As with sildenafil, a high-fat meal or alcohol keep the body from absorbing it as quickly. This is a type of high blood pressure that occurs between the heart and the lungs. Avanafil Stendra. If you are taking sildenafil to treat erectile dysfunction, you should know that it does not cure erectile dysfunction or increase sexual desire. If you are a Mayo Clinic patient, this could include protected health information. They include dutasteride Avodart, Jalyn and finasteride Propecia, Proscar. · US Brand Name Revatio Viagra Descriptions Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a . 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 .  · For oral dosage form (tablets): Adults up to 65 years of age—50 milligrams (mg) as a single dose no more than once a day, 1 hour before sexual intercourse. .