These studies have shown that Sildenafil is highly effective in treating ED and has minimal side effects when taken as directed. Those with mild and moderate erectile dysfunction saw improvements of two and three points, respectively. Generic viagra is generally well-tolerated, with common side effects including headache, flushing, and indigestion. It’s also worth mentioning that generic Viagra should not be taken by everyone. Generic viagra is widely used for the treatment of erectile dysfunction ED.Here’s our process. How we vet brands and products People looking to buy erectile dysfunction (ED) medications online may wonder where to begin — especially since some medications, like Viagra, Missing: usa. Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that relaxes muscles in the penis, called nitric oxide. This boosts blood flow and helps you get an erection from sexual g: usa. Savings will vary by medication and by pharmacy. The discount plan organization is Hippo Network LLC, One World Trade Center, Suite New York, NY , , help@, DRUG_DESCRPTION Compare DRUG_NAME prices and find coupons that could save you up to 80% instantly at .