Key Takeaways
Magnesium is essential for over 300 biochemical reactions in a horse’s body, including muscle and nerve function.
Signs of magnesium deficiency in horses include muscle tremors, nervousness, and poor performance.
Top available magnesium supplements include Mad Barn’s Omneity® Premix, AminoTrace+, HorseHerbs Magnesium Oxide Powder, MagRestore® by Performance Equine, and AniMed Epsom Salts.
Proper supplementation can improve muscle function, mood, and overall well-being in horses.
It’s crucial to balance magnesium with other minerals in the horse’s diet to avoid imbalances.
Why Magnesium is Crucial for Horses

“MAGNESIUM DEFICIENCY” from www.equineroyalenz.com
Magnesium is a vital mineral for horses, playing a crucial role in over 300 biochemical reactions within their bodies. It is essential for proper nerve and muscle function, energy metabolism, and enzyme activity. Horses, especially those that are overweight or have muscle issues, often require additional magnesium to maintain optimal health.
Besides that, magnesium helps with calcium mobilization, which supports healthy bones and overall well-being. Without adequate magnesium, horses can experience a range of issues, from muscle tremors to poor performance and nervous behavior.
Signs Your Horse Needs More Magnesium
Recognizing the signs of magnesium deficiency in horses is key to addressing the issue promptly. Some common symptoms include:
Muscle tremors or twitching
Nervousness or anxiety
Poor performance
Difficulty maintaining a calm demeanor
Muscle cramping or stiffness
If you notice any of these signs, it may be time to consider magnesium supplementation for your horse.
Top 5 Magnesium Supplements
Now, let’s dive into the top five magnesium supplements that can help address muscle issues in overweight horses. Each supplement has its unique features, benefits, and potential drawbacks, so it’s essential to choose the one that best fits your horse’s needs.
Mad Barn’s Omneity® Premix

Mad Barn’s Omneity® Premix is a comprehensive mineral and vitamin supplement designed to meet the nutritional needs of horses. It contains 2.6% magnesium in the form of highly absorbable magnesium oxide, making it an excellent choice for most horses.
Features and Benefits
This supplement provides a balanced mix of essential minerals and vitamins, ensuring that your horse receives complete nutritional coverage. The magnesium content helps support muscle function, nerve transmission, and overall well-being.
Pros and Cons
Here are some of the pros and cons of using Mad Barn’s Omneity® Premix:
Pros: Comprehensive nutritional coverage, highly absorbable magnesium, supports overall health.
Cons: May not be suitable for horses with specific dietary restrictions.
Customer Reviews
Many horse owners have reported positive results with Mad Barn’s Omneity® Premix. They have noticed improvements in their horses’ muscle function, mood, and overall health. One customer mentioned,
“Since starting my horse on Omneity® Premix, I’ve seen a significant improvement in his performance and calmness.”
AminoTrace+ for Metabolic Health
AminoTrace+ is another excellent option for horses with metabolic issues. This supplement contains a higher magnesium content at 5.5%, making it ideal for horses that require additional magnesium to support their health.
Features and Benefits
AminoTrace+ is designed to support metabolic health, particularly in overweight horses. The higher magnesium content helps improve insulin sensitivity, muscle function, and overall well-being.
Supports metabolic health
High magnesium content (5.5%)
Improves insulin sensitivity
Enhances muscle function
Pros and Cons
Here are some of the pros and cons of using AminoTrace+:
Pros: High magnesium content, supports metabolic health, improves insulin sensitivity.
Cons: May not be suitable for all horses, especially those without metabolic issues.
Customer Reviews
Horse owners who have used AminoTrace+ have reported noticeable improvements in their horses’ health. One satisfied customer shared,
“AminoTrace+ has made a huge difference for my overweight horse. His muscle function and overall health have improved significantly.”
Magnesium Oxide Powder

Magnesium Oxide powder is a popular choice for horse owners looking to supplement magnesium due to its high concentration and affordability. This form of magnesium is readily absorbed and can be easily mixed into your horse’s feed.
Features and Benefits
One of the primary benefits of magnesium oxide powder is its high concentration, allowing you to provide an effective dose with a small amount. Additionally, it is one of the most cost-effective options available, making it accessible for many horse owners.
High concentration of magnesium
Cost-effective
Easily absorbed
Simple to mix into feed
Pros and Cons
Here are some of the pros and cons of using magnesium oxide powder:
Pros: High concentration, cost-effective, easily absorbed.
Cons: May not be as palatable for some horses, requires careful dosing.
Customer Reviews
Many horse owners have found success with magnesium oxide powder. One customer noted,
“Magnesium oxide powder has been a game-changer for my horse’s muscle health. It’s affordable and easy to use.”
MagRestore by Performance Equine

MagRestore by Performance Equine is specifically formulated for superior bio-availability and palatability. This supplement is designed to support horses with muscle issues and overall well-being.
Features and Benefits
MagRestore is known for its high bio-availability, meaning that the magnesium is easily absorbed and utilized by the horse’s body. This makes it an excellent choice for horses with muscle issues or those that are prone to nervousness and anxiety.
High bio-availability
Palatable for horses
Supports muscle function
Helps with nervousness and anxiety
Learn more about the benefits of MagRestore.
Pros and Cons
Here are some of the pros and cons of using MagRestore by Performance Equine:
Pros: High bio-availability, palatable, supports muscle function.
Cons: Can be more expensive than other forms of magnesium, may require more frequent dosing.
Customer Reviews
Horse owners who have used MagRestore by Performance Equine have seen significant improvements in their horses’ health. One owner shared,
“MagRestore has helped my horse immensely. He’s calmer and his muscle issues have improved dramatically.”
Epsom Salts (Magnesium Sulfate)

Epsom salts, or magnesium sulfate, are another option for supplementing magnesium in horses. While commonly used for soaking hooves, Epsom salts can also be used as a dietary supplement to provide magnesium.
Features and Benefits
Epsom salts are widely available and inexpensive, making them a convenient option for horse owners. They can be used both topically and internally to provide magnesium, although it’s essential to follow dosing guidelines carefully.
Widely available
Inexpensive
Can be used topically and internally
Provides magnesium and sulfate
Pros and Cons
Here are some of the pros and cons of using Epsom salts:
Pros: Affordable, versatile, provides additional sulfate.
Cons: Can cause diarrhea if overused, less palatable for some horses.
Customer Reviews
Many horse owners appreciate the versatility and affordability of Epsom salts. One owner remarked,
“Epsom salts have been a great addition to my horse’s diet. They’re affordable and effective.”
How to Properly Supplement Magnesium
Properly supplementing magnesium is crucial to avoid any potential issues and ensure your horse receives the maximum benefits. Here are some guidelines to follow:
Dosage Guidelines
When it comes to magnesium supplementation, starting with the lowest effective dose is always best. Gradually increase the dose based on your horse’s needs and response. A typical maintenance dose for an average-sized horse is between 1 to 10 grams of magnesium per day.
Forms of Magnesium
Different forms of magnesium have varying levels of bio-availability and absorption rates. Magnesium oxide, magnesium sulfate (Epsom salts), and chelated forms like magnesium glycinate are all options to consider. Choose the form that best suits your horse’s needs and preferences.
Balancing Magnesium with Other Minerals
It’s essential to balance magnesium with other minerals in your horse’s diet to avoid imbalances. For example, excessive calcium can interfere with magnesium absorption. Therefore, ensure your horse’s diet is well-rounded and provides all the necessary nutrients in the right proportions.
FAQs

How can I tell if my horse is magnesium deficient?
Look for signs such as muscle tremors, nervousness, poor performance, and difficulty maintaining a calm demeanor. If you notice any of these symptoms, consider consulting a veterinarian and possibly supplementing with magnesium.
What are common symptoms of muscle issues in overweight horses?
Overweight horses with muscle issues may show signs of muscle stiffness, cramping, or twitching. They might also exhibit poor performance and difficulty in maintaining a calm demeanor.
How long does it take to see improvement with magnesium supplements?
The time it takes to see improvement can vary depending on the horse and the severity of the deficiency. Some horses may show noticeable improvements within a few days, while others might take a few weeks.
Are there any side effects to magnesium supplementation?
When used appropriately, magnesium supplementation is generally safe. However, excessive magnesium can cause diarrhea or loose stools. Always start with the lowest effective dose and consult a veterinarian if you have any concerns.
Can I combine different forms of magnesium for my horse?
Yes, you can combine different forms of magnesium, but it’s essential to ensure the total daily intake does not exceed recommended levels. Consult with a veterinarian to determine the best approach for your horse’s specific needs.
In conclusion, magnesium is a vital mineral for horses, especially those with muscle issues or those that are overweight. By understanding the signs of deficiency and choosing the right supplement, you can significantly improve your horse’s health and well-being. Remember to balance magnesium with other minerals in the diet and consult a veterinarian for personalized advice. For more information, you can read about the benefits of magnesium for horses.







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