This chart compares 6 major Erectile Dysfunction (ED) drugs currently on the market: Viagra, Levitra, Cialis, Staxyn, Stendra, injections and the MUSE suppository. This chart compares 6 major Erectile Dysfunction (ED) drugs currently on the market: Viagra, Levitra, Cialis, Staxyn, Stendra, injections and the MUSE suppository. Visit our Decision Guide … Continue reading Erectile Dysfunction Drugs Comparison Chart