I've had MG for more than ten years, and just recently learned from a new neurologist that taking a multivitamin with magnesium may be contributing to worsening MG symptoms. I couldn't believe no doctor had thought to tell me that sometime in the last decade!

Apparently magnesium causes an exacerbation of symptoms in MG. And a daily dose, well... not good. I never even considered that something in my vitamins could be a problem. Also, a lot of antacids and laxatives have it too, so check the label.

I've yet to find a multivitamin without magnesium, so I take a few of what I consider the most important supplements individually.

Hope this helps someone.

Sam