If your dose is different, do not change it unless your doctor tells you to do so. When choosing one, tell your doctor or other health care professional what your preferences are, such as cost, ease of use, how long the drug’s effects last and side effects. Sexual activity may be a strain on your heart, especially if you have heart disease. Children younger than 1 year of age—Use and dose must be determined by your doctor. Take sildenafil up to 4 hours before you want to have sex. Brand names Why is this medication prescribed? Do not keep outdated medicine or medicine no longer needed.97% average discount. Depression. 86% average discount. Hypertension. 74% average discount. Urinary Tract Infection. 67% average discount. Based on the average user . Pfizer, the manufacturer of Viagra, offers a program that can help lower the cost of Viagra. For more information and to find out if you’re eligible for support, call or visit the. AdSearch Free Coupons for your Prescription. Risk Free, No Sign-Up. Instantly Download Now! Find the Lowest Price for Your Local Pharmacy. Compare Multiple Offers test1.rue: Bonus savings, Discount cards, Browse prescriptions, Drug classe.