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139755-83-2 Usage


An orally active selective type 5 cGMP phosphodiesterase inhibitor.


ChEBI: A pyrazolo[4,3-d]pyrimidin-7-one having a methyl substituent at the 1-position, a propyl substituent at the 3-position and a 2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl group at the 5-position.

Chemical Properties

White Solid

Brand name

Viagra (Pfizer).



Indications and Usage

Sildenafil Citrate is an oral drug used to treat male erectile dysfunction and is a 5-phosphodiesterase inhibitor developed by the American Pfizer Pharmaceuticals to originally treat cardiovascular disease that was later discovered to improve patients’ sex lives. Sildenafil Citrate treats erectile dysfunction and was the first clinical oral drug used to specifically target male erectile dysfunction.

Adverse Reactions

Common adverse reactions include headache, dizziness, facial flushing, indigestion, nasal congestion, and sight abnormalities, which may be expressed as difficulty differentiation blue/green colors, light sensitivity, or blurry vision. More severe adverse effects include decreased supine blood pressure and decreased cardiac output. Additionally, clinical research shows that engaging in sexual activity after taking Sildenafil Citrate increases the risk of heart abnormalities, including angina pectoris, dizziness, nausea, and other symptoms, and it may also cause sudden cardiac death.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017


1.1 GHS Product identifier

Product name sildenafil

1.2 Other means of identification

Product number -
Other names SIDANAFIL

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:139755-83-2 SDS

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