Hi All-My 1st RNS failed to diagnosis whether I had MG because I was still taking Mestinon. So, neuro wants me to stop the Mestinon and re-take the test-and going in to be electrocuted again-does not turn me on LOL. Question: Can this test cause any problems to heart, nerves etc. Is it safe to take. My concern is that off the mestinon, not only do my muscles fail to work but so does other organs in my body-my stomach problems and heart issues disappear but have both returned as I am stopping the Mestinon. ANy advice? Would you take this exam again?? Thanks for any input.