WebSep 12, · Drug Images What is Viagra? If you have erectile dysfunction (ED), your doctor may recommend that you take Viagra. It’s a prescription drug that’s used in adult .Your doctor or other health care professional can recommend one for you based on these factors, other health conditions you have and any other medicines you take. They’re often the first line of treatment for trouble getting or keeping an erection, called erectile dysfunction ED. Its effects might last longer if you have mild to moderate ED. An inherited eye disease that affects the retina. Generic versions of sildenafil, vardenafil and tadalafil are available. The four main medicines taken by mouth for erectile dysfunction are: Avanafil Stendra. It lasts 4 to 5 hours, or longer if you have mild to moderate ED.WebJun 24, · The four main medicines taken by mouth for erectile dysfunction are: Avanafil (Stendra). Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called . WebNov 10, · Sildenafil (Viagra) is a phosphodiesterase-5 (PDE-5) inhibitor. PDE-5 is a protein in your body that breaks down the molecules that normally cause an erection. . WebClinically proven to treat men with erectile dysfunction (ED) Ongoing commitment to product quality and safety monitoring Learn More IF YOU CHOOSE BRAND-NAME VIAGRA, .Its effects often last for 4 to 5 hours. The information provided is for educational purposes only and is not intended to replace discussions with a healthcare provider. Its effects might last longer if you have mild to moderate ED. These are commonly prescribed for an enlarged prostate or male pattern baldness. How oral medicines differ Each oral medicine for ED has a slightly different chemical makeup. Recent heart or blood vessel problems.