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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.
1:1 Free Choice (Dynamite)
HealthHealth
ImmunityImmunity
Mineral BalanceMineral Balance
VitaminsVitamins
1:1 Free Choice from Dynamite is a free choice vitamin and mineral supplement for horses. This supplement contains a ration of one part calcium to one part phosphorus, intended for horses consuming legume hay.
10% Racepower Cubes (Dodson & Horrell)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
NutritionNutrition
PerformancePerformance
10% Racepower Cubes is a feed designed for racehorses or horses in training requiring a lower protein and starch content. It includes fibre to help with digestion, vitamins and minerals to help with nutrient absorption, and yeast for optimal gut function.
101 Diet Balancer (Stride Animal Health)
Amino AcidAmino Acid
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
VitaminsVitamins
101 Diet Balancer is a vitamin and mineral supplement intended to balance forage- and grain-based diets. This concentrated supplement has a lower NSC content and contains organic trace minerals, yeast, and digestive enzymes.
11% Sweet Pellets (Manna Pro)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
FlavorFlavor
NutritionNutrition
11% Sweet Pellets from Manna Pro is a fortified pelleted feed for horses, cattle, and goats at maintenance. 11% Sweet Pellets contains 11% crude protein, 3% crude fat, and 24% crude fibre.
12-12 Performance Horse (Matrix)
ExerciseExercise
FatFat
PerformancePerformance
ProteinProtein
12-12 Performance Horse by Matrix is a textured feed that provides high fat (12%) and moderate protein (12%) intended for performance horses.
12/8 Horse Pellets (West Feeds)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
ProteinProtein
StaminaStamina
12/8 Horse Pellets by West Feeds is a feed for horses requiring a higher energy diet with 12% protein and 8% fat content. This feed also includes inorganic vitamin and mineral additives and some added soybean oil.
12% Horse Feed (Producer’s Pride)
Complete FeedComplete Feed
HealthHealth
NutrientsNutrients
ProteinProtein
12% Horse Feed by Producer’s Pride is a complete pelleted feed intended for adult horses. It contains 12% protein and 2.5% fat with wheat middlings, corn and peanut hulls as the main ingredients.
12% Light Performance Pellet (Masterfeeds)
Complete FeedComplete Feed
Easy KeeperEasy Keeper
NutritionNutrition
ProteinProtein
Masterfeeds 12% Light Performance (pellet) is a horse feed intended for maintenance and light performance horses. It is a basic ration with low fat and moderate fibre content.
12% Maintain Horse Pellet (Minor Bros)
Easy KeeperEasy Keeper
HealthHealth
NutrientsNutrients
NutritionNutrition
12% Maintain Horse Pellet from Minor Bros is a pelleted feed containing 12% crude protein. This feed is intended for easy keepers or horses who are in light to moderate work.
12% Max Performance (Quality Feeds)
Easy KeeperEasy Keeper
GrowthGrowth
HealthHealth
PerformancePerformance
12% Max Performance by Quality Feeds is a textured sweet feed intended to support growth and performance in maintenance, light work and breeding horses.
12% Pleasure Horse (Sweet Country Feeds)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
GrainsGrains
NutritionNutrition
Sweet Country 12% Pleasure Horse is a textured feed intended for mature horses. It provides 12% crude protein in a grain-based formula containing corn, oats, wheat middlings and soybean meal.
12% Select Horse (Sweet Country Feeds)
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
Organic Trace MineralsOrganic Trace Minerals
12% Select Horse by Sweet Country Feeds is a grain-based feed that provides 12% protein and 4% fat. It contains added vitamins, as well as inorganic and organic trace minerals.
12% Sweet Feed (Producer’s Pride)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
FiberFiber
FlavorFlavor
Producer’s Pride 12% sweet feed is a textured feed intended for horses and ruminants. It provides 12% protein and a high-inclusion of molasses to encourage palatability.
12% Textured (Sweet Country Feeds)
Complete FeedComplete Feed
FlavorFlavor
HealthHealth
NutritionNutrition
12% Textured by Sweet Country Feeds is designed to be a palatable feed that provides 12% protein and 2.5% fat. It contains added vitamins and a blend of organic and inorganic minerals.
14% Max Performance (Quality Feeds)
EnergyEnergy
FoalFoal
PerformancePerformance
StallionStallion
14% Max Performance by Quality Feeds is a textured sweet feed containing oats, corn oil and soybean oil. It is intended for foals, mares, stallions and performance horses.
14% Performance (Running Horse)
Complete FeedComplete Feed
GrowthGrowth
LactationLactation
PerformancePerformance
Running Horse Performance is a texturized 14% protein and 6% fat feed formulated for performance, breeding and growing horses. It provides a higher energy density for equine athletes.
14% Performance Formula (Triple Crown) – [Discontinued]
ExerciseExercise
FlavorFlavor
PerformancePerformance
Weight IssuesWeight Issues
Triple Crown 14% Racing Formula is a discontinued feed which was a high-fat, high-energy feed containing a blend of grains and fat sources. It was designed for young performance horses, broodmares, breeding stallions, yearlings and weanlings.
14% Racepower Cubes (Dodson & Horrell)
Competition HorsesCompetition Horses
ExerciseExercise
NutritionNutrition
PerformancePerformance
14% Racepower Cubes is a feed designed for racehorses and horses in training requiring a higher protein content and a lower starch content. It includes fibre to help with digestion, vitamins and minerals to help with nutrient absorption, and yeast for optimal gut function.
14% Racepower Muesli (Dodson & Horrell)
Competition HorsesCompetition Horses
FiberFiber
GrainsGrains
PerformancePerformance
14% Racepower Muesli is a feed designed for racehorses and horses in training requiring a higher protein content and a lower starch content. It includes fibre to help with digestion, vitamins and minerals to help with nutrient absorption, and yeast for optimal gut function.
14% Racing Formula (Triple Crown)-[Discontinued]
EnergyEnergy
ExerciseExercise
NutritionNutrition
PerformancePerformance
Triple Crown 14% Racing Formula is a high calorie textured feed containing a blend of grains with soybean meal and molasses. It is intended for young performance horses, broodmares, breeding stallions and growing foals.
14% Senior Textured (Tribute)
Complete FeedComplete Feed
FatFat
NutritionNutrition
SeniorSenior
Tribute 14% Senior Textured is a complete feed for mature horses composed of steam-rolled oats, barley, dried beet pulp, extruded whole soybeans, and dehydrated alfalfa meal.
14% Soy-Free All Stock Pellet (Non-GMO) (Sweet Country Feeds)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
14% Soy-Free All Stock Pellet by Sweet Country Feeds is a pelleted feed with 14% crude protein, 4% fat, and 15% crude fiber. The main ingredients include wheat middlings, alfalfa meal, flaxseed, and molasses.
16-10 Liberty (Nature Belisle)
Mineral BalanceMineral Balance
NutrientsNutrients
NutritionNutrition
VitaminsVitamins
Liberty 16-10 is a vitamin/mineral supplement intended for horses at maintenance or in training, broodmares and growing foals. It contains organic selenium, 16% calcium, and 10% phosphorus.
18% A/N (Agassiz Feeds)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
18% AN by Agassiz Feeds is a protein, energy, mineral, and vitamin lick designed for beef cattle on a forage-based diet. It is a molasses-based lick that contains a minimum of 30% protein.
2x Bio Plus 60 Double Strength Horse Supplement (Pennwoods Equine)
DigestionDigestion
Hoof HealthHoof Health
VitaminsVitamins
YeastYeast
2x Bio Plus 60 Double Strength Horse Supplement is a powdered hoof supplement that contains 15 mg of biotin per serving. It includes vitamins, minerals, and yeast that intends to improve absorption.
3 Wire Horse (Hay & Grain) Pellets (Kelley’s Feed)
FiberFiber
ForageForage
FlavorFlavor
NutritionNutrition
Kelley's 3 Wire Horse is an alfalfa-based pelleted feed with ground grain as well as added molasses, vitamins, and minerals. This hay and grain pellet contains 12.5% protein and 1.5% fat.
3-In-1 Block (Kalmbach Feeds)
ElectrolyteElectrolyte
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
3-In-1 Block by Kalmbach Feeds is a source of salt, vitamins and trace minerals in block form. It can be used to supplement beef cattle and horses on pasture grass.
30% Ration Balancer (Equine Advantage)
Omega 3-6-9Omega 3-6-9
ProteinProtein
Ration BalancerRation Balancer
VitaminsVitamins
30% Ration Balancer is intended to be fed alongside pasture or hay. It contains essential nutrients to support normal gut health, healthy hooves and coats.
30% Tub (Agassiz Feeds)
Mineral BalanceMineral Balance
NutritionNutrition
ProteinProtein
VitaminsVitamins
30% Tub by Agassiz Feeds is a protein, energy, mineral, and vitamin lick designed for beef cattle on a forage-based diet. It is a molasses-based lick that contains a minimum of 30% protein, with the protein being sourced from natural sources (no urea or feather meal).
35% Horse Supplement (Kalmbach Feeds)
Amino AcidAmino Acid
MuscleMuscle
NutrientsNutrients
ProteinProtein
35% Horse Supplement by Kalmach Feeds is an equine supplement pellet that provides 35% protein, vitamins, and minerals. It can be mixed to create a complete ration for a wide range of horses.
5-In-1 H/A (MVP)
Coat QualityCoat Quality
DigestionDigestion
Hoof HealthHoof Health
JointsJoints
5-In-1 H/A by MVP is a pelleted supplement for horses that intends to help support joint function. It is palatable with apple flavouring and contains glucosamine, hyaluronic acid, chondroitin sulphate, and MSM.
6-3 Cube Liberte (Nature Belisle)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
YeastYeast
6-3 Cube Liberte is an equine vitamin and mineral pelleted supplement for growing foals, broodmares and horses at maintenance or in training. This version of this supplement does not contain insect repulsion ingredients.
ABC’s Fortified G. R. P. (Advanced Biological Concepts)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ABC's Fortified G.R.P. by Advanced Biological Concepts is a supplement intended for horses and ponies of all ages and work levels. It contains 10% protein, 3% fat, and 17% fibre.
ABC’s Fortified Equine Supplement (Advanced Biological Concepts)
HealthHealth
Mineral BalanceMineral Balance
ProbioticProbiotic
VitaminsVitamins
ABC's Fortified Equine Supplement is a pelleted supplement that intends to be fed as a ration balancer for all life stages of horses. It contains vitamins, minerals, and probiotics for nutrient absorption.
ABC’s Rush Creek 1:1 Mineral (Advanced Biological Concepts)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ABC's Rush Creek 1:1 Mineral by Advance Biological Concepts is a free choice mineral supplement. It is intended for horses and ponies of all ages and work levels.
Accel Health and Wellness Formula (Vita Flex)
HealthHealth
Mineral BalanceMineral Balance
MuscleMuscle
VitaminsVitamins
Accel Health and Wellness Formula is a vitamin and mineral supplement for horses. It contains both organic and inorganic trace minerals.
Accel Lifetime (Vita Flex)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Accel Lifetime is a vitamin and mineral supplement providing 18% crude protein. It contains a mix of organic and inorganic trace minerals.
Accelerate (Right Choice)
Coat QualityCoat Quality
FatFat
NutritionNutrition
Weight IssuesWeight Issues
Accelerate is a textured complete feed with 12% protein and 8% fat. It is formulated for performance horses with added yeast and a combination of organic and inorganic minerals.
Accelerate GH (Right Choice)
FatFat
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
Accelerate GH is a pelleted complete feed with 12% protein, 8% fat, and 24% NSC. It contains organic minerals as well as pre and probiotics for digestive support.
AccuLytes Electrolyte Supplement (Vita Flex)
ElectrolyteElectrolyte
HydrationHydration
RecoveryRecovery
StaminaStamina
AccuLytes Electrolyte Supplement is an electrolyte powder that provides calcium, sodium, chloride, magnesium, potassium and dextrose. It is designed to replace minerals lost in sweat. Ideal for performance horses and horses exposed to extreme heat.
Achieve Performance Base (Pink Rose Organix)
Grain FreeGrain Free
Gut HealthGut Health
PerformancePerformance
Ration BalancerRation Balancer
Achieve Performance Base from Pink Rose Organix is a balancer that is intended for performance horses. It is grain free and is intended to assist with joint, gut, and muscle health and stress.
Achiever Foal Non-GMO (Daily Dose Equine)
BroodmareBroodmare
FoalFoal
GrainsGrains
Ration BalancerRation Balancer
Achiever Foal Non-GMO by Daily Dose Equine is a premixed forage balancer intended for broodmares in their last 2 months of pregnancy and for foals up to age 3. It contains minerals, vitamins, amino acids, and probiotics.
Achiever Non-GMO (Daily Dose Equine)
GrainsGrains
Gut HealthGut Health
Ration BalancerRation Balancer
VitaminsVitamins
Achiever Non-GMO by Daily Dose Equine is a textured feed that is intended to be fed as a forage ration balancer. It contains vitamins, minerals, amino acids, and probiotics meant for proper nutrient absorption.
Achiever-Lite (Daily Dose Equine)
GrainsGrains
Gut HealthGut Health
NutritionNutrition
Ration BalancerRation Balancer
Achiever-Lite by Daily Dose Equine is a textured feed that is intended to be fed as a forage ration balancer for easy keepers. It contains vitamins, minerals, amino acids, and probiotics for proper nutrient absorption.
Acid Ease (Equine Premium)
Gut HealthGut Health
HindgutHindgut
MetabolismMetabolism
NutrientsNutrients
Acid Ease from Equine Premium is meant to support the gut lining, digestive health, and digestive efficiency. It contains calcium carbonate which is meant to act as an acid buffer in the stomach.
AFX (Equine Choice)
Gut HealthGut Health
HealthHealth
HindgutHindgut
UlcersUlcers
AFX by Equine Choice is a liquid gastric support supplement formulated to help maintain normal stomach pH. It contains calcium carbonate, L-glutamine, and magnesium oxide.
Alam (McCauley’s Equine Formulas)
Caloric EnergyCaloric Energy
ExerciseExercise
Grain FreeGrain Free
Weight IssuesWeight Issues
McCauley's Alam is a pelleted feed with reduced levels of sugar and starches (NSC). It is formulated for horses that need to avoid grains, including horses prone to laminitis and horses with respiratory problems.
Alaska Equine Gold (Alaska Garden and Pet Supply)
HealthHealth
NutritionNutrition
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Alaska Equine Gold by Alaska Garden and Pet Supply is a pelleted feed formulated with enhanced vitamin and mineral supplementation to help balance the deficiencies of a forage-based diet.
Alfa Essentials (Tribute)
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
Ration BalancerRation Balancer
VitaminsVitamins
Alfa Essentials is a ration balancer formulated for diets that contain greater than 50% legume forages such as alfalfa. It provides higher phosphorous than calcium to balance elevated levels of calcium.
Alfa Pro (Hi-Pro Feeds)
FiberFiber
ForageForage
HealthHealth
NutrientsNutrients
Alfa Pro by Hi-Pro Feeds is a fortified, ground alfalfa cube designed for optimal equine nutrition. It is formulated to meet the dietary requirements of mature horses.

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