Thanks for the input. Abby, you're right it could have been coincidence, but my attacks are usually longer than 30 minutes. Will keep trying to see what results I can get.

Annie, I was not very clear, sorry. No, I did not overdose the first time. I was actually a little bit afraid to try the Mestinon because of what I've learned here. I planned to wait until I was supervised, and only take 15mg to start with. My husband got angry, and accused me of not wanting to get better and not being compliant with doctor's orders. Anyhow, I took 60mg, and felt the effects of it 30 minutes later. I did not take a second dose. It was so terrible and my husband could see that 60mg was making me worse, not better.

To all of you, thanks for the suggestions about dosing. I will try again with 15mg on a regular schedule, see what happens, and titrate up if appropriate.