Rarely reported side effects include: an erection that will not go away priapism. This site is intended only for U. The most common side effects of VIAGRA: headache; flushing; upset stomach; abnormal vision, such as changes in color vision such as having a blue color tinge and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash. Rarely reported side effects include: an erection that will not go away priapism. Patients should always ask their doctors for medical advice about adverse events. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy NAION. If you prefer, you may contact the U.$ (save %) local_offer_outlined Avg retail price $ medication_outlined Availability Available See GoodRx coupons warning Are you looking for information on sildenafil (Revatio) instead? What is Sildenafil (Viagra)? Drug Facts Common Brands Viagra Drug Class PDE-5 inhibitor. Best subscription service for Viagra and generic Viagra: Rex MD Viagra Although erectile dysfunction (ED) may be an upsetting diagnosis for some, many people find their condition is. YOUR SAVINGS, YOUR WAY. Text. Download. Email. With the VIAGRA Savings Card, eligible patients may save 50% on up to 12 prescriptions of brand-name VIAGRA per year.*. *Eligible patients could save up to $4, a year. Savings Card only works on brand-name VIAGRA. Terms and conditions apply.