This is important for your overall health and safety, as certain medications can negatively interact with each other or cause existing conditions to worsen. They enhance the effects of a chemical the body makes that relaxes muscles in the penis, called nitric oxide. ED medications can cause side effects, and it’s crucial to have access to a medical provider if needed. An inherited eye disease that affects the retina. Finding an online ED provider can feel overwhelming. Privacy: Confirm that your personal data and payment details are confidential.Teva Pharmaceuticals plans to release its generic of the “little blue pill” as early as December. In , Pfizer, the maker of both Revatio and Viagra, sued Teva for patent . Find your nearest Walmart Neighborhood Market Pharmacy in Las Vegas, Nevada. View store hours, reviews, contact information and prescription savings with GoodRx. Lemonaid Sildenafil Best price for generic Viagra when bought in bulk: Optum Store Sildenafil If you are experiencing the symptoms of erectile dysfunction (ED), you may .