They are all approved for treatment of erectile dysfunction. Cialis is a brand name product whereas Tadalafil is generic — although it has the same active content and effects. What Are the Symptoms of Erectile Dysfunction? Each individual is different, but now you can be sure that Tadalafil and Cialis are medical equivalents. We also looked at additional services, such as access to digital pharmacies and home delivery options. Generic versions of tadalafil that are FDA-approved are just as effective as Cialis. 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.Cialis (tadalafil) is an expensive drug used to treat erection problems in men. It may also be used to treat the enlargement of the prostate gland. This drug is slightly more popular . There are many ways to save on Cialis, which is available as both a brand-name and generic medication. Save with GoodRx. GoodRx can help you save over 97% . Find Lowest Prices Cialis Coupons, Prices, and Savings Card Generic Names: Tadalafil Tadalafil is used to treat male sexual function problems (impotence or erectile .