Some examples of nitrates are nitroglycerin Nitro-Dur, Nitrostat, others , isosorbide mononitrate Monoket and isosorbide dinitrate Bidil. Yes, ED pills can cause side effects. You’ll also need to fill out a medical questionnaire with answers about your medical history, current medications, and lifestyle habits. An OTC drug will help patients get treatment more quickly. Some services offer a subscription option where they’ll send your medications every month at a discount. Read our editorial process.Performer 8 – Overall Best Over The Counter ED Pills; Top Selling. VigRX Plus – Best Male Enhancement Pills For Better Sex Drive. TestoPrime – Best Sex Pills To Increase . AdEnjoy Greater Libido & Performance. Fast Express ries: Various · Best Sellers · Aphrodisiacs · All Products · Ubulawu Dream Herbs. Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that relaxes muscles .