Sorry to hear this but at least you tried. I am going through the same thing, trying different things. For example I have stopped my 12 hr time release Mestinon at night. What happened was I ran out and didn't get refill for 3 days so I have just continued not taking it (now 6 days) and I see no difference. I am going to cut back on my 60mg I take during the day to see what happens. I have been saying for some time that the Mestinon was doing nothing for me. I have 4 more IVIG treatments and am going to talk to my neuro about stopping those also since I see no results from them.
Hang in there we will get answers one day.
Mike