An inherited eye disease that affects the retina. When oral medications might not be safe Check with your health care team before you take any medicine for erectile dysfunction. In some patients, the use of VIAGRA with alpha-blockers can lead to a drop in blood pressure or to fainting medicines called HIV protease inhibitors, such as ritonavir Norvir , indinavir sulfate Crixivan , saquinavir Fortovase or Invirase , or atazanavir sulfate Reyataz some types of oral antifungal medicines, such as ketoconazole Nizoral and itraconazole Sporanox some types of antibiotics, such as clarithromycin Biaxin , telithromycin Ketek , or erythromycin other medicines that treat high blood pressure other medicines or treatments for ED VIAGRA contains sildenafil, which is the same medicine found in another drug called REVATIO. The products discussed in this site may have different product labeling in different countries. If it is not treated right away, priapism can permanently damage your penis sudden vision loss in one or both eyes. These medicines all work well for ED. It might work longer if you have mild to moderate erectile dysfunction.Compare prices and print coupons for Sildenafil (Generic Revatio and Viagra) and other drugs at CVS, Walgreens, and other pharmacies. Prices start at $ Schedule a COVID test now Virtual Care Don’t want to leave the house? Connect with a licensed provider 7 days a week from the comfort of home. Explore Virtual Care Loading MinuteClinic can treat over different conditions. Find a walk in location near you today. The four main medicines taken by mouth for erectile dysfunction are: Avanafil (Stendra). Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that relaxes muscles .