Wechselwirkungen · Vizarsin
Vizarsin 25 mg film-coated tablets Vizarsin 50 mg film-coated tablets Vizarsin 100 mg film-coated tablets · Abschnitt 4.5 · PDF-Seite 5
HOS-210869 · Präparat HOS-154603
Co-administration of the HIV protease inhibitor ritonavir, which is a highly potent P450 inhibitor, at steady state (500 mg twice daily) with sildenafil (100 mg single dose) resulted in a 300% (4-fold) increase in sildenafil Cmax and a 1,000% (11-fold) increase in sildenafil plasma AUC. At 24 hours, the plasma levels of sildenafil were still approximately 200 ng/ml, compared to approximately 5 ng/ml when sildenafil was administered alone. This is consistent with ritonavir’s marked effects on a broad range of P450 substrates. Sildenafil had no effect on ritonavir pharmacokinetics. Based on these pharmacokinetic results co-administration of sildenafil with ritonavir is not advised (see section 4.4) and in any event the maximum dose of sildenafil should under no circumstances exceed 25 mg within 48 hours.
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RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): protease (HOS-085623) ritonavir (HOS-084521)
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Version 2023-02-24T16:29:00Z · SHA-256 2f808d91fd284718f9fd3477080213020dbb8a472917304bcbc8075d93a4c6f6 · Passage 606bba81cac56301d95ec128b47f2196dfefc339c21eedadf8c746bad89499b3 · Zeichen 753–1566 im Abschnitt