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Magnesium Oxide Heavy

Excipient (pharmacologically inactive substance)

What is it?

Magnesium is a naturally occurring mineral, and is essential for the diet. It is an odorless, white powder. It is important for many systems in the body, especially the muscles and nerves. Magnesium is present in fruits, vegetables, grains, milk, meat and fish and the natural content of these foods is the major source of the current dietary intake. Magnesium oxide (MgO) is used as a supplement to maintain adequate magnesium in the body. Magnesium oxide is also used in the pharmaceutical industry as a tablet and capsule diluent. Magnesium oxide heavy is the more dense, compact form of magnesium oxide.[1][2]

[1] Magnesium oxide. Accessed February 21, 2015 at

[2] [2]Dave RH. Overview of pharmaceutical excipients used in tablets and capsules. Drug Topics (online). Advanstar. 10/24/2008 Accessed 08/19/2011

[3] Food and Agriculture Organization. Magnesium oxide. Accessed February 21, 2015 at