![]() |
|
---|---|
![]() |
|
Systematic (IUPAC) name | |
1-[4-ethoxy-3-(6,7-dihydro-1-methyl- 7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl) phenylsulfonyl]-4-methylpiperazine |
|
Clinical data | |
Trade names | Viagra |
AHFS/Drugs.com | monograph |
MedlinePlus | a699015 |
Licence data | EMA:Link, US FDA:link |
Pregnancy cat. | B (US) |
Legal status | ℞ Prescription only |
Routes | Oral |
Pharmacokinetic data | |
Bioavailability | 40% |
Metabolism | Hepatic (mostly CYP3A4, also CYP2C9) |
Half-life | 3 to 4 hours |
Excretion | Fecal (80%) and renal (around 13%) |
KamagraFree