· Description and Brand Names Drug information provided by: Merative, Micromedex ® US Brand Name Adcirca Cialis Descriptions Tadalafil is used to treat men who have erectile dysfunction (also called sexual impotence). Tadalafil belongs to a .Cialis is a brand-name prescription medication. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. Tadalafil has been extensively studied for ED. Cialis is also highly effective in reducing the symptoms of BPH. You may attempt sexual activity at any time between doses. Read and follow these instructions carefully. · Cialis (tadalafil) is prescribed to treat erectile dysfunction and symptoms of benign prostatic hyperplasia. It comes as a tablet that’s taken as needed or once per .  · Adults—10 milligrams (mg) as a single dose, no more than once a day, taken 30 minutes before you think sexual activity may occur. Your doctor may adjust .  · Description and Brand Names Drug information provided by: Merative, Micromedex ® US Brand Name Adcirca Cialis Descriptions Tadalafil is used to treat men who have erectile dysfunction (also called sexual impotence). Tadalafil belongs to a .Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Tadalafil will make these symptoms less severe and reduce the chance that prostate surgery will be needed. If you are already taking medication to treat BPH, your doctor may tell you to stop taking your other medication at least one day before starting treatment with tadalafil. Tadalafil has been extensively studied for ED. One of these is PAH.