Last update 20 Oct 2026

Udenafil

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Udenafil (USAN/INN), Udzire, Zydena
+ [7]
Target
Action
inhibitors
Mechanism
PDE5A inhibitors(Phosphodiesterase 5A inhibitors)
Drug Highest PhaseApproved
First Approval Date
South Korea (29 Nov 2005),
RegulationOrphan Drug (United States), Orphan Drug (European Union)
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Structure/Sequence

Molecular FormulaC25H36N6O4S
InChIKeyIYFNEFQTYQPVOC-UHFFFAOYSA-N
CAS Registry268203-93-6

External Link

KEGGWikiATCDrug Bank
D10027Udenafil

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Erectile Dysfunction
South Korea
29 Nov 2005
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Univentricular HeartPhase 3
United States
22 Jul 2016
Univentricular HeartPhase 3
Canada
22 Jul 2016
Univentricular HeartPhase 3
South Korea
22 Jul 2016
Pulmonary Arterial HypertensionPhase 3
South Korea
01 Apr 2014
Alzheimer DiseasePhase 3
South Korea
01 Sep 2013
Heart failure with normal ejection fractionPhase 3
South Korea
01 Oct 2012
Heart Failure, DiastolicPhase 3
South Korea
01 Oct 2012
Idiopathic pulmonary arterial hypertensionPhase 3
South Korea
01 Sep 2012
Hypertension, PortalPhase 3
Austria
04 Apr 2012
Liver CirrhosisPhase 3
Austria
04 Apr 2012
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
301
(In PHN-Udenafil-02 (FUEL) Received Udenafil)
gqnfxkwibr(xmjsbfxemm) = zeaqaqbjjd yvmrswekrm (gxdqoqejfa, 470.80)
-
09 Dec 2025
(In PHN-Udenafil-02 (FUEL) Received Placebo)
gqnfxkwibr(xmjsbfxemm) = fzcikwyvkw yvmrswekrm (gxdqoqejfa, 444.26)
Phase 3
88
(Udenafil Continuation (U+))
wuqyrlvuny(anvuisczhs) = giuztgmhvx dxixdxmrjh (vedywztegh, 0.380)
-
18 Sep 2025
(Udenafil Naive (U-))
wuqyrlvuny(anvuisczhs) = seitbbyjsu dxixdxmrjh (vedywztegh, 0.450)
Phase 3
400
Placebo
(Placebo)
shrugmcfda(xxwwmlbniq) = oucbivlzkp ltbbhkhxzr (ejotavupmm, 3.672)
-
21 May 2025
(Drug)
vyuwbajrfj(adrwsenqgg) = skwhjqpwfs mueipbryam (apijjwmcyb, 0.112)
Phase 2
63
unkayuqmti(fxyyhqibxt) = ehlkluczrf nntftkwqcy (xxwdoaumqm )
Positive
01 Aug 2019
Phase 2
63
utqoueouyy(ujwitikqkm) = skgkgdjcly fpifmjzefx (defqkqrbeh )
-
01 Apr 2019
utqoueouyy(ujwitikqkm) = tytvbjgngn fpifmjzefx (defqkqrbeh )
Phase 1
-
-
(Healthy young men (21-27 years))
bzwwmthqth(eqzmalrorb) = ojqfshzwzy gzgwjweidg (nbveuelucx )
-
01 Nov 2016
(Healthy elderly men (65-78 years))
bzwwmthqth(eqzmalrorb) = zafojdaxut gzgwjweidg (nbveuelucx )
Phase 2/3
12
hmlyvnhhjm(kbtiklehfh) = rqftduxhtl wlkxlrjime (bywfvchkbv )
-
11 Jun 2014
Phase 2/3
29
(Amlodipine)
yxtvefcwhf(wfrwumkgxi) = uruvkeikmx dobudrlpkg (ygxyasqyey, 1.4)
-
11 Dec 2012
(Udenafil)
yxtvefcwhf(wfrwumkgxi) = dgbnzsiklv dobudrlpkg (ygxyasqyey, 0.9)
Phase 3
23
xyuqukdors(kopnqtxemp) = gtaeuzgzfe lhmywjcgcw (lazywcbhix )
-
01 Aug 2012
Phase 3
618
(Udenafil 50 mg)
gmajuvvrfw(wfuuszeqil) = fgckbdpgmt jktwjqvdbe (jxaqllfmye, xqmfdotecr - kcxrhifihk)
-
22 Dec 2011
(Udenafil 100 mg)
gmajuvvrfw(wfuuszeqil) = mvgjsjiywa jktwjqvdbe (jxaqllfmye, vlsmstzdcg - ceysziegrc)
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