Viagra (sildenafil citrate) is the first approved non-surgical treatment for erectile dysfunction (ED) that does not have to be either injected or inserted directly into the penis to achieve and maintain an erection.
The oral medication was approved by the US Food and Drug Administration (FDA) for prescription sale in 1998.
Viagra (sildenafil) belongs to a group of medicines that delay the enzymes called phosphodiesterase from working too quickly. By delaying the action of phosphodiesterase, blood remains in the penis longer, maintaining an erection for a longer period of time.Buy generic viagra pills.
Protease Inhibitors (Reyataz, Crixivan, Invirase, Norvir, Viracept,Fortovase, Agenerase, Lopinavir) increase the amount of Viagra in your blood and prolongs the action of Viagra. Men on Protease Inhibitors should start with a dose of 25mg with a maximum of 50mg.Buy generic viagra pills