Remember that this wikiHow quiz is informational, and your results should not be considered a medical diagnosis. Find out the facts before trying one. To prevent stomach problems, have a small meal before or after you take Cialis. Cialis Daily helps to prevent erectile dysfunction 24 hours a day. The effects of Sildenafil and Tadalafil are not identical in every person that takes them. Really, the choice is down to you. · Cialis is a prescription drug used to treat erectile dysfunction and benign prostatic hyperplasia. Learn about its dosages, form, strengths, and more. Drugs Neurogenic disorders Peyronie’s disease (distortion or curvature of the penis) Priapism (inflammation of the penis) Depression Alcohol use Lack of sexual . 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 .