sildenafil citrate

[ sil-den-uh-fil ]
/ sɪlˈdɛn ə fɪl /
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noun Pharmacology.
a white crystalline powder, C22H30N6O4S, that temporarily normalizes erectile function of the penis by blocking an enzyme known to inhibit the production of a chemical that causes erections: used in the form of a pill to treat impotence.
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Medical definitions for sildenafil citrate

sildenafil citrate
[ sĭl-dĕnə-fĭl′ ]

A drug of the phosphodiesterase inhibitor class, used to treat erectile dysfunction by increasing the level of cyclic GMP, which increases blood flow to the erectile tissues.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.