The most popular medication for the treatment of erectile dysfunction is sildenafil, also known as Viagra. It also addresses other issues with male sexual function. The salt version of the medication is called sildenafil citrate. In order to assist a man to maintain his erection and improve sexual activity, it is typically utilized to boost blood flow to the penis. Users of this medication are not protected against STDs by it ( HIV, hepatitis B, gonorrhea, syphilis). Do not exceed one daily serving. A high-calorie diet may hinder the medication's effects. Pulmonary arterial hypertension is the other ailment that the drug is intended to treat.