Phosphodiesterase type 5 PDE5 inhibitors. It depends on the platform and insurance provider. This allows the smooth muscles in the penis to relax and fill with blood. They have the same benefits and risks as their brand-name counterparts. We considered cost, medications available, and whether generic versions were offered to help reduce costs. According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety.Pros lasts up to 36 hours for some people, which is longer than Viagra can be taken as needed or on a daily, regular basis daily use allows for a more spontaneous sex life can . Key takeaways: The best treatment for erectile dysfunction (ED) is the one that is best for you. Sildenafil (Viagra) and tadalafil (Cialis) are the most commonly prescribed . Read on to learn where to buy Viagra and sildenafil online — plus, more about how Viagra works, its alternatives, and how it compares with other ED medications.