I take mine when I start to wilt.....you will know when you need it. Your doc really should have given you better instructions, though.
MG is a pain in the butt and you do not need more stress to add to it!
Hope this helps!
Erin
There are days when I only need 2 and then there are days when I take 5 or 6 - just depends on how I feel and what I did the day b/4..........