Your reassurance that this isn’t the case can help. What you can do Take these steps to prepare for your appointment: Ask what you need to do ahead of time. Being overweight can cause — or worsen — erectile dysfunction. And whilst Tadalafil is thought to be tolerated better by most men, this has not been clinically confirmed. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail.If you have erectile dysfunction (ED), your doctor may recommend that you take Viagra. It’s a prescription drug that’s used in adult males* with ED. With ED, you . They’re often the first line of treatment for trouble getting or keeping an erection, called erectile dysfunction (ED). Oral medicines for ED usually work well and . Diseases & Conditions Erectile dysfunction Symptoms & causes Diagnosis & treatment Doctors & departments Care at Mayo Clinic Diagnosis Erectile dysfunction .