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Magnesium

Support calm behaviour and muscle function

85 reviews. 4.9 / 5
  • Reviews
  • Technical
  • Feeding Guide
Guest - 18/07/2025 08:13
My mare has become a lot calmer and more relaxed in herself . She has EMS and the Magnesium and correct diet are keeping her sound and looking amazing.
Sarah - 16/07/2025 19:17
Horse nutrition is a minefield. I’d firstly suggest that you check if your horse is deficient in magnesium before buy. This product is amazing but it has no ‘fillers’ and it’s 100% what is say on the packet.
Every feedmark product I have used has been amazing - the ingredients are all in the purest without the fillers. Always recommend feedmark.
Guest - 11/07/2025 21:18
Great product as always from Feedmark. Due to my mare having EMS with a higher risk of laminitis and lush summer grass which we are having to restrict her on, I did some research and it was suggested magnesium could help, not only for the vitamin element but it can help to reduce fat pads by aiding the digestive system. As I use Feedmark already for her vit E, I knew I was buying from the right company.  I believe I’m seeing a difference already.
Guest - 10/07/2025 20:22
Makes such a difference to my young warm blood as his muscles change and develop
Guest - 07/07/2025 19:30
Love this for my horses, one is laminitis prone and this has been great. The other has helped with focus and the calming properties have helped. Would definitely recommend.
Guest - 03/07/2025 19:58
Feedmark Magnesium is excellent value. I have given my pony Magnesium as she can be unsettled in a spooky way, and a little mareish at times. It really helps her ability to be more settled and to concentrate.
Guest - 30/05/2025 16:22
Good product has kept my horse sane!
Guest - 26/05/2025 21:40
Better than any calmer and works
Guest - 02/05/2025 22:25
A big difference after just a few days. Pony much calmer and less jumpy. Will carry on and also add other calmers. Hoping this will eventually leas to a happy relaxed pony.
Guest - 29/04/2025 08:05
A very small amount seems to be making a huge difference in my horses nervous excitability especially around grass flush time. Evidence shows we are all deficient in this mineral at certain times.

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Nutrition Information

Magnesium plays an important part in nerve and muscle function and can be helpful in calming horses and ponies.  Used daily, Magnesium can help to reduce difficult behaviour and produce a more relaxed approach to work.  Magnesium can also assist in attaining normal fat coverage in overweight equines, especially those with a cresty neck/fatty pockets.  Each daily serving provides 6g of bioavailable Magnesium oxide per scoop. 

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%

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

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.