamide, Furosemide, Mesna, Fludarabine Phosphate
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Sep 1, 2026, 9:59 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Treatment of Orthostatic Intolerance

NCT00262470
View directory record Official record
Conditions
Tachycardia, Chronic Orthostatic Intolerance
Interventions
Acetazolamide, Atomoxetine, NO Drug, Clonidine, Entacapone, Entacapone & Propranolol, Atomoxetine & Propranolol, Indomethacin, Mecamylamine, Isosorbide Dinitrate, Melatonin, Midodrine, Modafinil, Octreotide, Placebo, Propranolol, Modafinil & Propranolol, Sertraline, IV Saline, Drinking Water, Breathing Device, memantine, Abdominal binder
Drug · Other · Dietary Supplement + 3 more
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 2 Interventional Results available

Combination Drug-Therapy for Patients With Untreated Obstructive Sleep Apnea

NCT04639193
View directory record Official record
Conditions
OSA, Obstructive Sleep Apnea
Interventions
Acetazolamide, Eszopiclone, Placebo, Venlafaxine
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
2
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 28, 2024 · Synced Sep 1, 2026, 9:59 AM EDT
Terminated Phase 3 Interventional Results available

Surgical Idiopathic Intracranial Hypertension Treatment Trial

NCT03501966
View directory record Official record
Conditions
Idiopathic Intracranial Hypertension
Interventions
Acetazolamide, Optic Nerve Sheath Fenestration, Ventriculoperitoneal CSF Shunting
Drug · Procedure
Lead sponsor
Jaeb Center for Health Research
Other
Eligibility
18 Years to 63 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
33
States / cities
Los Angeles, California • Palo Alto, California • Aurora, Colorado + 26 more
Source: ClinicalTrials.gov public record
Updated Jun 15, 2022 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Sickness Evaluation at Altitude With Acetazolamide at Relative Dosages

NCT03424226
View directory record Official record
Conditions
Acute Mountain Sickness
Interventions
Acetazolamide
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 75 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 19, 2018 · Synced Sep 1, 2026, 9:59 AM EDT
Not listed Early Phase 1 Interventional Accepts healthy volunteers

Carbonic Anhydrase Inhibitors and Carbonation: A Novel Approach to Reduce Soda Consumption

NCT06110078
View directory record Official record
Conditions
Obesity
Interventions
Acetazolamide
Drug
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 100 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 2 Interventional Results available

Histamine Glutamate Antagonism in Stroke

NCT02142712
View directory record Official record
Conditions
Acute Cerebrovascular Accident, Cerebral Edema
Interventions
Diphenhydramine, Pantoprazole, Famotidine, Dextromethorphan
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 14, 2015 · Synced Sep 1, 2026, 9:59 AM EDT
Recruiting Phase 1Phase 2 Interventional

Safety and Efficacy of OBX-115 in Advanced Solid Tumors

NCT06060613
View directory record Official record
Conditions
Tumor Skin, Metastatic Melanoma, Melanoma, Lung Cancer, Metastatic Lung Cancer, Non Small Cell Lung Cancer, Metastatic Non Small Cell Lung Cancer
Interventions
OBX-115
Biological
Lead sponsor
Obsidian Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
208 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
9
States / cities
Los Angeles, California • Stanford, California • Orlando, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Sep 1, 2026, 9:59 AM EDT
Recruiting Phase 2 Interventional

Patient-centered and Neurocognitive Outcomes With Acetazolamide for Sleep Apnea

NCT05804084
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
Acetazolamide, Placebo
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Sep 1, 2026, 9:59 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Acetazolamide on Subclinical High-Altitude Pulmonary Edema Detected by Lung Ultrasonography

NCT03490916
View directory record Official record
Conditions
High Altitude Pulmonary Edema
Interventions
Acetazolamide, Placebo
Drug
Lead sponsor
Vincent Kan
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 9, 2019 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Not applicable Interventional Results available

Predicting Successful Sleep Apnea Treatment With Acetazolamide in Heart Failure Patients

NCT01377987
View directory record Official record
Conditions
Heart Failures
Interventions
Acetazolamide, Placebo
Drug
Lead sponsor
David Andrew Wellman
Other
Eligibility
18 Years to 89 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 12, 2018 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 2 Interventional

Acetazolamide for Obstructive Sleep Apnea to Improve Heart Health

NCT05616260
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
Acetazolamide, Placebo, Continuous Positive Airway Pressure
Drug · Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 50 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Nov 24, 2025 · Synced Sep 1, 2026, 9:59 AM EDT
Recruiting Phase 1Phase 2 Interventional

Rescue Pharmacotherapy for OSA

NCT05293600
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
Placebo, Acetazolamide, Trazodone, Atomoxetine and eszopiclone
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years to 70 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Sep 1, 2026, 9:59 AM EDT