Karen, the main urinary side effect that I've heard about with Reglan is urinary hesitation -- i.e., pauses before you are actually able to urinate. With Reglan, it's important to get to the doctor quickly if you begin to suspect that the side effects are happening. The doctor will most likely administer Benadryl. If left unchecked, some side effects can be lifelong. Don't want to scare you. Many people use Reglan without incident. However, the longer you use it, the greater the chance of side effects.