Cialis: Package Insert / Prescribing Information – Drugs.com Cialis relaxes muscles of the blood vessels and increases blood flow to particular areas of the body. Cialis is used to treat erectile dysfunction (impotence) and symptoms of benign prostatic hypertrophy (enlarged prostate). Cialis is used to treat erectile dysfunction (ED) and to reduce symptoms of benign… Lees verder Cialis: Package Insert / Prescribing Information – Drugs.com