What’s the difference between potential ED treatments? Home » Does Medicare Cover Cialis? In even rarer cases, there have been more serious side effects reported, including back pain, chest pain and priapism. All of these Phosphodiesterase 5 inhibitors work in a similar way: the relaxation of the penile blood vessels to support expansion, which gives a stronger erection during arousal. The most effective medication for ED will be the one that fits your lifestyle and has the best safety profile for your unique body. Note: If you experience sudden vision loss or symptoms akin to a heart attack, contact your doctor immediately and refrain from further sexual activity.Tadalafil (Generic for Cialis) Tablets · 20mg · 6-day supply With insurance est. $ Estimated insurance price. Final price varies with your insurance. Without insurance . Tadalafil (Cialis) is a phosphodiesterase-5 enzyme (PDE-5) inhibitor. It works by blocking PDE This is a protein in your body that breaks down the molecules that Missing: amazon. Sign in to Amazon Clinic Erectile dysfunction (ED) treatment 1, Men, ages FSA or HSA eligible. Get erectile dysfunction (ED) treatment from an online doctor or NP .