비아그라에 대한 새로운 단계별 지도

Sildenafil is excreted as metabolites predominantly from the feces (about 80% of administered oral dose) and to a lesser extent during the urine (all over 13% from the administered oral dose). If taken which has a substantial-fat food, absorption is diminished; enough time taken to achieve the most plasma concentration improves by close to one hour