My doctor told me to take 1000mg of magnesium oxide each day to prevent migraines. He told me to start at 500 and work up to the 1000 because it can cause diarrhea. Oh, yeah! For those who have used it, how long does it usually take for the diarrhea to stop? Any tips?
I know that problem well! For me, the diarrhea lasted about a week or 10 days. I waited a few days before upping my dose.
If you take a multi-vitamin or other supplements, check them to see if they contain magnesium. If they do, check with your doctor to see if he wants to lower you magnesium oxide dosage.