According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety. The penis is one of the body parts where this enzyme works. This allows the smooth muscles in the penis to relax and fill with blood. It’s available in 25 mg, 50 mg, and mg tablets and lasts up to 18 hours. Can you take tadalafil every day? The most common symptoms of erectile dysfunction include difficulty achieving or maintaining an erection and reduced sexual desire.Tadalafil (pah) (Generic for Adcirca) Tablets · 20mg · day supply. With insurance. est. $ Estimated insurance price. Final price varies with your insurance. Without insurance. $$ Prime member price, day supply. Tadalafil is the affordable generic version of Cialis®. Its active ingredient is identical to what you get from name brand Cialis®, but it’s available through Hims for a much more affordable price—over 90% less. Get started today. Learn more. Good to know. How we vet brands and products Cialis (tadalafil) has FDA approval to treat erectile dysfunction (ED) and other sexual health conditions. This article features the most convenient and discreet.