My horse had an MG deficiency. Fed this for 6 weeks, re-check bloodwork, all normal.

I have been feeding my mare this for about 2 years. It has made a world of difference in her— she is much quieter and less agitated (charging, biting) with her pasture mates. She is very focused and consistent when riding too, before she was tense and would often buck when asked to move out. I never run out of this for her! Thank you for such a great and affordable product!

Absolutely IN LOVE with this product! My little specials have decided that the end of the ring is not harboring 😈 demons! The ride ability is much better!

This is by far the best powder magnesium on the market! The best potency and price.

Awesome product and awesome price!

All my horses are on the magnesium supplement and they love it, i see a difference. Yes I recommend it to everyone who has horses.

Helped my horse relax.

A good number of our horses leave the magnesium in their feed buckets

Madbarn magnesium is a great product. I feel it helps my horse who can be unsettled and also keeps his feet from splaying out flat. It is also a great value. However, the website and subscription setup is very difficult to use, to change the order in any way (timing, add to it, etc).

Mad Barn is always there to help with equine nutrition. Quick response to questions by professionals. Orders have a quick turnaround time and always correct.