I was just given a definite diagnosis of Mg. I am on Mestinon 3 times a day (30mg) taking it in the morning gives me a terrible stomach cramp an then diarrhea, after it passes then I feel better. I went to 1 pill a day, was better taking at lunch. But on Dr. diagnosing me, put me back on 3 pills a day. So he gave me a pill to help with the stomach cramp, but still have the diarrhea. I also have a lot of trouble with Antacid reflex issues. So with this doesn't help. I have tried to make sure I eat something when taking my medicine. Any other ideas.