I guess I should say the mestinon is to give me energy from muscle fatigue/weakness. I started off telling doctors I felt weak and they said I was incorrect and that I had muscle fatigue. So I am confused as to which one is correct. I was running out of energy very quickly and spending from 4pm onward like a blob on the couch. Now i am able to exercise without having to rest every five minutes. There is definitely something wrong with my nerves somewhere for the mestinon to be working. Otherwise the mestinon makes normal people weaker. It is not just a matter of eating right.