If it is not treated right away, priapism can permanently damage your penis sudden vision loss in one or both eyes. Those with pre-existing conditions should always consult a healthcare provider before taking new medications or supplements. More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. There are many safe, reliable online services offering ED prescriptions. This increase in blood flow results in a firmer, longer-lasting erection. Such patients must not apply any out-of-pocket expenses incurred using this Savings Offer toward any government insurance benefit out-of-pocket spending calculations, such as Medicare Part D true out-of-pocket TrOOP costs You are responsible for reporting use of this Savings Offer to any private insurer, health plan, or other third party who pays for or reimburses any part of the prescription filled using this Savings Offer, as may be required.According to price-comparison site , generic Revatio will cost you as little as $ per pill, depending on where you fill your prescription. That’s compared with . (Generic Viagra, Revatio) 30 tablets mg. $ with free Coupon. Get Free: Coupon. atorvastatin (Generic Lipitor) 90 tablets 20mg. $ with free Coupon. Get Free: . sildenafil citrate or viagra Savings, Coupons and Information. | SILDENAFIL (sil DEN a fil) treats erectile dysfunction (ED). It works by increasing blood flow to the penis, which .