Viagra (sildenafil) is an oral drug used to treat erectile dysfunction (ED ... This not only counteracts Viagra's effects but can also worsen ED over the long term if alcohol is consumed in excess.

Olivier Sitbon and colleagues aimed to describe the long-term effects of first-line monotherapy with bosentan—followed by the addition of prostanoids or sildenafil, if needed—on PAH ...

Several observations from preclinical and short-term clinical studies support a role for sildenafil in the treatment of heart failure patients. The following discussion briefly considers each of ...

gmail.com Background Although sildenafil has been shown to be safe and effective in idiopathic pulmonary arterial hypertension (PAH) and PAH related to connective tissue disease, its effects in ...

Vardenafil typically starts working faster, around 15 to 30 minutes after ingestion, while sildenafil ... how long they last, ...