Check with your doctor immediately if any of the following side effects occur: Less common burning feeling in the chest or stomach burning, crawling, itching, numbness, prickling, “pins and needles”, or tingling feelings cloudy or bloody urine. Angina severe chest pain , unstable or Arrhythmia irregular heartbeat, within the last 6 months or Blood vessel problems eg, aortic stenosis, idiopathic subaortic stenosis or Heart attack within the last 6 months or Heart failure or Hypertension high blood pressure or Hypotension low blood pressure or Retinal disorders eye problem or Retinitis pigmentosa an inherited eye disorder or Stroke within the last 6 months —Should not be used in patients with these conditions. Storage Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Brand names Why is this medication prescribed? Tell your doctor if sildenafil is not working well or if you are experiencing side effects.Generic Viagra. Used for Erectile Dysfunction. Used for Erectile Dysfunction. savings_outlined. GoodRx lowest price. $ (save %) local_offer_outlined. Avg . See brand name versions of this drug: Viagra; Important: When there is a range of pricing, consumers should normally expect to pay the lower price. However, due to stock shortages and other unknown variables we cannot provide any guarantee. mg sildenafil oral tablet. from $ for 2 tablets. Quantity Per unit Price; 2: $ $ 6: $ Generic name: sildenafil (oral) [ sil-DEN-a-fil ] Brand names: Revatio, Viagra Drug classes: Agents for pulmonary hypertension, Impotence agents Medically reviewed by .