I am new to this forum but not new to MG. Diagnosed in 1995 and had my share of ups and downs, treatments, etc. Prostigmin works better for me than Mestinon. Is it true that Prostigmin is not manufactured now? I had been told by Valeant that it was on back order but I read on another post that it is now listed as being discontinued.

Mestinon causes major GI problems for me. Is there any other alternative?