Do not take a double dose of medicine to compensate for the missed one. The first document guaranteed sole production and sale of the substance until , while the second gave Pfizer the exclusive use to treating erectile dysfunction with sildenafil until Refills: See if you can set up automatic refills or order as needed. Read these before you buy the product. This, in my view, is the key issue in this appeal.Find information on sildenafil and cost, how generic and brand-name prices compare, what financial assistance is available, and more. VIAGRA is available by prescription only in 25 mg, 50 mg, and mg tablets. Patients should always ask their doctors for medical advice about adverse events. You are encouraged to report adverse events related to Viatris products by calling 1 . Since Viagra is a brand-name medication, the price of Viagra is very high and may not currently work within your budget. Thankfully, Viagra costs around $60–$70 per tablet. Generic.