Sildenafil: Understanding Its Benefits and Applications What is Sildenafil? Sildenafil, commonly known by its brand name Viagra, is a medication used primarily to treat erectile dysfunction (ED) and pulmonary arterial hypertension (PAH). As a phosphodiesterase type 5 (PDE5) inhibitor, Sildenafil works by increasing blood flow to certain areas of the body. It was initially developed […]