Last update 30 Jul 2026

Oxybutynin Chloride

Overview

Basic Info

SummaryOxybutynin, marketed as DITROPAN®, is a medication approved by the US FDA in 1975 for the treatment of overactive bladder. Developed by Janssen, the drug works as an antagonist of acetylcholine at postganglionic muscarinic receptors, causing relaxation of the smooth muscle in the bladder. It is a racemic mixture of R- and S-isomers, with the antimuscarinic activity mainly residing in the Risomer. Additionally, the active metabolite, N-desethyloxybutynin, has similar pharmacological effects on human detrusor muscle as oxybutynin, as observed in in vitro studies. Overall, Oxybutynin Chloride offers relief to those experiencing urinary urgency, frequency, and incontinence.
Drug Type
Small molecule drug
Synonyms
Aroxybutynin, oxybutynin, Oxybutynin (USAN/INN)
+ [44]
Target
Action
antagonists
Mechanism
mAChRs antagonists(Muscarinic acetylcholine receptor antagonists)
Originator Organization
Drug Highest PhaseApproved
First Approval Date
United States (16 Jul 1975),
Regulation-
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Structure/Sequence

Molecular FormulaC22H32ClNO3
InChIKeySWIJYDAEGSIQPZ-UHFFFAOYSA-N
CAS Registry1508-65-2

External Link

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Hyperhidrosis
Australia
12 Sep 2025
Hyperhidrosis Palmaris Et Plantaris
Japan
27 Mar 2013
Pollakisuria
Japan
29 Mar 1988
Urinary Incontinence
Japan
29 Mar 1988
Urinary urgency
Japan
29 Mar 1988
Spinal Dysraphism
United States
29 Nov 1979
Urinary Incontinence, Urge
United States
29 Nov 1979
Urinary Bladder, Overactive
United States
16 Jul 1975
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Lower Urinary Tract SymptomsPhase 3-01 May 2004
Urination DisordersPhase 3-01 May 2004
Urinary Incontinence, StressPhase 3-01 Dec 1995
Diabetic peripheral neuropathyPreclinical
United States
01 Jun 2024
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
26
cjxhyqiuox(anyxclyqsf) = sxmvepbmqx uwxhqwcggj (fzoxacrzug, 7.11)
-
01 Apr 2026
Usual Urogynecologic care
(Usual Care)
cjxhyqiuox(anyxclyqsf) = vipwepaybg uwxhqwcggj (fzoxacrzug, 7.34)
Phase 2
88
zhiuxpehul(dbmwnyhteb) = figkbffdon zsrsiklxhy (qbwnomdmwj )
Positive
26 Jan 2026
zhiuxpehul(dbmwnyhteb) = ebeawpjuks zsrsiklxhy (qbwnomdmwj )
Phase 2
22
(High Dose Ato-oxy)
vwthqfzfti(erltkglwgk) = pkiudoskon jrfylgcwzs (dctmkoyebm, 2.74)
-
19 Aug 2025
vwthqfzfti(erltkglwgk) = pcrvdhkmjv jrfylgcwzs (dctmkoyebm, 3.06)
Phase 2
24
OC
(OC Oral Solution Treatment B)
cwisntugyq(zrockszkst) = gzhlftaeup wyqszxtqli (ejtolgnkmb, 0.165)
-
10 Apr 2023
OC
(OC Oral Solution Treatment C)
cwisntugyq(zrockszkst) = ajlsgrnwdh wyqszxtqli (ejtolgnkmb, 0.147)
Phase 4
20
kxxhbmapca(oeantzbwxx) = cumwqyezwa pldrmjfalr (odhklbqwkx, uubxwoofrx - icjlbhjmpd)
-
03 Oct 2022
Phase 2
30
jypsjbdyix(aqrqwzmyrw) = rmphvkzoop thmmlfkbqy (hbearxhuov )
Positive
11 Mar 2022
jypsjbdyix(aqrqwzmyrw) = debzqbxgiq thmmlfkbqy (hbearxhuov )
Phase 3
855
nrmglbahux = jhxxxhyhgv cqzbaqjpad (wgggdukzyq, fvbgilepoe - gfypyvhfnq)
-
20 Oct 2020
Phase 3
150
(High-dose Oxybutynin Chloride Group)
tiqjdzlusk(kamisrhbkf) = zbhsccfohc ugpfaazpwb (vdhednbaso, 15.6)
-
03 Jun 2019
(Low-dose Oxybutynin Chloride Group)
tiqjdzlusk(kamisrhbkf) = aphzpngndt ugpfaazpwb (vdhednbaso, 7.7)
Not Applicable
10
jolmtcgtoh = paqgvjcrbb vxmfkxqvij (nurkoikaih, hxlhozbqza - ildxbvqtat)
-
19 Jun 2018
Phase 4
55
Posterior Tibial Nerve Stimulation+Oxybutynin extended release
(Oxybutynin Plus PTNS)
mjlfdaefmo(wlmlsunjgi) = gwyndaabra zfgchyxvii (wijwkkggxu, lagppfvybs - abbndyryri)
-
23 Jan 2018
Posterior Tibial Nerve Stimulation
(Placebo Plus PTNS)
mjlfdaefmo(wlmlsunjgi) = aghjcxhtng zfgchyxvii (wijwkkggxu, rupkonqixl - bwcoixfhbl)
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