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Magnesium - Feed Ingredient

Magnesium is an essential mineral required for numerous physiological functions in horses. It plays a critical role in muscle contraction, nerve transmission, enzyme activity, and energy metabolism. As a macromineral, magnesium is necessary for maintaining normal neuromuscular function and supporting overall metabolic processes.

In equine nutrition, magnesium is commonly included in feed formulations and supplements to ensure adequate dietary intake. Deficiency in magnesium can lead to symptoms such as nervousness, muscle tremors, and poor coordination. While magnesium is naturally present in forages, supplementation may be necessary for horses with increased needs. Common supplemental sources include magnesium oxide, magnesium sulfate, and magnesium carbonate, each varying in bioavailability and digestibility

The following equine feeds, supplements and products contain Magnesium as an ingredient.

Feeds, Supplements & Products
AminoTrace+ Vitamin and Mineral Supplement (Mad Barn)
Hoof HealthHoof Health
Metabolic SyndromeMetabolic Syndrome
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
AminoTrace+ by Mad Barn is a complete, balanced equine mineral and vitamin supplement designed for horses with metabolic concerns. It is ideal for horses with IR, PPID, or high iron in the diet.
MagneChrome (Mad Barn)
AntioxidantAntioxidant
HealthHealth
HerbHerb
Metabolic SyndromeMetabolic Syndrome
MagneChrome from Mad Barn (formerly sold under the name IR Supplement) is a magnesium and chromium supplement for IR Horses. This supplement provides antioxidant and anti-inflammatory support which is critical for horses with metabolic conditions such as insulin resistance, laminitis and Cushing’s Syndrome
Magnesium Oxide (Mad Barn)
CalmingCalming
HealthHealth
IngredientIngredient
MuscleMuscle
Magnesium Oxide is a concentrated source of mineral magnesium that can be added to equine diets. Magnesium supplementation has been shown to have a calming effect in nervous horses, as well as support proper muscle function.
Natural E/Organic Se (Mad Barn)
AntioxidantAntioxidant
Organic Trace MineralsOrganic Trace Minerals
RecoveryRecovery
VitaminsVitamins
Natural E/Organic Se is a pelleted supplement providing organic Selenium yeast and natural Vitamin E. These two nutrients are important antioxidants that support muscle function and anti-inflammatory pathways.
Omneity P – Pellets – Vitamin & Mineral Supplement (Mad Barn)
Gut HealthGut Health
Hoof HealthHoof Health
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
Ration BalancerRation Balancer
Omneity Pellets is a balanced mineral and vitamin supplement for horses in a palatable pellet form. It provides 100% organic trace minerals, complete B-vitamin fortification, added Vitamin E, yeast and digestive enzymes.
Omneity Premix – Vitamin & Mineral Supplement (Mad Barn)
Hoof HealthHoof Health
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Omneity Premix is a balanced mineral and vitamin supplement for horses providing 100% organic trace minerals, complete B-vitamin fortification, added Vitamin E, yeast, and digestive enzymes.
Performance XL: Electrolytes (Mad Barn)
Competition HorsesCompetition Horses
ElectrolyteElectrolyte
PerformancePerformance
StaminaStamina
Performance XL: Electrolytes by Mad Barn is a scientifically formulated equine electrolyte supplement designed to support athletic performance and workout recovery. It contains an ideal blend of natural minerals and vitamins to promote hydration status and muscle function.
Visceral+ (Mad Barn)
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
ProbioticProbiotic
UlcersUlcers
YeastYeast
Visceral+ by Mad Barn is a pelleted supplement to be used for horses with gastric health concerns. It is designed to maintain stomach and hindgut health and to support the immune system.
Complete Horse Pellets w/ Roughage (Bartlett Milling) [Discontinued]
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
VitaminsVitamins
Bartlett Complete Horse Pellets with Roughage is a 12% protein and 2.5% fat feed formulated for pleasure horses. Calories are provided from wheat middlings, alfalfa meal, soybean hulls, and ground corn.
Complete Performer (Barastoc)
EnergyEnergy
JointsJoints
NutrientsNutrients
UlcersUlcers
Complete Performer from Barastoc is a feed that has high fiber and high palatability. It is meant to provide relief from ulcers, contribute to joint health, and is a source of slow releasing energy.
Complete Plus HA (Basic Equine Nutrition)
Amino AcidAmino Acid
Hoof HealthHoof Health
JointsJoints
NutrientsNutrients
Complete Plus HA is an equine joint supplement that provides a combination of minerals, vitamins and nutraceuticals. It contains hyaluronic acid, MSM, glucosamine, biotin, amino acids and flax.
Complete Supplement Pellets (Ritchie Smith – Harmony)
HealthHealth
NutrientsNutrients
NutritionNutrition
Ration BalancerRation Balancer
Complete Supplement Pellets from Ritchie Smith's Harmony is a vitamin, mineral, hoof, and gut supplement. Complete Supplement Pellets are intended for horses on forage-based diets, or horses with metabolic issues.
Complex 40 (Technavet)
HealthHealth
ImmunityImmunity
Mineral BalanceMineral Balance
VitaminsVitamins
Complex 40 is a vitamin and mineral supplement for horses. Complex 40 contains trace minerals and is intended to support immune response, collagen production and joint health.
Conditioning Fibre (Spillers Feeds)
Coat QualityCoat Quality
FatFat
FiberFiber
ToplineTopline
Conditioning Fibre from Spillers Feed is high in oil and low in starches and sugars. This feed is intended to calm horses and ponies, develop topline, and improve coat quality.
Conditioning Mix (Red Mills)
Complete FeedComplete Feed
Coat QualityCoat Quality
ToplineTopline
Weight IssuesWeight Issues
Conditioning Mix from Red Mills is an oat-free feed intended for horses needing extra condition and topline. This feed is meant to support weight gain, coat condition, and bone integrity.
Conditioning Supplement (Masterfeeds)
Caloric EnergyCaloric Energy
ExerciseExercise
PerformancePerformance
ToplineTopline
Masterfeeds Conditioning Supplement is an equine supplement designed for improved performance, weight gain and coat condition. It provides fat, protein, vitamins, macrominerals, and organic trace minerals. This supplement can be used to top-dress complete feeds or as a stand-alone vitamin and minerals balancer.
Convalescent Muesli (Dodson & Horrell)
Complete FeedComplete Feed
DigestionDigestion
GrainsGrains
RecoveryRecovery
Convalescent Muesli by Dodson & Horrell is intended for horses and ponies at rest or in recovery. It contains yeast to support digestion and gut health and QLC antioxidants for immune support.
Cool ‘N’ Conditioning Cubes (Red Mills)
Competition HorsesCompetition Horses
EnergyEnergy
NutrientsNutrients
NutritionNutrition
Cool 'N' Conditioning Cubes by Red Mills is intended horses and ponies in light to heavy work, those travelling and prone to stress, breeding stock, and young stock. It contains 12.25% protein, 7% fat, and 20% fibre.
Cool ‘N’ Cooked Mix (Red Mills)
EnergyEnergy
GrainsGrains
NutritionNutrition
RecoveryRecovery
Cool 'N' Cooked Mix from Red Mills is an oat-free feed. This cereal-based feed is intended for performance horses and horses in recovery. It contains cereals such as barley, maize, and wheat flakes.
Cool + Zen (Durwell Equine Naturals)
CalmingCalming
PerformancePerformance
RecoveryRecovery
StressStress
Cool + Zen by Durwell Equine Naturals is a calming supplement containing magnesium, ashwagandha root extra and L-theanine. It is intended to promote calm and focus in horses experiencing stress.
Cool Command Senior Horse (Hubbard Feeds)
Coat QualityCoat Quality
DigestionDigestion
JointsJoints
SeniorSenior
Cool Command Senior Horse by Hubbard is a higher fat complete feed intended for senior horses with dental issues or joint health concerns. It contains 14% protein and 8% fat, with added MSM, chondroitin sulfate and glucosamine.
Cool Feed Cubes (Red Mills)
Easy KeeperEasy Keeper
GrainsGrains
NutrientsNutrients
NutritionNutrition
Cool Feed Cubes from Red Mills is intended for horses in light to moderate work. It is meant to support muscle function, bone integrity, and coat quality. This feed contains 10% protein, 12% fiber, and 3.3% fat.
Cool Fusion (Lifeline)
EnergyEnergy
FatFat
FiberFiber
NutritionNutrition
Cool Fusion by Lifeline is a high-fat, high-fiber feed formulated for performance horses and stallions. This feed contains 12% protein, 12% fat, and 14% fiber.
Cool Mix (Havens Horsefeed)
BroodmareBroodmare
CalmingCalming
Caloric EnergyCaloric Energy
StallionStallion
Cool Mix by Havens Horsefeed is an alfalfa-based muesli feed with slow-releasing energy content for nervous horses. It contains several grains, soybean hulls, and added vitamins and minerals.
Cool Mix (Spillers Feeds)
Caloric EnergyCaloric Energy
FiberFiber
GrainsGrains
NutritionNutrition
Cool Mix from Spillers Feed is a textured feed best suited for horses and ponies in low to medium work. This feed contains a variety of cereals such as barley, maize, and peas.
Cool Time (Capstone Horse Feed)
DigestionDigestion
EnergyEnergy
NutritionNutrition
PerformancePerformance
Cool Time by Capstone Horse Feed is a high energy, oat-free feed intended for high performance horses that are prone to tying up, excitability and excessive sweating.
Cool Vitality (Mitavite)
Gut HealthGut Health
NutritionNutrition
PerformancePerformance
Weight IssuesWeight Issues
Cool Vitality by Mitavite is a muesli intended to improve condition in horses by providing cool energy.
Copper Top-Up Cubes (Red Mills)
GrainsGrains
Mineral BalanceMineral Balance
NutritionNutrition
PerformancePerformance
Copper Top-Up Cubes from Red Mills is intended for horses in moderate to heavy work, broodmares, stallions, and youngstock. This feed is meant to support performance, stamina, coat condition, and hoof quality.
Country Acres 12% Pelleted Horse Feed Hi Fat (Purina Mills)
FatFat
HealthHealth
NutrientsNutrients
NutritionNutrition
Country Acres 12% Pelleted Horse Feed Hi Fat by Purina Mills is a pelleted feed containing vitamins and minerals. It is intended for all horse types.
Country Feeds Complete (Nutrena)- [Discontinued]
Complete FeedComplete Feed
EnergyEnergy
NutritionNutrition
ProteinProtein
Country Feeds Complete is a high fibre complete feed designed to provide 12% protein, 3% fat, and 22% NSC. It is marketed as a hay replacement.
CR ProFibre Crunch (Trouw Nutrition)
Complete FeedComplete Feed
FiberFiber
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
CR ProFibre Crunch is a mixed high fibre pellet and extruded feed with less than 10% NSC content. Energy sources include soy hulls, alfalfa, and beet pulp. ProFibreCrunch also contains flax as a source of omega-3 fatty acids.
Critical Care Metabolic Support (Natural Horse Vet)
MetabolismMetabolism
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
VitaminsVitamins
Critical Care Metabolic Support by Natural Horse Vet is a powdered supplement intended to support horses with insulin resistance, proper weight management, and thyroid function.
Crystalyx Stable-Lyx (Masterfeeds)
Mineral BalanceMineral Balance
NutrientsNutrients
ProteinProtein
VitaminsVitamins
Crystalyx Stable-Lyx is a free-choice mineral and vitamin supplement in a molasses block format for herd-feeding horses. It is a nutrient dense formula designed for all classes of horses.
Crystalyx Sweet 14% (Masterfeeds)
FlavorFlavor
Mineral BalanceMineral Balance
ProteinProtein
VitaminsVitamins
Crystalyx Sweet 14% is a free-choice mineral and vitamin block intended for use when beef cattle, sheep, goats, and equines are grazed in common pastures.
Cushcare Condition (Dodson & Horrell)
Complete FeedComplete Feed
HerbHerb
Metabolic SyndromeMetabolic Syndrome
Weight IssuesWeight Issues
Cushcare Condition by Dodson & Horrell is a pelleted feed high in fat, B vitamins, carotene, and QLC antioxidants. This feed supports weight gain and condition and has an NSC value of 11.44%.
Cushinaze (NAF Equine)
ImmunityImmunity
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
NutritionNutrition
Cushinaze by NAF Equine is a powdered immune supplement that intends to support vitality, provide support of the pituitary gland and gut function.
DAC Colt Grower (DAC)
Amino AcidAmino Acid
FoalFoal
GrowthGrowth
YeastYeast
Colt Grower by DAC provides vitamins and minerals for young horses. A proper vitamin and mineral balance is essential for development, as well as hoof and coat quality.
Daily Balancer (Spillers Feeds)
Amino AcidAmino Acid
NutrientsNutrients
Ration BalancerRation Balancer
VitaminsVitamins
Daily Balancer from Spillers Feed is cereal grain-free, low in sugar and starch, and has no added iron. This feed is intended for horses and ponies fed a forage-based diet.
Daily Combo (Empire Research)
Competition HorsesCompetition Horses
DigestionDigestion
IngredientIngredient
YeastYeast
Daily Combo from Empire Research is an equine digestion supplement. Daily Combo is formulated with vitamins, minerals, prebiotics, probiotics and yeast. This supplement is intended to support horses' gut function.
Daily Essentials Pellets (Formula 707)
GrowthGrowth
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Daily Essentials Pellets by Formula 707 is an pelleted equine vitamin and mineral supplement intended to support overall health in all classes of horses.
Daily Start Probiotic (Doctor’s Choice Supplements)
Feed EfficiencyFeed Efficiency
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
Daily Start Probiotic by Doctor's Choice Supplements is a pre/probiotic supplement intended to support gut health. It is designed for broodmares and horses that have difficulty keeping weight.
Daily Vitamins and Minerals (Dodson & Horrell)
Easy KeeperEasy Keeper
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Daily Vitamins and Minerals from Dodson & Horrell is intended for use in leisure and easy keeper horses and ponies. This supplement provides a complete range of vitamins and minerals to balance the horse's diet.
DailyWerks HD (HorseTech)
Hoof HealthHoof Health
JointsJoints
PerformancePerformance
Ration BalancerRation Balancer
DailyWerks HD by HorseTech is a powdered ration balancer intended to support hoof and joint health in horses in heavy work.
DailyWerks LD (HorseTech)
HealthHealth
Hoof HealthHoof Health
JointsJoints
Ration BalancerRation Balancer
DailyWerks LD by HorseTech is a daily ration balancer intended to provide hoof and joint support.
Decade Sprint Extreme (Poulin Grain)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
Mineral BalanceMineral Balance
VitaminsVitamins
Decade Sprint Extreme by Poulin Grain is a textured feed for performance horses and broodmares. It provides 13% protein, 8% fat and 10% fiber.
DeStress Equine (Hoffman’s Horse Products)
MuscleMuscle
NutrientsNutrients
StressStress
Weight IssuesWeight Issues
DeStress Equine from Hoffman's Horse Products is a pelleted supplement that is meant to help with the stress of being handling or transported. It contains electrolytes, amino acids, and aims to reduce weight and increase muscle development.
Developer Ration (Hoffman’s Horse Products)
BroodmareBroodmare
FoalFoal
Grain FreeGrain Free
GrowthGrowth
Hoffman's Developer Ration is a pelleted feed for weanlings, growing horses up to two years of age, and pregnant broodmares. This feed contains 17% protein, 5.5% fat, 17.5% NSC, and provides a mix of organic and inorganic trace minerals.
Diamond Balancer (Triple Crown)
Easy KeeperEasy Keeper
Grain FreeGrain Free
Metabolic SyndromeMetabolic Syndrome
NutrientsNutrients
Diamond Balancer by Triple Crown is a grain-free pelleted balancer formulated for adult horses with metabolic concerns. It provides 14% protein, 3% fat, and 15% fiber (as fed).
Diamond Perform (Triple Crown)
AntioxidantAntioxidant
FatFat
Gut HealthGut Health
PerformancePerformance
Diamond Perform from Triple Crown is a pelleted feed that is high in fat and fiber. It is intended for performance horses and is meant to assist with gut health and immunity.
Diamond Senior (Triple Crown)
FatFat
FiberFiber
NutrientsNutrients
SeniorSenior
Diamond Senior by Triple Crown is a high-fat, high-fiber feed specifically formulated for senior horses. It includes beet pulp as a fermentable fiber source to support optimal calorie intake.
Diamond Smart Chopped Forage (Triple Crown)
ForageForage
HealthHealth
PerformancePerformance
SeniorSenior
Diamond Smart Chopped Forage by Triple Crown is an orchard and alfalfa hay blend intended to provide a complete diet for performance and mature horses. It's chopped forage format is designed to support easier chewing and swallowing.
Diamond Smart Cube (Triple Crown)
DentalDental
ForageForage
PerformancePerformance
SeniorSenior
Diamond Smart Cubes by Triple Crown is a cube containing beet pulp, timothy hay and orchard hay. It is intended for performance and mature horses.
Diamond Smart Pellet (Triple Crown)
ForageForage
HealthHealth
PerformancePerformance
SeniorSenior
Diamond Smart Pellet by Triple Crown is a Teff hay pellet fortified with vitamins and minerals. It is intended for performance and mature horses.
Digest Ultra (Greenline)
Competition HorsesCompetition Horses
DigestionDigestion
Gut HealthGut Health
HealthHealth
Digest Ultra from Greenline is intended to help performance horses maintain normal digestive function. Digest Ultra is a powdered gut health supplement.
Direct Action Supplement (DAC)
Amino AcidAmino Acid
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Direct Action is a multivitamin and trace mineral concentrate for horses. This low feeding rate supplement is formulated to provide added vitamins, minerals, and amino acids required in the equine diet.
Distinguished (Hallway)
DigestionDigestion
Gut HealthGut Health
NutritionNutrition
SeniorSenior
Distinguished is a textured feed from Hallway feeds for senior horses fortified with Stamm 30, containing 14% protein and 10% fat. Distinguished uses soluble fibre from beet pulp, soy hulls, and chopped hay. It also contains added oil for energy.
DJ (Platinum Performance)
JointsJoints
Mineral BalanceMineral Balance
ProbioticProbiotic
VitaminsVitamins
Platinum Performance® DJ by Platinum Performance is a powdered vitamin and mineral supplement intended to support joint and digestive health. It contains ingredients such as flaxseed, rice bran, clay, yeast, and a blend of vitamins and minerals.
Double Play (Equi-lete)
Bone HealthBone Health
Gut HealthGut Health
ImmunityImmunity
PerformancePerformance
Double Play by Equi-lete is a vitamin and mineral supplement intended to support gastric health, performance, and the growth of bone and cartilage in performance horses.

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