More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. The specific process for getting ED pills online depends on your chosen provider. As with sildenafil, a high-fat meal or alcohol keep the body from absorbing it as quickly. What Are the Symptoms of Erectile Dysfunction? However, others work on a cash-pay basis and don’t partner with insurance companies.Pregnancy. Birth control needs. Breastfeeding. For professionals. Drug Images. What is Viagra? Viagra is a brand-name prescription drug that’s approved to treat erectile . Get sildenafil for as low as $, which is 99% off the average retail price of $ for the most common version, by using a GoodRx coupon. Prices Medicare Drug Info Side . Viagra side effects. Get emergency medical help if you have signs of an allergic reaction to Viagra: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop .