"Sildenafil" Natural Recordings by Native Speakers
Sildenafil is a medication used to treat erectile dysfunction (ED) and pulmonary arterial hypertension (PAH). It belongs to the class of phosphodiesterase type 5 inhibitors. Sildenafil works by relaxing the blood vessels, allowing for increased blood flow to the penis, which helps to attain and maintain an erection. It is available under various brand names, including Viagra, Revatio, and others.