Those with pre-existing conditions should always consult a healthcare provider before taking new medications or supplements. Alternative medicine Before using any supplement, check with your doctor to make sure it’s safe for you — especially if you have chronic health conditions. As with sildenafil, a high-fat meal or alcohol keep the body from absorbing it as quickly. These medicines all work well for ED. If you have trouble quitting, get help. Erectile dysfunction can be caused by a variety of factors , including age, cardiovascular problems, diabetes, and other conditions that affect nerve function or blood flow.Drug Images Cialis (tadalafil) is a brand-name drug that’s prescribed for erectile dysfunction (ED) and benign prostatic hyperplasia (BPH). Cialis comes as an . 1. What is Cialis used to treat? Cialis is approved for the treatment of men who experience difficulty having and maintaining an erection (impotence). 2. How does Cialis work? .  · Talk with your doctor Q&A Drug Images Cialis (tadalafil) is prescribed to treat erectile dysfunction and symptoms of benign prostatic hyperplasia. It comes as a tablet .