when I was at my doctor's appointment on Friday (where I got a firm diagnosis of "early" MG), she said something that I NEVER would have thought of in a million years.

Apparently, Mestinon can become ineffective if it sits on the pharmacy shelf too long. Since not many people need it, pharmacies can sometimes have older stock - it may still be within expiration limits, but it might not be at optimum strength.

She told me that if I ever felt like the Mestinon wasn't working, to call the pharmacy and ask them for some "fresher" stuff.

Just thought you might like to know....