0300-9791333 0331-9791333 EtsyTeleShop.Com Avanafil (Stendra) is an expensive drug used to treat erection problems in men. This drug is less popular than comparable drugs. There are currently no generic alternatives to Stendra. It is not covered by most Medicare and insurance plans, but manufacturer and pharmacy coupons can help offset the cost. The lowest GoodRx price for the most common version of Stendra is around $378.48, 15% off the average retail price of $445.38. Compare OverviewTOP Avanafil is used to treat men who have erectile dysfunction (also called sexual impotence). Avanafil 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 this enzyme works. Erectile dysfunction is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection. When a ma...