This medication is taken with or without food an hour before sex. Drug interactions Finding the best treatment for erectile dysfunction means prioritizing your safety. These include chest pain and tightness, shortness of breath, extreme lightheadedness, and swelling in the hands and feet. 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. The four main medicines taken by mouth for erectile dysfunction are: Avanafil Stendra. Read our editorial process. Using our ED service, you can get erectile dysfunction pills online safely and have them delivered to your door in just a couple of days.These medicines all work well for ED. When choosing one, tell your doctor or other health care professional what your preferences are, such as cost, ease of use, how . Viagra, Cialis, Levitra, and Stendra are oral medications used to treat erectile dysfunction (ED). You may also know them by their generic names: sildenafil .  · Given the success of drugs to treat erectile dysfunction, such as sildenafil (Viagra), tadalafil (Cialis) and vardenafil (Levitra, Staxyn), drug companies have sought .