Viagra is so popular that its name has become synonymous with ED treatment — just like Ziploc has with plastic bags. But the active ingredient in Viagra is sildenafil. Pfizer Pharmaceuticals patented ...

Nitric oxide (NO) is a key mediator of neural and haemodynamic effects. NO diffuses into vascular smooth muscle cells, stimulating the production of cGMP and leading to vasodilatation. The effects of ...

Sildenafil, which is also called sildenafil citrate, comes as an oral tablet. The drug also comes as an oral liquid suspension and IV infusion. However, this article does not cover these forms. It ...

Oct. 28, 2004 (Seattle) — Sildenafil citrate produced significant improvement in six-minute walk test results of patients with pulmonary arterial hypertension (PAH), according to a randomized, placebo ...

Purpose: The stability of sildenafil citrate 2.5 mg/mL in two extemporaneously prepared oral suspensions stored at 4 and 25 ºC was studied. Methods: Thirty 25-mg tablets of sildenafil citrate were ...