However, the dose is usually not more than 80 mg 3 times a day. If you take too much sildenafil or take it together with these medicines, the chance for side effects will be higher. Use the oral syringe provided with your medication to measure and take your dose. They’re often the first line of treatment for trouble getting or keeping an erection, called erectile dysfunction ED. These are commonly prescribed for an enlarged prostate or male pattern baldness. As with sildenafil, a high-fat meal or alcohol keep the body from absorbing it as quickly.AdSay Goodbye to Performance Anxiety and Hello to Improved Sexual Stamina! Take Charge of Your Sexual Health with Our Top-Rated Male Enhancement Products!Honest & Unbiased Reviews · Over 20 Years Online · Over Products Tested.  · For treatment of erectile dysfunction: 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. Alternatively, the medicine may be taken 30 minutes to 4 hours before sexual intercourse. Your doctor may adjust your dose if needed. Drug Images What is Viagra? If you have erectile dysfunction (ED), your doctor may recommend that you take Viagra. It’s a prescription drug that’s used in adult males* with ED. With ED, you.