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sildenafil citrate
The citrate salt of a pyrazolopyrimidinone derivative structurally related to zaprinast. Sildenafil selectively inhibits cyclic guanosine monophosphate (cGMP)-specific type 5 phosphodiesterase, resulting in vasodilation in the corpus cavernosum of the penis and penile erection. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
| US brand name: | | Viagra | |
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