My Best Horse Inc.

MagOx Elite

MagOx Elite

Regular price $19.00
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Magnesium 59.4%
Food Grade, Ultra-Pure, Low Iron, Low Lead – packaged for horses!

My Best Horse magnesium oxide is ultra-pure and low in iron, with only about 10-20 mg of iron per 10 gram serving of magnesium oxide. This is suitable for supplementing horses which have iron overload.
A white powder, magnesium oxide is readily absorbed in horses.

The majority of magnesium in the horse’s body is located in the bones and muscle. It plays a role in electrolyte balance within the body.
As a cofactor, it affects enzyme reactions, such as:
  • Kinase B
  • Hexokinase
  • Creatine kinase
  • ATPase
  • NA+/K+ ATPase

Other areas in which it plays a role:
  • Membrane function
  • Cell adhesion
  • Muscle contraction/relaxation
  • Neurotransmitter release
  • Structural function of the mitochondria

Magnesium plays a role in over 300 different reactions in the body and is commonly used as a calming supplement. However, additional research is needed to determine the validity of this usage, as well as efficacy.

Care should be taken, upon supplementation, to keep the Ca:Mg ratio at about 2:1. For more information on the role of magnesium in the body, the Clinical Kidney Journal has an excellent review at

Manufactured in the USA.

Serving size

Suggested serving size:  Recommended amount is 10-20 grams per day of elemental magnesium, or at the advice of your veterinarian. This product is 59.4% elemental magnesium. To achieve 9 grams of elemental magnesium, you would need to feed 15 grams of MagOx Elite (about 3 level tablespoons). To achieve 18 grams of elemental magnesium, you would need to feed 30 grams of MagOx Elite.

Density: Approximately 5 grams magnesium oxide per US tablespoon.

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