UltraCruz Equine Magnesium Plus Pellet Horse Supplement, 10-lb bag

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About This Item

Details

  • Magnesium pellet horse supplement that may help calm your nervous horse.
  • Supports your horse’s cardiac function and promotes normal blood pressure.
  • Aids in the regulation of blood sugar levels and in the metabolism of carbohydrates, amino acids and fats.
  • Helps maintain your horse’s normal muscle and nerve function.
  • Developed and made in the USA with globally-sourced ingredients.

Ingredient Information

Feeding Instructions

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Questions & Answers

4 Customer Questions

What kind of magnesium is it? Oxide, sulfate, etc.?

Answer by Chewy • Oct 10, 2022
UltraCruz® Equine Magnesium Plus Supplement for Horses contains both Magnesium Citrate and Magnesium Oxide, inorganic forms of magnesium that have been shown to have absorption rates around 70%.

how long will a 10 lb bag last one horse?

Answer by Chewy • May 06, 2022
A 10 pound bag provides a 70 day supply, and a 20 pound bag provides a 140 day supply. Administer 1 scoop, twice daily. Servings are based on an average horse weight of 1,000 pounds.

Is it as beneficial if they get one dose once a day?

Answer by Chewy • Jul 06, 2022
It is recommended that you administer this twice a day. However, you can adapt this to your feeding schedule based on your horses needs. We recommend consulting with your veterinarian before administering this supplement.

What is the dose of magnesium in the supplement?

Answer by Chewy • May 17, 2023
This recipe contains 5,000 milligrams of Magnesium per 2 scoops.
Reviews
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4.6
Rated 4.6 out of 5 stars
50 Ratings
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13 Customer Reviews

Rated 5 out of 5 stars
By stephany on Jan 16, 2026

Packaging A+, product excellent

I love how this product seems to keep my geldings rejuvenated and focused. I left off for a few months and tried another lesser priced product...Never again!

I love how this product seems to keep my geldings rejuvenated and focused. I left off for a few months and tried another lesser priced product...Never again!

Rated 5 out of 5 stars
By Diana on Aug 11, 2025

Why didn’t I buy this sooner?!?!

Our 11 yo OTTB started developing mild seasonal allergies, so our vet recommended trying a magnesium supplement. Not only did this help with his itching and sneezing,

Our 11 yo OTTB started developing mild seasonal allergies, so our vet recommended trying a magnesium supplement. Not only did this help with his itching and sneezing, but it really does calm them! Cruze was notorious for getting spooked by storms, the rain and hail being loud against the metal roof, and thunder claps causing him to pace his stall and rear. I would go up specifically with impending storms in an attempt to help calm him by seeing I was unphased. Enter this product. Instant change! He “weathers” storms like a breeze. Much more consistent in working and training. If we had known this was the magic answer, we would’ve invested in this supplement years ago!

Rated 4 out of 5 stars
By Sue on Sep 11, 2025

IMPROVEMENT

MY HORSE ROSE WAS DIAGNOSED WITH HEAD SHAKING SYNDROME, SINCE SHE HAS BEEN ON ULTRACRUZ MAGNESIUM PLUS SHE HAS IMPROVED PROBABLY 80%. I CAN ACTUALLY RIDE HER, BEFORE

MY HORSE ROSE WAS DIAGNOSED WITH HEAD SHAKING SYNDROME, SINCE SHE HAS BEEN ON ULTRACRUZ MAGNESIUM PLUS SHE HAS IMPROVED PROBABLY 80%. I CAN ACTUALLY RIDE HER, BEFORE THERE WERE TIMES I COULDN'T. LOVE THIS

Rated 5 out of 5 stars
By Nichole on Jun 22, 2025

The magnesium source

This is the best magnesium supplement I've found for my mare that actually has glycinate in it, not just oxide (more for the gut than brain). It's helped my filly

This is the best magnesium supplement I've found for my mare that actually has glycinate in it, not just oxide (more for the gut than brain). It's helped my filly chill a bit in heat.

Rated 5 out of 5 stars
By Tyler on Jan 14, 2025

Best One Yet

Much better than the powder forms most use. My horses love the taste and it's so much easier and so much less mess for me!

Much better than the powder forms most use. My horses love the taste and it's so much easier and so much less mess for me!

Rated 5 out of 5 stars
By Sue on Oct 24, 2024

Amazing product

I absolutely LOVE this magnesium! Total game changer for a couple of my flighty, high spirited horses! And they love the taste of the pellets, vs alot of the po

I absolutely LOVE this magnesium! Total game changer for a couple of my flighty, high spirited horses! And they love the taste of the pellets, vs alot of the powders!

Rated 3 out of 5 stars
By Maggie on Oct 17, 2024

Soft green pellets

My horse ate it but it didn’t work for her. I doubled the dose because she is 1300 pounds 17 hands. It did not calm her down one bit, but every Horse is differe

My horse ate it but it didn’t work for her. I doubled the dose because she is 1300 pounds 17 hands. It did not calm her down one bit, but every Horse is different.

Rated 5 out of 5 stars
By Shawn on Jan 27, 2025

Super fast shipping!

Great product!

Great product!

Rated 5 out of 5 stars
By Beth on May 21, 2024

It’s good

I haven’t seen a change in my horse. I was feeding Quiensence. This seems a better buy.

I haven’t seen a change in my horse. I was feeding Quiensence. This seems a better buy.

Rated 1 out of 5 stars
By Melissa on Dec 19, 2023

Not worth the money

I tried this in hopes of it working as well as my powdered magnesium supplement. Though it tastes better, it doesn't work. I will not purchase again and will probably

I tried this in hopes of it working as well as my powdered magnesium supplement. Though it tastes better, it doesn't work. I will not purchase again and will probably contact the company to see about a refund.