Bests & Worsts Reviews from Amazon

Magnesium oxide contains a lot of magnesium by weight but has a bioavailability of only 4%. This form is found in many magnesium supplements can cause negative and should be avoided. Magnesium stearate – Used as a coating agent in supplements, not soluble in water, therefore should be avoided, plus not for vegetarians. Seems like it helps many of the reviewers - but just be aware that there are better and more bioavailable Magnesium supplements available.