There is a problem with information submitted for this request. To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and site usage information with other information we have about you. Remove the cap by pushing it down and twisting it counter-clockwise. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. Sildenafil is also used in both men and women to treat the symptoms of pulmonary arterial hypertension. Children 1 year of age and older weighing 45 kilograms kg or more—20 mg 3 times a day. · US Brand Name Revatio Viagra Descriptions Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a . Generic: Sildenafil. Form: oral tablet; Strengths: 25 mg, 50 mg, mg; Brand: Viagra. Form: oral tablet; Strengths: 25 mg, 50 mg, mg; Adult dosage (ages . Sildenafil (Liqrev, Revatio) is used to improve the ability to exercise in adults (Liqrev, Revatio) and children 1 year of age and older (Revatio) with pulmonary arterial .