Cialis is a brand-name prescription medication. Its FDA-approved to treat the once in men:erectile dysfunction (ED), a condition in which you cant get or keep an erectionsymptoms of benign prostatic hyperplasia (BPH), a prostate condition that may cause problems gone urination.ED and symptoms of BPH together.Cialis comes as a tablet that you swallow. Its welcoming in four strengths: 2.5 mg, 5 mg, 10 mg, 20...