It depends on the platform and insurance provider. Most erectile dysfunction medications belong to the drug class known as PDE5 inhibitors , which help relax the muscles and increase blood flow to allow for a full erection. Other conditions that may disqualify you from an ED prescription include a history of stroke, kidney or liver disease, cancer, diabetes, or a bleeding disorder. This is important for your overall health and safety, as certain medications can negatively interact with each other or cause existing conditions to worsen. If you prefer, you may contact the U. Common side effects include headache, facial flushing, indigestion, and dizziness. This information is reviewed by a licensed practitioner who will assess your eligibility for the medication.Quantity Manufacturer’s Savings Card Sponsored You may be eligible to save up to 50% on your brand-name prescription * * Terms and Conditions Apply Get Savings Card . 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): . Learn more about what VIAGRA® (sildenafil citrate), a prescription treatment for ED. 50 mg, and mg tablets. Patients should always ask their doctors for medical advice .