And some have tried Tacrolimus/Prograf. It's a macrolide immunosuppressant though and is relatively contraindicated in MG and for those with a cancer history in their family.

Mestinon Syrup kicks in sooner than tablets. On average, Mestinon kicks in about 1/2 hour after taking it and wears off about 2-1/2 hours after taking it. Again, this varies per person somewhat. So, yeah, it's great having only two good hours of muscle strength.