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MagneChrome (formerly IR Supplement) is a pelleted formula with chromium yeast, magnesium, turmeric, CoQ10 and more. MagneChrome is designed to support normal glucose metabolism and regulate insulin production which is critical for horses with insulin resistance, laminitis and Cushing’s Syndrome (PPID). MagneChrome should be fed with our Omneity complete mineral and vitamin.

*This product is not available for shipment to California

* Based on a 500 kg (1100 lb) horse at a feeding rate of 100 grams per day
We stand behind our products to provide the best nutrition for your horse. No fillers, just research-backed ingredients. If your horse doesn't love this product, our Customer Happiness team is here to help or give you a refund guaranteed.
MagneChrome Supports:
  • Insulin Sensitivity
  • Metabolic Function
  • Energy Balance
  • Weight Management
  • Antioxidant Defenses
  • Laminitis Management
  • Healthy Skin & Hair
  • Overall Well-Being
  • Immune Function

Mad Barn’s MagneChrome (formerly IR Supplement) is a concentrated, pelleted formula that provides nutritional support for horses with insulin resistance, laminitis and metabolic syndrome.

MagneChrome contains high levels of chromium, magnesium and other beneficial ingredients that support healthy metabolism and blood sugar levels. It also contains nutrients and herbs that promote antioxidant defenses and inflammation regulation.

MagneChrome is not a complete mineral and vitamin and should be fed in conjunction with Omneity – Equine Mineral and Vitamin for best results.

Alternatively, our AminoTrace+ supplement is an all-in-one mineral and vitamin formula for horses with metabolic concerns.

What’s Inside MagneChrome?

MagneChrome contains a number of quality ingredients that are proven to support metabolic health:


  • Crucial mineral needed for healthy metabolic function; critical for the metabolism of carbohydrates, proteins, and fats.
  • If magnesium is low in the cell, carbohydrate metabolism is impaired and a reduced insulin response can be triggered
  • The magnesium content of the majority of equine feeds are consistently low – supplementation is very much needed for horses with metabolic syndrome.


  • An essential trace mineral imperative for energy utilization.
  • Glucose tolerance factor (GTF) is synthesized from dietary chromium and binds to insulin to enhance its action within the body.
  • Bio-ChromeTM is a premium, organic source of chromium for efficient delivery to tissues.

Coenzyme Q10

  • Natural antioxidant involved in energy metabolism in the cell’s mitochondria.
  • Research shows that Coenzyme Q10 can combat the effects of oxidative damage and reactive oxygen species.

Alpha-Lipoic Acid

  • Important natural antioxidant molecule that scavenges free radicals generated from metabolism and helps to maintain the integrity of cell membranes.
  • Has a synergistic effect with Coenzyme Q10.


  • Beneficial omega-3 fatty acid that decreases the production of inflammatory molecules in cells, resulting in better regulation of inflammation.
  • Marine algae source of DHA.


  • Contains curcumin, a compound considered to have anti-inflammatory and antioxidant properties.

You should always consult a qualified nutritionist before altering your feed program. Submit your horse’s diet for analysis online and one of our equine nutritionists will be happy to provide a complementary review.

Algal DHA2019-10-24T20:17:08-04:00

LG-MAX | Mad Barn USAAlgal DHA (LG-MAX) is a DHA supplement developed by Alltech that is derived from marine algae. It provides high levels of DHA comparable to fish oil without having a fishy smell or taste, so horses find it extremely palatable.

Sourcing DHA from algae is a more sustainable process than sourcing it from fish. There is estimated to be more than 800,000 species of algae, all with very high genetic diversity and extremely fast growth rates. Producing DHA from algae is also a much more efficient process than producing fish, as algae does not need to be fed animal products in order to grow.

The DHA produced in algae is an Omega-3 fatty acid that functions in the body as an anti-inflammatory, antioxidant and neurogenerative molecule, with increasing amounts of research proving the efficacy of its supplementation in the equine diet.


Calcium | Mad Barn USACalcium is a macromineral with well described roles in bones and teeth development in horses. Calcium and phosphorus are usually discussed together because bones store them in a 2:1 ratio of calcium-to-phosphorus. This ratio should also be attained in the diet.

While most of the calcium found in the horse’s body is in bone tissue, this mineral is also involved in certain enzymatic functions, cell membrane function, muscle contractions and blood coagulation. Calcium ions mobilized from bone are also important for transmitting nerve impulses.

Young horses, growing horses, lactating mares and late-gestation broodmares all have higher calcium requirements than typical adult horses. Severe calcium deficiency in horses causing noticeable symptoms such as “big head” is less common today than in the past. However, deficiency may occur when horses consume certain subtropical grasses that are high in oxalate which restricts calcium absorption.

Chamomile Flower2019-09-12T17:01:58-04:00

Chamomile Flowers | Mad Barn USAChamomile is the common name for several daisy-like plants of the Asteraceae family. It is an annual herb with white flowers and feathery leaves.

Chamomile flowers contain magnesium phosphate, calcium phosphate and potassium phosphates, which are thought to have calming and anti-inflammatory properties.

Very little is known about the effects of feeding chamomile to horses, however, there is some research on the effects of aromatherapy. In a recent equine study that evaluated the effects of aromatherapy on heart rate variability, vaporized chamomile essential oil had variable effects, with none reaching significance.

More research into the pharmacological activity that chamomile produces is required in order to further understand how to optimize their effects on horses.


Chromium | Mad Barn USAChromium is a micromineral that is widely used in horses with metabolic dysfunction because it has been shown to potentiate the effects of insulin. Mad Barn uses Biochrome in its supplements, which contains this mineral in the form of chromium polynicotinate. The chromium is surrounded by several niacin molecules which increase absorption.

Chromium helps horses maintain healthy blood glucose levels by increasing insulin’s ability to bind to its cellular receptor. This means that insulin can more effectively move glucose out of the bloodstream and into cells where it can serve as a source of energy.

Chromium supplementation has been shown to improve glucose tolerance and insulin sensitivity in horses. This is particularly important for overweight or obese horses who are at higher risk for insulin resistance. In addition, chromium helps regulate fat and protein metabolism and contributes to overall good metabolic health.

Chromium has also been shown to benefit performance horses by decreasing lactate levels during exercise.

Coenzyme Q102019-09-13T12:47:41-04:00

Coenzyme Q10 | Mad Barn USACoenzyme Q10 (CoQ10, ubiquinone) is a natural antioxidant that is involved in energy metabolism in the cell mitochondria. It plays several important roles in the body and is critical for the production of adenosine triphosphate (ATP) – the primary energy currency used within the body.

Horses are often supplemented with CoQ10 to support athletic performance, aerobic function, and to minimize recovery times following intense exercise. In a study on horses, supplementing with this nutrient was shown to increase slow-twitch muscle fibre activity by 40%.

This supplement also has a protective effect against cellular degeneration and muscle breakdown. Research shows that CoQ10 can combat the effects of oxidative damage and “reactive oxygen species” or free radical particles. It works synergistically with other antioxidants such as Vitamin C and Vitamin E.

Kelp Meal2022-11-07T12:03:45-05:00

Kelp Meal | Mad Barn USA

Kelp meal (seaweed) is a type of brown algae that contains several minerals including magnesium, potassium, iodine, calcium and iron. It is also a source of several vitamins, micro-nutrients and 20 different amino acids.

Kelp is commonly fed as an iodine supplement to support thyroid function.

Dried seaweed meal also contains high levels of polysaccharides, which may act as prebiotics in the hindgut.

Licorice Root2019-09-09T11:13:07-04:00

Licorice Root | Mad Barn USALicorice root is an herb that has long been used in Chinese medicine, said to promote overall well-being and vitality. It is very well documented by research and contains a number of active ingredients.

It is given to horses for a number of different uses, including for digestion support, a natural calming effect, fever and pain relief, and as a breathing aid and expectorant. Horses also enjoy the taste of licorice root extract when it is added to supplements.

Studies show that it can promote healing of ulcers and reduce irritation and inflammation in the gastrointestinal tract. It contains the natural anti-inflammatory compound Glycyrrhizinic Acid and is believed to influence the activity of the stress hormone cortisol in the body.

Lipoic Acid2019-09-09T14:05:37-04:00

Lipoic Acid | Mad Barn USALipoic Acid is an important natural antioxidant molecule that has a synergistic effect with Vitamin C, Vitamin E, and Coenzyme Q10. It is unique because it is both water- and fat-soluble. In research on horses, it has been shown to moderately reduce oxidative stress under conditions of light activity.

Researchers have examined the effects of this antioxidant on aging, exercise-induced stress and metabolic dysfunction. It is of particular interest to horse nutritionists for its potential to support performance in horses undergoing intense training or endurance exercise.

Lipoic Acid scavenges free radicals generated from metabolic processes and helps to maintain the integrity of cell membranes. It may also exert an anti-inflammatory effect and has been shown to help maintain normal blood sugar levels and reduce excess insulin levels. This is why it is often fed to insulin resistant horses.


Magnesium Oxide for Horses | Mad Barn USA

Magnesium is a macro-mineral that plays an important role in regulating nerve impulse transmission, protein synthesis, energy metabolism and enzyme activity. It is involved in over 300 different enzyme reactions in the horse’s body.

60% of the magnesium in the body is found in the bones and 40% is found in extracellular fluids and soft tissues.

As a supplement, it is best given in the form of inorganic magnesium oxide which has an absorption rate of approximately 56%.

Oat Hulls2023-06-12T18:07:18-04:00

Oat Bran | Mad Barn USA

Oat hulls are the protective outer layer or husk of the oat grain. They are removed while processing oat bran and other grain-based oat products. Oat hulls have limited nutritional value and are primarily used as a source of dietary fiber and as a pellet binder.

Oat hulls are primarily composed of indigestible fibers such as cellulose and hemicellulose. These fibers provide bulk to the diet and can help promote healthy digestion and gut motility. Oat hulls are low in non-structural carbohydrates (NSC), making them suitable for horses requiring a low-starch or low-sugar diet.

The presence of insoluble fiber in oat hulls also slows down the digestion and absorption of carbohydrates, leading to a more gradual release of glucose into the bloodstream. This can be beneficial for horses with insulin resistance or those requiring a diet that provides controlled energy release.


Turmeric | Mad Barn USATurmeric, Curcuma longa, is a flowering plant that is a member of the ginger family. Its roots are most commonly found dried and made into a powder, which has been used for many years in ancient Indian and Chinese medicines. Recently, it has been introduced in horse nutrition as a herbal supplement to assist in the management of pain and arthritis.

One of the active ingredients in turmeric is called curcumin, and it is considered to have anti-inflammatory and anti-oxidant properties. The substance is well-studied in humans, with many studies investigating the effectiveness of curcumin for diseases like cancer, diabetes, arthritis and Alzheimer’s, with some promising results.

Two in-vitro studies investigating potential anti-inflammatory effects of turmeric in horse tissues have been published, with some promise, but no in-vivo studies have been conducted. Therefore, the true efficacy of turmeric as an anti-inflammatory has not yet been established in horses, nor has an effective dose.

May support normal glucose metabolism and regulating insulin production.

Directions for Use:

Administer with feed. Provide daily.

Body Weight Scoops Dose
< 200 kg 1/2 scoop 50 g
200 – 500 kg 1 scoop 100 g
> 500 kg 1.5 scoops 150 g
1 scoop = 125 cc = 100 grams


Store in a cool, dry place, protected from direct sunlight. Keep tightly closed when not in use.

Do not use in pregnant or lactating animals.
Do not use in animals receiving other drugs, unless directed by a veterinarian.
Do not use in animals with bleeding disorders, unless directed by a veterinarian.
Do not use in animals with gastric ulceration.
Do not use in animals with thyroid disease, unless directed by a veterinarian.

Not for use in horses intended for food.

Shelf Life:

24 months from date of manufacture.

Per gram serving
Ingredients Per 100 G
Chromium from chromium enriched yeast 12 mg
Magnesium from magnesium oxide 10 g
IR Supplement
13 g
Contains not less than:
Kelp 2,000 mg
DHA 100 mg
Citric Acid 100 mg
DGL 100 mg
Chamomile 100 mg
Alpha-Lipoic Acid 100 mg
Turmeric 100 mg
CoQ10 10 mg

Ingredients: Magnesium Oxide, Alpha-Lipoic Acid, Coenzyme Q10, Turmeric, Biochrome (Chromium Enriched Yeast), DHA Algae, Kelp Meal, Licorice Root (DGL), Chamomile Flower, Citric Acid, Flavour.

Excipient Ingredients: Oat hulls

Register & manufactured by: Mad Barn Inc., Petersburg, ON, Canada.

Disclaimer: These statements have not been evaluated by Health Canada or the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.
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* Recommended serving size of 20 grams per 100 kg (220 lb) of body weight
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Disclaimer: Recommended feeding rate varies depending on your horse's condition and current diet. Consult with a nutritionist to determine the appropriate inclusion rate for your horse.

Customer Questions About This Product

    If I'm feeding my horse the IR supplement, should I give her extra magnesium?
  1. 0 votes
    Q If I'm feeding my horse the IR supplement, should I give her extra magnesium?
    A If you are feeding the IR supplement, there is no need to give extra magnesium.
  2. How does your IR supplement compare to feeding chromium and magnesium on their own?
  3. 0 votes
    Q How does your IR supplement compare to feeding chromium and magnesium on their own?
    A Our IR Supplement contains 9660 mg of magnesium and 11.7 mg chromium in each 100 gram serving, as well as a variety of other nutraceutical ingredients that provide additional nutritional support for horses with metabolic issues. It's much more than just a magnesium and chromium supplement.
  4. What is the best way to use the IR supplement? Do I need to feed it with anything else?
  5. 0 votes
    Q What is the best way to use the IR supplement? Do I need to feed it with anything else?
    A Our IR Pellet was developed to provide supplemental magnesium and chromium for horses with IR as these two minerals have been researched to assist with insulin regulation. We generally recommend that the horse be on a complete vitamin and mineral before supplementing with the IR Pellet.
  6. What kind of horses do you recommend the IR Supplement for and how does it work?
  7. 0 votes
    Q What kind of horses do you recommend the IR Supplement for and how does it work?
    A The IR supplement is a Magnesium and Chromium supplement with additional antioxidants and anti-inflammatory compounds to help with chronic, low-grade inflammation associated with EMS and IR. Magnesium and Chromium help control blood glucose. This should be considered supportive therapy and not a fix for EMS/IR. You should also test for ACTH levels with your vet and decide if Pergolide is needed to help control. If you need further information on EMS, the ECIR Group is an excellent resource.
  8. Is the IR supplement meant to be used on its own or added to Omneity?
  9. 0 votes
    Q Is the IR supplement meant to be used on its own or added to Omneity?
    A The IR supplement is meant to be fed with the Omneity Equine Vitamin & Mineral supplement.  The IR supplement is not a complete mineral and vitamin.  If you want to streamline the supplements you feed to your horse, we have just introduced AminoTrace+.  It was developed in conjunction with the ECIR group and is meant for insulin resistant horses.  You would not need to feed the IR supplement with this.

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