This site is intended only for U. For sildenafil to work properly, you’ll need to be sexually excited. Adults 65 years of age and older—25 mg as a single dose no more than once a day, 1 hour before sexual intercourse. If you have certain health conditions or are taking certain medications, your doctor may tell you to take sildenafil less often. It can be dangerous to take sildenafil if you also take medicines called nitrates often given for chest pain.About sildenafil (Viagra) Sildenafil is a medicine used to treat erection problems (erectile dysfunction). Sildenafil is also sometimes used to treat pulmonary hypertension (high blood pressure in the blood vessels that supply the lungs). If you have erection problems sildenafil works by temporarily increasing blood flow to your penis when. There’s a Free, Low-Risk Alternative to Viagra, Study Shows. Regular exercise sessions can be as effective as popping Viagra pills when it comes to dealing with erectile . · Viagra; Descriptions. Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. These medicines prevent an enzyme called phosphodiesterase type-5 from working too quickly. The penis is one of the areas where .
