Sildenafil citrate, sold as Viagra, Revatio and under various other trade names, is a drug ud to treat erectile dysfunction and pulmonary arterial hypertension (PAH). It was originally developed by
Sildenafil citrate, sold as Viagra, Revatio and under various other trade names, is a drug ud to treat erectile dysfunction and pulmonary arterial hypertension (PAH). It was originally developed by