They have the same benefits and risks as their brand-name counterparts. This is important for your overall health and safety, as certain medications can negatively interact with each other or cause existing conditions to worsen. These medicines all work well for ED. What should I talk to my doctor about when considering if Cialis is right for me? The most common symptoms of erectile dysfunction include difficulty achieving or maintaining an erection and reduced sexual desire.Compare prices and print coupons for Cialis (Tadalafil (Cialis)) and other drugs at CVS, Walgreens, and other pharmacies. Prices start at $ We have good news for you: generic Cialis, used to treat erectile dysfunction (ED)and enlarged prostates, just hit pharmacies. Prices for the generic, known as tadalafil, are . The most commonly reported side effects in patients treated with Cialis during the testing of the product were: headache. indigestion. back pain. muscle pain. flushing. stuffy nose. Patients who.