비아그라는 무엇을 의미합니까?

Sildenafil is excreted as metabolites predominantly within the feces (about eighty% of administered oral dose) also to a lesser extent while in the urine (close to 13% from the administered oral dose). If taken having a large-Body fat meal, absorption is reduced; the time taken to achieve the most plasma concentration will increase by about 1 hour,