Ask your pharmacist for a list of the ingredients. If you become pregnant while taking tadalafil, call your doctor. Comparison with actions of other PDE5 inhibitors[ edit ] Sildenafil and vardenafil inhibit PDE6, an enzyme found in the eye, more than tadalafil. If you are thinking about using tadalafil please discuss it with your doctor. Counterfeit medicines can be very dangerous. Take tadalafil exactly as directed.Tadalafil (Cialis) is a medicine used to treat erectile dysfunction (ED, also called impotence) and problems with urination caused by an enlarged prostate (benign prostatic hypertrophy or BPH). Tadalafil works by helping to relax the blood vessels in the penis, allowing blood to flow into the penis, and causing an erection. AdEnjoy Greater Libido & Performance. Fast Express ries: Various · Best Sellers · Aphrodisiacs · All Products · Ubulawu Dream Herbs. AdShop Exclusive Online Promos At Walgreens with 1 Hour Delivery. Use Code WAG10 To Save 10% Instantly At Walgreens. Shop Online & Get Free Delivery!Contactless Delivery · Walgreens 1 Hour Delivery · Order On vice Catalog: Prescriptions · Flu Shots · Immunizations.