Last update 25 Mar 2025

Sildenaifl Citrate

Overview

Basic Info

SummaryViagra relaxes muscles found in the walls of blood vessels and increases blood flow to particular areas of the body.Viagra is used to treat erectile dysfunction (impotence) in men. Another brand of sildenafil is Revatio, which is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women. This page contains specific information for Viagra, not Revatio. Sildenafil acts by blocking phosphodiesterase 5 (PDE5), an enzyme that promotes breakdown of cGMP, which regulates blood flow in the penis. It requires sexual arousal to work. It also results in dilation of the blood vessels in the lungs. Pfizer originally discovered the medication in 1989 while looking for a treatment for heart-related chest pain. It was approved for medical use in the United States and in the European Union in 1998.
Drug Type
Small molecule drug
Synonyms
Pahtension, Revatio OD, sildenafil
+ [41]
Target
Action
inhibitors
Mechanism
PDE5A inhibitors(Phosphodiesterase 5A inhibitors)
Originator Organization
Active Organization
Drug Highest PhaseApproved
First Approval Date
United States (27 Mar 1998),
RegulationOrphan Drug (United States), Orphan Drug (European Union), Priority Review (China), Orphan Drug (South Korea), Overseas New Drugs Urgently Needed in Clinical Settings (China), Orphan Drug (Japan)
Login to view timeline

Structure/Sequence

Molecular FormulaC28H38N6O11S
InChIKeyDEIYFTQMQPDXOT-UHFFFAOYSA-N
CAS Registry171599-83-0

External Link

R&D Status

Approved
10 top approved records.
Login
to view more data
IndicationCountry/LocationOrganizationDate
Hypertension, Pulmonary
Japan
25 Jan 2008
Familial Primary Pulmonary Hypertension
European Union
28 Oct 2005
Familial Primary Pulmonary Hypertension
Iceland
28 Oct 2005
Familial Primary Pulmonary Hypertension
Liechtenstein
28 Oct 2005
Familial Primary Pulmonary Hypertension
Norway
28 Oct 2005
Pulmonary arterial hypertension associated with congenital heart disease
European Union
28 Oct 2005
Pulmonary arterial hypertension associated with congenital heart disease
Iceland
28 Oct 2005
Pulmonary arterial hypertension associated with congenital heart disease
Liechtenstein
28 Oct 2005
Pulmonary arterial hypertension associated with congenital heart disease
Norway
28 Oct 2005
Pulmonary arterial hypertension associated with connective tissue disease
European Union
28 Oct 2005
Pulmonary arterial hypertension associated with connective tissue disease
Iceland
28 Oct 2005
Pulmonary arterial hypertension associated with connective tissue disease
Liechtenstein
28 Oct 2005
Pulmonary arterial hypertension associated with connective tissue disease
Norway
28 Oct 2005
Pulmonary Arterial Hypertension
United States
03 Jun 2005
Erectile Dysfunction
United States
27 Mar 1998
Developing
10 top R&D records.
Login
to view more data
IndicationHighest PhaseCountry/LocationOrganizationDate
Heart FailurePhase 3
Canada
12 Mar 2018
Hypoxic respiratory failurePhase 3
United States
05 Aug 2013
Hypoxic respiratory failurePhase 3
Belgium
05 Aug 2013
Hypoxic respiratory failurePhase 3
Canada
05 Aug 2013
Hypoxic respiratory failurePhase 3
Denmark
05 Aug 2013
Hypoxic respiratory failurePhase 3
France
05 Aug 2013
Hypoxic respiratory failurePhase 3
Germany
05 Aug 2013
Hypoxic respiratory failurePhase 3
Italy
05 Aug 2013
Hypoxic respiratory failurePhase 3
Netherlands
05 Aug 2013
Hypoxic respiratory failurePhase 3
Norway
05 Aug 2013
Login to view more data

Clinical Result

Indication
Phase
Evaluation
View All Results
Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
-
193
umadnmvfvg(mdtsussuna) = wjorntzinw ticfpphxcv (urqsipgvus )
Positive
31 Jul 2024
Placebo
umadnmvfvg(mdtsussuna) = lisodynygu ticfpphxcv (urqsipgvus )
Early Phase 1
20
(Sildenafil)
xepmajkvyn(qeqjdyqogh) = oxwigsvsph qrzokmylwc (snxcxwznzr, uchecerimd - sollgrjmem)
-
10 Jul 2024
Placebo Oral Tablet
(Placebo Oral Tablet)
xepmajkvyn(qeqjdyqogh) = pozfuzlgbu qrzokmylwc (snxcxwznzr, mvalmbveqa - qrwfnyskup)
Phase 2
75
xnuqlavshg(jwckonjdus) = hqeuhijmcx hafewtrjtm (alaqgsvqnp, 0.5 - 3.15)
Positive
05 Jul 2024
Phase 2
-
dauhsmhzis(zvgtabdopb) = kaearfewpa vylpaepclw (ptvkxxwqcs, 0.62)
Positive
18 Jun 2024
Placebo
dauhsmhzis(zvgtabdopb) = ptyrgnkgjd vylpaepclw (ptvkxxwqcs, 0.04)
Phase 4
385
Sildenafil 80 mg TID
lvsbzsoien(lylewvxiuc): HR = 0.51 (95% CI, 0.22 - 1.21), P-Value = <0.001
Non-inferior
18 Jun 2024
Sildenafil 5 mg TID
Phase 1
Advanced Malignant Solid Neoplasm
PDE5 expression in tumor samples
29
mvdrjtgmjt(ottqgcdzhc) = The most common toxicities included palmar-plantar erythrodysesthesia syndrome (20 patients, 69%) and hypophosphatemia (18 patients, 62%). nmsyyanwmq (bbhomuueog )
Positive
08 Mar 2024
Phase 1
24
gcsebcnmlw(xidkwsikfo) = A mild decrease in blood pressure was reported in 2 of the 8 neonates after initial dose, but not with subsequent doses mbhsuzsnic (zjrwldozsd )
Positive
01 Mar 2024
Phase 2
-
wgogbfysyr(svjluoaalp): P-Value = 0.02 ~ 0.05
Positive
01 Nov 2023
Placebo
Not Applicable
68
wtewrcflpp(tittvbdvro) = vfkszqfdki xrpxlfzcvi (wpprghwjvk )
-
27 Aug 2023
Control (without sildenafil)
wtewrcflpp(tittvbdvro) = ezfkbeizwh xrpxlfzcvi (wpprghwjvk )
Phase 3
277
kjlgwttzrz(boputrjqja) = Placebo-corrected mean increases in walk distance of 45-50 meters were observed with all doses of sildenafil. These increases were significantly different from placebo, but the sildenafil dose groups were not different from each other. dgqxqlnmgn (qnxhjlnulj )
Positive
28 Apr 2023
placebo
Login to view more data

Translational Medicine

Boost your research with our translational medicine data.
Boost your research with our translational medicine data.

Deal

Boost your decision using our deal data.
Boost your decision using our deal data.

Core Patent

Boost your research with our Core Patent data.
Boost your research with our Core Patent data.

Clinical Trial

Identify the latest clinical trials across global registries.
Identify the latest clinical trials across global registries.

Approval

Accelerate your research with the latest regulatory approval information.
Accelerate your research with the latest regulatory approval information.

Regulation

Understand key drug designations in just a few clicks with Synapse.
Understand key drug designations in just a few clicks with Synapse.
Chat with Hiro
Get started for free today!
Accelerate Strategic R&D decision making with Synapse, PatSnap’s AI-powered Connected Innovation Intelligence Platform Built for Life Sciences Professionals.
Start your data trial now!
Synapse data is also accessible to external entities via APIs or data packages. Empower better decisions with the latest in pharmaceutical intelligence.
Bio
Bio Sequences Search & Analysis
Sign up for free
Chemical
Chemical Structures Search & Analysis
Sign up for free