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Magnesium

Support calm behaviour and muscle function

113 reviews. 4.9 / 5
  • Reviews
  • Technical
  • FAQ's
Guest - 01/09/2026 15:43
I have been using the magnesium supplement for over a year. This has made a huge difference to my horse’s behaviour enabling him to be more relaxed and focused.
Guest - 31/08/2026 19:37
Very happy with my product
Guest - 25/08/2026 07:45
Great product
Guest - 20/08/2026 08:40
Horse happy to eat with food - seems to have helped with some anxiety
Amanda-Jane - 14/08/2026 19:35
Made a difference to my youngster, helping her to focus when we do our daily training ❤️
Mary - 14/07/2026 19:06
Only been using a week but my spooky TB id verging on being cob like 🤣
Guest - 20/05/2026 07:07
Great for my ems horse. Gives her the extra she needs without having grass
Guest - 04/05/2026 19:45
Great product, good value for money.
Patrina - 13/04/2026 21:38
Magnesium is very helpful for my anxious horse
Guest - 11/04/2026 20:06
Use this product every spring helps to keep horse calm

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Feeding Guide

 
Weight of Horse/Pony Amount per day                               
Up to 400kg ½ scoop
Over 400kg 1 scoop
 
1 level (5ml) scoop of Magnesium weighs approximately 7g. A measuring scoop is provided with this product. 

Feed supplements should be fed according to body weight. Introduce to the horse's diet gradually, splitting between feeds (when applicable).

Magnesium is a complementary feeding stuff for equine animals. Feedmark uses nothing in the formulation of this product that contravenes competition rules.

Nutrition Information

Magnesium plays an important role in normal nerve and muscle function, helping to regulate nerve signalling, muscle contraction and relaxation, and the body’s response to stress. In horses and ponies, inadequate magnesium intake may contribute to increased nervousness, excitability and tension. Used daily as part of a balanced diet, magnesium can support normal nervous-system function and may help promote a calmer, more relaxed approach to work. Magnesium can help support cells' response to insulin and can assist with metabolism by contributing to the utilisation of fatty acids for energy.

Composition

Magnesium oxide (100%)

Analytical

Crude protein 0.3%, Crude oils & fats <0.1%, Crude fibre 0.5%, Crude ash 100.0%, Acid insoluble ash 5.9%, Sodium 0.01%

What source of Magnesium is this?

This product contains Magnesium Oxide. 

 

How much Magnesium does this product contain? 

Magnesium Oxide contains approimately 56% Magnesium.