Hello! This is my first ever post here, so greetings to you all! My question is for any of you who have taken Mestinon or Pyridostigmine. I began this med October 2014 and was so encouraged with the benefits it gave me which were: less orthostatic intolerance, less muscle weakness, less dizziness, and much less bloating. I started with a low dose and gradually increased to 60 mg 3x a day. Along the way as I was increasing the dose I experienced side effects of bouts of diarrhea and muscle twitching (especially my eyelids to the point I couldn't see straight sometimes). Still, it was worth it! When I attempted to go up to 4 pills a day I started having nastier side effects, such as slurred speech and muscle weakness along with the muscle twitching and diarrhea. My doctor and I decided to cut back on the dosage but the side effects did not subside, so we discontinued it. Have any of you had similar experiences and later gone back on Mestinon? Do our bodies just need a break from it every now and then? This med has given me the greatest results of anything I've tried except for beta blockers and I would love to be able to get back on it.