Severe liver disease. When oral medications might not be safe Check with your health care team before you take any medicine for erectile dysfunction. In some cases, online ED providers accept health insurance. We considered cost, medications available, and whether generic versions were offered to help reduce costs. If approved, the provider will issue a prescription.Eroxon, the brand name for MED, is currently available in Belgium and the U.K. It claims to “help you get an erection within 10 minutes.” About half of all men will . Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that relaxes muscles . Generic Viagra (sildenafil): $4 per 25 mg pill, $6 per 50 mg pill, $10 per mg pill; Branded Viagra: $90 per 25 mg, 50 mg, or mg pill; Generic Cialis (tadalafil): $11 per 5 mg pill, .