Some services offer a subscription option where they’ll send your medications every month at a discount. Learn more about tadalafil. More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. Typical starting doses of as-needed tadalafil are 10 or 20 mg, depending on your specific health conditions and age. Is tadalafil a controlled substance? These PDE5 inhibitors may cause headache, flushing, drop in blood pressure, or other adverse effects. You should also call your insurance company to see if they cover erectile dysfunction medications.Fastest Delivery: Blink Health: Sesame Sign Up Now Key Specs Cost: Consultation prices vary based on the prescriber; $5 generic prescriptions Medical . Get Cialis and Tadalafil pill online. Try the generic Cialis option for a fraction of the cost, after speaking with one of our online medical professionals. Tadalafil is a generic erectile dysfunction medication that’s FDA approved and clinically proven to help men with ED get and maintain erections. Getting hard just got simple. Get .