Step-by-step synthesis of Viagra

The molecular structure of sildenafil is similar to that of cGMP and acts as a competitive binding agent of PDE5 in the corpus cavernosum, resulting in more cGMP and better erections.

Synthesis Of Viagra Mechanism | OnlineStoreUSA

Men aged between 30 and 65 would be eligible to buy four tablets after a consultation with a pharmacist.[5] Pfizer's worldwide patents on sildenafil citrate will expire in 2011–2013.


Synthesis Of Viagra Mechanism - Online Sale

Because PDE-5 is primarily distributed within the arterial wall smooth muscle of the lungs and penis, sildenafil acts selectively in both these areas without inducing vasodilation in other areas of the body.