[A carboline-based compound with vasodilatory properties. Tadalafil selectively inhibits the cyclic guanosine monophosphate (cGMP)-specific type 5 phosphodiesterase- (PDE-5)-mediated degradation of cGMP, which is found in the smooth muscle of the corpus cavernosa and corpus spongiosum of the penis. Inhibition of cGMP degradation by tadalafil results in prolonged muscle relaxation, vasodilation, and blood engorgement of the corpus cavernosa, thereby prolonged penile erection. ( NCI )]
UMLS (NCI) C1176316TADALAFIL
TADALAFIL UNIDENTIFIED
- Organic Chemical
- Pharmacologic Substance