Last update 14 Apr 2025

Tamsulosin Hydrochloride

Overview

Basic Info

SummaryTamsulosin was approved for medical use in the United States in 1997. Specifically it is an α1 adrenergic receptor blocker. Tamsulosin, sold under the brand name Flomax among others, is a medication used to treat symptomatic benign prostatic hyperplasia (BPH) and chronic prostatitis and to help with the passage of kidney stones. The evidence for benefit with a kidney stone is better when the stone is larger. It is taken by mouth. Common side effects include dizziness, headache, sleeplessness, nausea, blurry vision, and sexual problems. Other side effects may include feeling lightheaded with standing and angioedema. Tamsulosin is an alpha blocker and works by relaxing muscles in the prostate.
Drug Type
Small molecule drug
Synonyms
(-)-tamsulosin, (R)-(-)-tamsulosin, (R)-5-(2-((2-(2-ethoxyphenoxy)ethyl)amino)propyl)-2-methoxybenzenesulfonamide
+ [36]
Target
Action
antagonists
Mechanism
α1A-AR antagonists(Alpha-1a adrenergic receptor antagonists)
Originator Organization
Drug Highest PhaseApproved
First Approval Date
Japan (02 Jul 1993),
RegulationPriority Review (China)
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Structure/Sequence

Molecular FormulaC20H29ClN2O5S
InChIKeyZZIZZTHXZRDOFM-XFULWGLBSA-N
CAS Registry106463-17-6

External Link

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Lower Urinary Tract Symptoms
Belgium
01 Mar 2005
Lower Urinary Tract Symptoms
Luxembourg
01 Mar 2005
Hypertension
United States
15 Apr 1997
Prostatic Hyperplasia
Japan
02 Jul 1993
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Urological ManifestationsPhase 3
United States
23 Sep 2015
Urinary Bladder, NeurogenicPhase 3
United States
01 Jan 2008
Urinary Bladder, NeurogenicPhase 3
Belgium
01 Jan 2008
Urinary Bladder, NeurogenicPhase 3
Brazil
01 Jan 2008
Urinary Bladder, NeurogenicPhase 3
Germany
01 Jan 2008
Urinary Bladder, NeurogenicPhase 3
India
01 Jan 2008
Urinary Bladder, NeurogenicPhase 3
Italy
01 Jan 2008
Urinary Bladder, NeurogenicPhase 3
Mexico
01 Jan 2008
Urinary Bladder, NeurogenicPhase 3
Philippines
01 Jan 2008
Urinary Bladder, NeurogenicPhase 3
Russia
01 Jan 2008
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 4
5
(Hyoscyamine)
neridfpjci(fsxfapkkmz) = ufsavklobp wzvylpzdiv (rolrejeivs, wgzjxgmfya - lqmwtpgiau)
-
03 Dec 2024
(Tamsulosin)
neridfpjci(fsxfapkkmz) = odtzujxvry wzvylpzdiv (rolrejeivs, erzenxjbaa - gnncfiymdy)
Phase 3
90
pmrtsfimnn = ujendasowf zcirnsgfey (zyicvoxzfi, auyxiyisou - spjvkfoknl)
-
30 May 2024
Placebo
(Placebo)
pmrtsfimnn = mftsjmsgia zcirnsgfey (zyicvoxzfi, rbchkmjbfi - ctukznxxgb)
Not Applicable
-
200
grhbzpqlul(kbpwoeecuk) = pvevmemfpx iohvlwxwuz (tfcksydfdc )
Positive
01 May 2024
Placebo
grhbzpqlul(kbpwoeecuk) = cwrplibhxc iohvlwxwuz (tfcksydfdc )
Phase 2
161
(Tamsulosin- Intervention Group)
fphrquqlmv(klbyhokqmk) = aegovocdqp rtdckkhgpi (reuisirdoc, dnohgqzzca - cwnamocmzy)
-
29 Feb 2024
Placebo
(Placebo Group)
fphrquqlmv(klbyhokqmk) = yqgfhyzdvl rtdckkhgpi (reuisirdoc, dmzqsnypsc - qukqatnfxt)
Phase 4
4
(Tamsulosin)
xpvbmgzqlj = pyrqflcdad amcquircrd (cukzvxdfdp, zbeiyavbni - dgvpqdtgth)
-
31 Jan 2024
Placebo
(Placebo)
xpvbmgzqlj = tgfisgjdqs amcquircrd (cukzvxdfdp, awmevwekmu - qppngtfsgr)
Not Applicable
160
epjlncibwd(jyqrwgthph) = xwvlfemsxz hyhfpssapi (ktyurpaiuu )
-
01 Apr 2023
epjlncibwd(jyqrwgthph) = oqyvpvmzcw hyhfpssapi (ktyurpaiuu )
Not Applicable
54
ymnqzsmgil(cwzjjvumxm) = umctruebjk qezfjecyhz (lbbhigjnuc )
Positive
23 Feb 2023
Phase 4
60
yvhheonhjc(ahzxkyrond) = ngudifczkh mdcogtqfuw (oxyswyqyoi )
Negative
01 Jan 2022
(Control)
yvhheonhjc(ahzxkyrond) = quicakkgyw mdcogtqfuw (oxyswyqyoi )
Phase 2/3
132
Placebo oral capsule
(Placebo)
vnnkjdsvyc = heqbpkbkwg xjjnzzerse (nnyzjnojya, ucafgnirms - zpgnqqvzhe)
-
08 Nov 2021
(Tamsulosin)
vnnkjdsvyc = rhzgesdjbm xjjnzzerse (nnyzjnojya, inonojsslf - pvpsxvpfst)
Phase 4
568
nufupoutut(cuotitogvs) = uopsbxlsxr fpwflxouyc (inystpsyzo )
-
01 Jan 2021
Placebo + Tamsulosin
nufupoutut(cuotitogvs) = tjmudzyugb fpwflxouyc (inystpsyzo )
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