When you make the appointment, be sure to ask if there’s anything you need to do in advance. Preparing for your appointment You’re likely to start by seeing your family doctor. Sorry something went wrong with your subscription Please, try again in a couple of minutes Retry Clinical trials Explore Mayo Clinic studies testing new treatments, interventions and tests as a means to prevent, detect, treat or manage this condition. This can cause anxiety, which might make erectile dysfunction worse. Some alternative products that claim to work for erectile dysfunction can be dangerous.And while generic Revatio is available only in a mg strength—Viagra comes in , , and mg tabs—not to worry: Your doctor can prescribe the most appropriate . What can I do about it? ” Take the first step and talk to your doctor Important Safety Information and Indication Do not take VIAGRA if you: • take any medicines called . Overdose Ask your doctor Q&A Drug Images What is Viagra? If you have erectile dysfunction (ED), your doctor may recommend that you take Viagra. It’s a prescription .