dar78999, There are so many things that can cause fainting, such as being dehydrated! Do you have any known heart condition? Perhaps being evaluated for syncope is a good idea. Don't assume it's from a drug. A high or low BP can cause fainting too.

I faint when I experience extreme pain. I've never fainted due to Mestinon.

Rach, I think Celeste has high blood pressure. Right? Celeste has a very wry sense of humor. Oh, you guys are quick! You snuck in there before I could post. I'm glad you clarified that, Celeste.

Annie