Compare prices and print coupons for Cialis (Tadalafil (Cialis)) and other drugs at CVS, Walgreens, and other pharmacies. Prices start at $ See more.In , Pfizer scientists discovered that sildenafil, which also inhibits the PDE5 enzyme, caused penile erection in males participating in a clinical study of a heart medicine. If you need emergency medical care for a heart problem, it will be important for your health care provider to know when you last took Cialis. What important information should you know about Cialis? What special precautions should I follow? If you are taking tadalafil to treat erectile dysfunction, follow your doctor’s directions and the guidelines in this paragraph. Your doctor may need to change the doses of your medications or monitor you carefully for side effects. For further information contact your pharmacist or Eli Lilly and Company directly.Cialis offers may take the form of printable coupons, rebates, savings or copay cards, trial offers, or free samples. Certain offers may be printable from a site while others may . Tadalafil Brand names: Cialis, Adcirca. Tadalafil. Find out how tadalafil treats erectile dysfunction, pulmonary hypertension and benign prostate enlargement, and how to take it. Tadalafil 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). It is sometimes known by its generic name tadalafil, and sometimes known by its trade name, Cialis. There are also other brands of this medicine available.It’s also sometimes used to treat pulmonary hypertension high blood pressure in the blood vessels that supply the lungs. If you have erection problems, tadalafil works by temporarily increasing blood flow to the penis when you get sexually excited. Ask your pharmacist or doctor for a copy of the manufacturer’s information for the patient. Who should not take Cialis? Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand.