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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: tamsulosin hydrochloride Clear all
Completed Phase 2 Interventional Results available

An 8-week, Open-label, Uncontrolled Study of Tamsulosin 0.4mg in Men With Bothersome Urinary Symptoms

NCT01726270
View directory record Official record
Conditions
Lower Urinary Tract Symptoms
Interventions
tamsulosin
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years to 100 Years · Male only
Enrollment
689 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
18
States / cities
Hoover, Alabama • Mesa, Arizona • Encino, California + 15 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2020 · Synced Sep 25, 2026, 4:57 PM EDT
Terminated Phase 4 Interventional Results available

Post-Operative Urinary Retention (POUR) in Thoracic Surgery Patients Receiving Prophylactic Tamsulosin

NCT04994431
View directory record Official record
Conditions
Thoracic Diseases, Urinary Retention
Interventions
Tamsulosin Hydrochloride
Drug
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
60 Years and older · Male only
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 6, 2024 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study To Compare 3 Different Formulations Of Tamsulosin At Steady State.

NCT00609596
View directory record Official record
Conditions
Prostatic Hyperplasia
Interventions
GI198745
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 3, 2017 · Synced Sep 25, 2026, 4:57 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Impact of Tamsulosin on Post-Operative Urinary Retention Following Pelvic Reconstructive Surgery

NCT04597372
View directory record Official record
Conditions
Urinary Retention Postoperative
Interventions
Tamsulosin, Placebo
Drug
Lead sponsor
Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)
Other
Eligibility
18 Years and older · Female only
Enrollment
154 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Sep 25, 2026, 4:57 PM EDT
Terminated Not applicable Interventional Results available

Prophylactic Tamsulosin Use for Prevention of Post-Operative Urinary Retention

NCT02684344
View directory record Official record
Conditions
Post-Operative Urinary Retention
Interventions
Tamsulosin, Education
Drug · Other
Lead sponsor
University of Rochester
Other
Eligibility
40 Years and older · Male only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 22, 2019 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Hemodynamic Study of Avanafil and Two α-Adrenergic Blockers,Doxazosin and Tamsulosin

NCT01100021
View directory record Official record
Conditions
Erectile Dysfunction
Interventions
Tamsulosin and avanafil, Doxazosin and avanafil
Drug
Lead sponsor
VIVUS LLC
Industry
Eligibility
40 Years to 65 Years · Male only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 6, 2011 · Synced Sep 25, 2026, 4:57 PM EDT
Active, not recruiting Phase 1 Interventional

A Pilot Study of Ultra-High-Dose Hypofractionated or Single-Dose Radiotherapy for Intermediate Risk Prostate Cancer

NCT04147806
View directory record Official record
Conditions
Prostate Cancer
Interventions
IGRT 45 Gy in 5 fractions of 9 Gy, IGRT 24 Gy single dose, Dexamethasone, Tamsulosin
Radiation · Drug
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
50 Years and older · Male only
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Comparative Bioavailability of Two Fixed Dose Combination (FDC) Formulations of Dutasteride and Tamsulosin Hydrochloride Relative to Co-administration of Dutasteride With Tamsulosin Hydrochloride in Healthy Male Subjects Under Fed and Fasted States

NCT02184585
View directory record Official record
Conditions
Prostatic Hyperplasia
Interventions
Treatment sequence A, Treatment sequence B, Treatment sequence C
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 18, 2018 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Combined Behavioral and Drug Treatment of Overactive Bladder in Men

NCT01175382
View directory record Official record
Conditions
Overactive Bladder, Lower Urinary Tract Symptoms
Interventions
Behavioral training, Tolterodine + tamsulosin, Combined Behavioral + Drug Therapy
Behavioral · Drug · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
40 Years and older · Male only
Enrollment
204 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
3
States / cities
Birmingham, Alabama • Atlanta, Georgia • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated May 24, 2017 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Effect of Preoperative Tamsulosin on Postoperative Urinary Retention

NCT05753670
View directory record Official record
Conditions
Postoperative Retention of Urine
Interventions
Tamsulosin, Placebo
Drug
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
179 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 27, 2025 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study To Compare Giving AVODART And FLOMAX Together Or In A Combination Capsule In The Fed And Fasted State

NCT00537654
View directory record Official record
Conditions
Prostatic Hyperplasia
Interventions
Treatment sequence A, Treatment sequence B, Treatment sequence C, Treatment sequence D
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
2
States / cities
Evansville, Indiana • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 16, 2017 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 2 Interventional Results available

PK/PD, Long-term Safety and Efficacy of Tamsulosin Treatment in Children With Neurogenic Bladder

NCT00340704
View directory record Official record
Conditions
Bladder, Neurogenic
Interventions
tamsulosin hydrochloride
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
2 Years to 16 Years
Enrollment
143 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
19
States / cities
Birmingham, Alabama • Los Angeles, California • Jacksonville, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2016 · Synced Sep 25, 2026, 4:57 PM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Post-operative Urinary Retention (POUR) Following Thoracic Surgery

NCT03609580
View directory record Official record
Conditions
Urinary Retention
Interventions
Tamsulosin - 1 week, Tamsulosin - 3 days
Drug
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
50 Years and older · Male only
Enrollment
127 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2027
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 25, 2026, 4:57 PM EDT
Terminated Phase 3 Interventional Results available

Trial of Prophylactic Tamsulosin for Postoperative Urinary Retention in Primary Total Hip and Knee Arthroplasty Patients

NCT02518971
View directory record Official record
Conditions
Postoperative Urinary Retention
Interventions
Tamsulosin, Placebo
Drug
Lead sponsor
University of Michigan
Other
Eligibility
35 Years and older · Male only
Enrollment
176 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 11, 2019 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 2 Interventional Results available

Effectiveness of onaBoNT-A vs Oral Tamsulosin in Men With BPH and LUTS

NCT01589263
View directory record Official record
Conditions
Benign Prostatic Hyperplasia, Lower Urinary Track Symptoms
Interventions
onaBoNT-A + placebo, Tamsulosin + placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
50 Years and older · Male only
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 4, 2021 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 3 Interventional Results available

Benign Prostatic Hyperplasia Trial With Dutasteride And Tamsulosin Combination Treatment

NCT00090103
View directory record Official record
Conditions
Prostatic Hyperplasia
Interventions
dutasteride 0.5mg once daily for 4 years, tamsulosin 0.4mg once daily for 4 years
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
50 Years and older · Male only
Enrollment
4,844 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
113
States / cities
Birmingham, Alabama • Columbiana, Alabama • Hoover, Alabama + 98 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2017 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 4 Interventional Results available

Tamsulosin for Urolithiasis in the Emergency Dept

NCT00382265
View directory record Official record
Conditions
Ureterolithiases
Interventions
tamsulosin, Placebo
Drug · Other
Lead sponsor
Andrew Meltzer
Other
Eligibility
18 Years and older
Enrollment
512 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2017
U.S. locations
4
States / cities
Birmingham, Alabama • Washington D.C., District of Columbia • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2018 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 1 Interventional

Treatment of Supine Hypertension in Autonomic Failure

NCT00223717
View directory record Official record
Conditions
Hypertension
Interventions
Clonidine, Nitroglycerin transdermal, Dipyridamole/ Aspirin (Aggrenox), Desmopressin (DDAVP), Sildenafil, Nifedipine, Hydralazine, Hydrochlorothiazide, Placebo, Bosentan, Diltiazem, Eplerenone, guanfacine, L-arginine, captopril, carbidopa, losartan, metoprolol tartrate, nebivolol hydrochloride, prazosin hydrochloride, tamsulosin hydrochloride, Head-up tilt., aliskiren, Local heat stress
Drug · Dietary Supplement · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 12, 2017 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Not applicable Interventional

The Efficacy of Tamsulosin in the Treatment of Ureteral Stones in Emergency Department Patients

NCT00600405
View directory record Official record
Conditions
Nephrolithiasis, Ureteral Calculi
Interventions
tamsulosin, Standard therapy with ibuprofen and oxycodone.
Drug
Lead sponsor
MaineHealth
Other
Eligibility
18 Years and older
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Portland, Maine
Source: ClinicalTrials.gov public record
Updated Jan 24, 2008 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Behavior and Exercise Versus Drug Treatment in Men With Nocturia (BEDTiMe)

NCT00824200
View directory record Official record
Conditions
Nocturia
Interventions
Behavioral, tamsulosin (alpha-adrenergic antagonist medication), placebo, placebo
Behavioral · Drug
Lead sponsor
Atlanta VA Medical Center
Federal
Eligibility
40 Years and older · Male only
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
2
States / cities
Birmingham, Alabama • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 15, 2021 · Synced Sep 25, 2026, 4:57 PM EDT
Terminated Phase 4 Interventional Results available

Use of Hyoscyamine Versus Tamsulosin for Management of Ureteral Stent Irritation

NCT03750656
View directory record Official record
Conditions
Lower Urinary Tract Symptoms
Interventions
Hyoscyamine, Tamsulosin
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 2, 2024 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 4 Interventional

A Study to Evaluate Solifenacin Succinate in Combination With Tamsulosin for the Treatment of Residual Overactive Bladder Symptoms (OAB) in Men.

NCT00333112
View directory record Official record
Conditions
Urinary Incontinence
Interventions
solifenacin succinate, tamsulosin, placebo
Drug
Lead sponsor
Astellas Pharma Inc
Industry
Eligibility
45 Years and older · Male only
Enrollment
398 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
74
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tuscon, Arizona + 67 more
Source: ClinicalTrials.gov public record
Updated Sep 17, 2014 · Synced Sep 25, 2026, 4:57 PM EDT
Recruiting Early Phase 1 Interventional

Post Operative Urinary Retention (POUR) Following Thoracic Oncological Surgery

NCT05657990
View directory record Official record
Conditions
Urinary Retention
Interventions
Tamsulosin
Drug
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
55 Years and older · Male only
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
4
States / cities
Brick, New Jersey • Manahawkin, New Jersey • Neptune City, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 3 Interventional Results available

Prevention of Post-operative Urinary Retention

NCT02486653
View directory record Official record
Conditions
Urinary Retention, Urinary Tract Infections
Interventions
Tamsulosin, Placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 24, 2019 · Synced Sep 25, 2026, 4:57 PM EDT