It is also approved to treat urinary symptoms that can result from an enlarged prostate like a weak stream, urinary frequency, and urinary urgency. Common side effects include headaches, flushed skin, nasal congestion stuffy nose , runny nose, back pain and upset stomach. Try nicotine replacement, such as over-the-counter gum or lozenges, or ask your doctor about a prescription medication that can help you quit. Are there any brochures or other printed material that I can take home with me? How oral medicines differ Each oral medicine for ED has a slightly different chemical makeup. Side effects with all of the supplements mentioned here tend to be mild if any occur. In general, ED treatment side effects are mild and temporary.Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that . Get ED meds online, shipped to you. FDA-approved ED pills. Generics up to 95% cheaper than brand name. % online, discreet delivery. No waiting weeks for an . These medications might not treat your erectile dysfunction immediately. You might need to work with your doctor to find the right medication and dosage for you. .