Sorry I am confused also about magnesium till I get my order of magnesium glycinde I am taking the magnesium oxide. I usualy take 250mg but today I took 2 for 500mg. No diareah but is that ok or too much. I know the doc for the other said I could take up to 10 of te 120mg so that would be over 1000mg but a different kind. So is 500mg a day of the magnesium oxide till I get my order ok or is it going to cause issues though I took today. I want to help my muscle pull in my back asap.