This allows the smooth muscles in the penis to relax and fill with blood. Other uses for this medicine This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. However, others work on a cash-pay basis and don’t partner with insurance companies. A phone or video consultation is sometimes required for legal purposes. This information is reviewed by a licensed practitioner who will assess your eligibility for the medication.Erectile dysfunction in older men. Erections mainly involve the blood vessels. And the most common causes of ED in older men are conditions that block blood flow to the penis. These include. Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud’s phenomenon. [9] It is unclear if it is effective for treating sexual dysfunction in females. [8]. Viagra Coupons, Prices, and Savings Card. Generic Names: Sildenafil Citrate. Brand Names: Revatio. Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). Learn more about Viagra oral. 1. This is a generic drug. Even if this drug is covered by Medicare or your insurance, we recommend you compare prices.