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Magnesium Oxide

Also known as: Magnesium Hydroxide, MgO, Milk Of Magnesia

The oxide salt of magnesium with antacid, laxative and vascular smooth muscle relaxant activities. Magnesium oxide and magnesium hydroxide are similar in structure and function and are both common ingredients in over the counter digestive tonics. Both magnesium hydroxide and magnesium oxide can have a mild laxative effect. These forms of magnesium generally cost less than other types of magnesium but have lower bioavailability. As a result, magnesium oxide and magnesium hydroxide supplements may contain as much as 60% more magnesium than other types of magnesium supplements to help make up for the lower bioavailability.

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