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Smart & Simple® Magnesium

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Working Dog - More than two hours of vigorous exercise daily
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Product Overview

Supports proper nervous system, metabolic & muscle function

Smart & Simple Magnesium (formerly Magnesium Oxide by Uckele) provides 5,000 mg of magnesium, a macromineral that plays key roles in muscle contraction, nerve signaling, and metabolic function. A common area of deficiency in horses, insufficient magnesium may lead to signs of nervousness, excitement, or muscle tremors. Supplementing magnesium supports healthy muscles, normal glucose metabolism and insulin sensitivity, as well as proper nervous system function to help promote relaxation and a calm demeanor.  
  • Provides 5,000 mg of magnesium oxide per serving
  • Helps support a calm demeanor, healthy muscles and metabolic function

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Key Ingredients


Supplement Facts

Ingredient Name Amount Per Serving
Ingredient Name Amount Per Pound

Ingredient Details


Weight Recommended Amount Loading Amount

How the Ingredients Work


Supporting Success

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The reviews provided on this website represent the experience of the individual posting the review. We do not adopt, edit, or endorse any of the submissions posted within the reviews section. Rather, the reviews are part of an online community of animal owners that desire to share their particular experience with other individuals. These reviews are not a substitute for discussing the health of your animal with a veterinarian.

SmartPak customers are some of the most conscientious animal owners around. We encourage you to share your experience with the products we sell to help fellow customers to make informed choices for their animals. We do not edit these reviews in any way - they are direct customer-to-customer communication. We do monitor reviews for positive and negative feedback, and use this feedback to improve our selection as well as sharing feedback with product manufacturers to help them improve their products. Please note that we recommend consulting your vet with serious health issues.

Smart & Simple® Magnesium is rated 4.6 out of 5 by 68.
Rated 5 out of 5 by from Quick shipping Great Product! This has been great for my senior Minis! And I couldn't believe how fast I got my order! Thanks
Date published: 2020-03-17
Rated 5 out of 5 by from No longer a head shaker! I have a 6yo homebred TB who developed headshaking syndrome June 2019. He could not be ridden. Since starting him on Uckele Magnesium Oxide, he is back in work and doing great! So pleased!
Date published: 2020-02-07
Rated 5 out of 5 by from Ex studs and star temperament My 14 year old gelding was a 12 year old Paso Fino stud when given to me. Very high strung, couldn't listen, reacted to every little occurrence. The Ukele magnesium has worked wonders on him. He isn't perfect yet and not likely ever to be, but he is safer to be around and a lot more fun!
Date published: 2019-11-24
Rated 5 out of 5 by from Referred product I was referred this product from my ferrier. So far so good. All seems to help my horse be calm too on top of being a beneficial nutrient. Good price for the price, very affordable. Decent timing on shipment. Will definitely purchase again.
Date published: 2019-09-26
Rated 5 out of 5 by from Love it Exactly what I needed. My horse refused his magnesium that he has to take so this can be mixed in his home made cookies without him knowing.
Date published: 2019-09-03
Rated 4 out of 5 by from Best bang for your buck! My mares both present some signs of being magnesium deficient and have been searching for a reasonable product to try. This is the BEST bang for your buck if magnesium needs to be added and you don't have many options in a rural town. Shipping was fast, small scoop size to hide it from my picky eater! No complaints!
Date published: 2019-08-30
Rated 5 out of 5 by from Love the product for my Love the product for my older mare. Helps her muscles.
Date published: 2019-08-27
Rated 5 out of 5 by from Great product. Mixed with my horses custom feed they eat it all up.
Date published: 2019-08-25
Rated 5 out of 5 by from Great product Uckele's Magnesium product has made all the difference for our horse. He injured his C2 vertebrae and was extremely sore and stiff. His whole body was very hard and weak. He has a long recovery ahead of him, but at least he's comfortable now. We can have a chiropractor work on him now and we have a better chance of getting that vertebrae in place and keeping it there.
Date published: 2019-08-12
Rated 5 out of 5 by from Super picky horse will eat this My vet suggested I supplement both of my horses magnesium. I was using this but wanted a bigger size and it was out of stock at the time so I bought the 60% Magnesium from HorseTech. The texture was different and even with a small amount in their feed neither one of my horses will touch it. They will both eat magneium mixed in their mash with no problem, thank goodness! I won't be buying anything else.
Date published: 2019-08-02
Rated 5 out of 5 by from Glad to have found this :-) Purchased this to help an older gelding that we have with some sore muscles. We were purchasing Nature Valley or something that way from the local grocer and so far this has been doing the exact same thing it was. The price is great and very affordable! The shipping was quick. I will certainly be buying more when the time comes. So glad I dug a little deeper and found this! Thanks :-)
Date published: 2019-06-24
Rated 4 out of 5 by from Using for a horse that had been traumatised Using in conjunction with Taurine. Working well so far
Date published: 2019-05-31
Rated 5 out of 5 by from So far, so good! Just began using this supplement about a week ago on my guy so still waiting to assess for benefits. I have to say...good price, easy checkout and quick shipment. Uckele also sent me a free bag of treats which was a very nice touch. I would definitely order from them again!
Date published: 2019-01-15
Rated 5 out of 5 by from Mag Ox - I'll Never Be Without It Love this product! It is the main ingredient in Quiessence and Remission at a fraction of the cost. Have used this supplement for years with our miniatures/Shetlands, breeds that are usually prone to insulin resistance and cresty necks. Our horses are healthy and happy. We always get compliments how great they look. Remember to always consult your veterinarian before beginning any supplement in your horse's diet.
Date published: 2018-11-15
Rated 5 out of 5 by from Helpful for sensitive and IR horses Supplementing With MgO has helped a retiree who was overly sensitive to touch, and also 2 Insulin Resistant retirees. I supplement to have a 2:1 Ca:Mg ratio in their diet. It's great to have a concentrated and affordable Magnesium supplement available.
Date published: 2018-09-03
Rated 5 out of 5 by from magnesium oxide so far this is proving to very effective and at a reasonable cost
Date published: 2018-07-09
Rated 5 out of 5 by from Easy and affordable I got this for my Thoroughbred mare when I suspected her of being Mg deficient due to how much she sweats. This was the most cost effective way I found to supplement her Mg intake. I just did some math and added the appropriate amount to her electrolyte mix, and she's like a different horse now. Much more happy and relaxed.
Date published: 2018-07-08
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