Sildenafil
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Sildenafil (ing-gú: Sildenafil, Viagra; hàn-gú: 西地那非, 威而鋼) sī iōng Viagra tíng-tíng ê phín-pâi lâi siau-siū, sī tsı̽t-tsióng iōng-teh tī-liâu khí-pu̍t kong-lêng chiòng-gāi [en] hām Hì tōng-me̍h ko-ap [en] ê io̽h-bu̽t.[4][8] Bo̽k-tsiân koh bô-tshing-tshó Sildenafil m̄-tsai tuì tī-liâu lú-sìng sìng-kong-lîng ê tsiong-ài kám ū-hāu.[8] kháu-hok hi̍k-tsiá tsīng-me̽h tsù-siā [en].[8] İo̽h-hāu khai-sí tsok-iōng thong-siông teh 20 hun-tsing tsi-lāi, ē-tàng tshî-siok tòng-kàu 2 tiám-tsing kú.[8]
Quick Facts Clinical data, Pronunciation ...
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Pronunciation | /sɪlˈdɛnəfɪl/ sil-DEN-ə-fil |
Trade names | Viagra, Revatio, others |
AHFS/Drugs.com | Monograph |
MedlinePlus | a699015 |
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Routes of administration | By mouth (tablets), intravenous |
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Bioavailability | 41% (mean)[7] |
Protein binding | ~96% |
Metabolism | Liver: CYP3A4 (major route), CYP2C9 (minor route) |
Metabolites | N-desmethylsildenafil (~50% potency for PDE5) |
Onset of action | 20 minutes |
Elimination half-life | 3–4 hours |
Excretion | Feces (~80%), urine (~13%)[4] |
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ECHA InfoCard | 100.122.676 |
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Formula | C22H30N6O4S |
Molar mass | 474.58 g·mol−1 |
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