Please expect up to 4 to 6 weeks for reimbursement. Viagra contains the active ingredient Sildenafil Citrate. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Viagra is always taken as needed, usually an hour before having sex. This leads to more blood flow to the penis, leading to stronger erections. What is the difference between Viagra and Sildenafil?Sildenafil Erectile Dysfunction Treatment. 22, people reviewed this product. Generic Sildenafil is medically equivalent to Viagra but is available at a lower price. Price Checker. Strength. Quantity. ? per tablet Lowest . Price and coupons for 1 Tablet of Viagra mg found near We’re sorry we couldn’t find any coupons in your area. Please try another search or try again later. Have questions? Savings are. Brand names for sildenafil include Viagra, Revatio, and Liqrev. The cost for sildenafil oral tablet mg is around $10 for a supply of 2 tablets, depending on the pharmacy you visit. Quoted prices are for cash-paying customers and are not valid with insurance plans.