Tadalafil is also used to treat men who have signs and symptoms of benign prostatic hyperplasia BPH. Sexual activity may be a strain on your heart, especially if you have heart disease. If you experience chest pain, dizziness, or nausea during sexual activity, call your doctor immediately or get emergency medical treatment, and avoid sexual activity until your doctor tells you otherwise. Take all of the tablets for your daily dose at one time each day; do not divide the tablets to take as separate doses. 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 is used to treat men who have erectile dysfunction (also called sexual impotence). Tadalafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. These medicines prevent an enzyme called phosphodiesterase type-5 from working too quickly. The penis is one of the areas where this enzyme works. Learn about tadalafil (Cialis) usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Prices for Tadalafil (Cialis) are as low as $ with a GoodRx coupon. See coupons. What are the side effects of Tadalafil (Cialis)? tadalafil or cialis – Find The Best Price Near You | WellRx TADALAFIL (Generic for CIALIS) QTY 30 • 5 MG • Tablet • Near Add to Medicine Chest Set Price Alert Form .