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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.
Alfa-Pro Elite (Hi-Pro Feeds)
ForageForage
Grain FreeGrain Free
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
Alfa-Pro Elite by Hi-Pro Feeds is a fortified, ground alfalfa cube. It is grain-free and low in NSC, making it suitable for horses with metabolic conditions.
Alfalfa Advantage (ProElite)
Mineral BalanceMineral Balance
NutritionNutrition
Ration BalancerRation Balancer
VitaminsVitamins
ProElite Alfalfa Advantage is a low-feeding rate pelleted ration balancer intended to balance diets composed of alfalfa forages. It can be fed to all classes of horses.
Alfalfa Bermuda Blend Pellets (Ametza)
FiberFiber
ForageForage
Mineral BalanceMineral Balance
VitaminsVitamins
Alfalfa Bermuda Blend Pellets by Ametza is a pelleted feed that is meant to provide energy from sources such as alfalfa and Bermuda hay. It is intended for horses in light to moderate work.
Alfalfa Bermuda Hay Pellets (Ace Hi Feeds)
FiberFiber
ForageForage
Gut HealthGut Health
NutritionNutrition
Alfalfa Bermuda Hay Pellets can be used as a forage replacement for horses. This product also contains added vitamins and minerals. This feed is beneficial for older horses who have difficulty chewing.
Alfalfa Hay & Grain Pellets (Ace Hi Feeds)
FiberFiber
ForageForage
GrainsGrains
NutritionNutrition
Alfalfa Hay & Grain Pellets contain a blend of alfalfa forage and ground grain (barley or corn). This product contains a minimum of 12.5% protein, as well as added vitamins and minerals.
Alfalfa Hay Pellets (Ace Hi Feeds)
FiberFiber
ForageForage
Gut HealthGut Health
NutritionNutrition
Alfalfa Hay Pellets are a high protein forage source for horses. It contains a minimum of 14% protein and has added vitamins and minerals. This feed is beneficial for older horses, horses with bad teeth, or horses who are sensitive to breathing in dust from long-stem hay.
Alfalfa Hay Pellets (Kelley’s Feed)
FiberFiber
ForageForage
NutritionNutrition
ProteinProtein
Kelley's Feed Alfalfa Hay Pellets by is an alfalfa-based feed in a pelleted form with molasses for palatability. Hay pellets are recommended for horses with dental or respiratory issues. This forage replacement contains added vitamins and inorganic minerals.
Alfalfa Pellets (Ametza)
FiberFiber
ForageForage
Mineral BalanceMineral Balance
VitaminsVitamins
Alfalfa Pellets by Ametza is a pelleted feed that is intended to supply horses of all life stages with adequate energy. This feed contains alfalfa and is designed for maintenance or moderate to heavy working animals.
Alfalfa Support (Pureform)
AntioxidantAntioxidant
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
Pureform Alfalfa Support is a vitamin/mineral supplement designed for horses on diets containing high levels of alfalfa hay. It is suitable for all life stages and includes ingredients for joint health, such as glucosamine and MSM.
Alfalfa-Oat Hay Pellets (Ace Hi Feeds)
FiberFiber
ForageForage
NutritionNutrition
ProteinProtein
Alfalfa-Oat Hay Pellets by Ace Hi Feeds can be used as a forage replacement for horses. This product contains at least 12% protein, added molasses, and added vitamins and minerals.
Alfalfa-Pro Fibre (Spillers Feeds)
Caloric EnergyCaloric Energy
FatFat
FiberFiber
Gut HealthGut Health
Alfalfa-Pro Fibre from Spillers Feed is an alfalfa blend that provides 12% protein, 10% fat, and 25% fiber. This feed is intended to improve coat quality, support gut health, and reduce excitability.
Alfalfa/Bermuda Hay Pellets (Star Milling Co)
DentalDental
FiberFiber
ForageForage
NutritionNutrition
Alfalfa/Bermuda Hay Pellets by Star Milling Co are a blend of alfalfa and Bermuda hay designed as a forage replacement for horses. It contains 32% fiber and 11% protein in a 3/8 inch pellet with added molasses, vitamins, and minerals.
Alfalfa/Oat Hay Pellets (Kelley’s Feed)
FiberFiber
ForageForage
GrainsGrains
NutritionNutrition
Alfalfa/Oat Hay Pellets by Kelley's Feed is a pelleted forage replacement containing alfalfa and oat hay with added vitamins and minerals. Molasses is used for palatability and as an energy source.
AlfaMax RX (Alfamax Feed)
Complete FeedComplete Feed
DigestionDigestion
HealthHealth
Low NSC FeedsLow NSC Feeds
AlfaMax RX from Alfamax Feed is a complete pelleted feed. AlfaMax RX contains no soybean meal & is intended for horses' requiring a low NSC content (starch + sugars).
Align (OE Nutraceuticals)
Gut HealthGut Health
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
Align is a vitamin and mineral supplement intended for performance horses. It contains prebiotics and probiotics which are meant to support gut health.
All In (Woody’s Horse Nutrition)
HealthHealth
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
All In by Woody’s Horse Nutrition is a pelleted vitamin and mineral supplement intended for horses on a forage-based or unfortified grain diet. It contains the limiting amino acids lysine, methionine, and threonine.
All Phase (Lifeline)
FiberFiber
Grain FreeGrain Free
Mineral BalanceMineral Balance
VitaminsVitamins
All Phase from Lifeline is a pelleted ration balancer intended for all horse types. This ration balancer contains 20% protein.
All Phase 20 – Pelleted (Brooks)
HealthHealth
Organic Trace MineralsOrganic Trace Minerals
Ration BalancerRation Balancer
VitaminsVitamins
All Phase 20 is a pelleted ration balancer designed to supply protein, vitamins, and minerals to diets not containing the recommended daily serving of complete feed. This pelleted feed also contains biotin and yeast culture to support digestive and hoof health.
All Stock Block (Sweet Country Feeds)
Mineral BalanceMineral Balance
NutritionNutrition
ProteinProtein
VitaminsVitamins
All Stock Block by Sweet Country Feeds is a protein supplement intended for free-choice consumption by multiple livestock species including horses. It contains 20% protein and 4.5% fat.
All-4-Feet (Dunstan)
FiberFiber
Hoof HealthHoof Health
Low NSC FeedsLow NSC Feeds
Organic Trace MineralsOrganic Trace Minerals
All-4-feet Dunstan is a low-starch, protein, high fibre formulation, designed to meet the nutrition requirements of horses that benefit from a low starch/low sugar diet due to various health conditions.
All-In-One Supplement (Extreme Equine Supplements)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
NutritionNutrition
VitaminsVitamins
All-In-One Supplement by Extreme Equine Supplements is a comprehensive vitamin and mineral formula designed to support overall health and development in horses.
Allay Digestion Buffer & Calmer (Adeptus)
CalmingCalming
Gut HealthGut Health
HealthHealth
HindgutHindgut
Allay Digestion Buffer & Calmer is intended to aid in neutralizing pH in the horse's' digestive tract. This supplement contains licorice extract which is intended to soothe the digestive tract.
Alpaca Concentrate Pellet (Bar Ale)
HealthHealth
NutrientsNutrients
NutritionNutrition
VitaminsVitamins
Alpaca Concentrate Pellet is a concentrated pelleted feed intended to be fed to alpacas. It contains 18% protein, 2.9% fat, and 18.5% fiber.
Amber Grains Classic 12-4 Fiberwise (Coker Feed Mill)
DigestionDigestion
Easy KeeperEasy Keeper
FiberFiber
RecoveryRecovery
Amber Grains Classic 12-4 Fiberwise by Coker Feed Mill is a high-fiber (20%) textured feed intended for easy keepers and horses in recovery.
Amber Grains Classic 12-5 Pellet (Coker Feed Mill)
DigestionDigestion
HealthHealth
NutrientsNutrients
NutritionNutrition
Amber Grains Classic 12-5 Pellet by Coker Feed Mill is a pelleted feed intended for active horses not in heavy work.
Amber Grains Classic 12-6 Textured (Coker Feed Mill)
NutrientsNutrients
NutritionNutrition
PrebioticPrebiotic
ProbioticProbiotic
Amber Grains Classic 12-6 Textured by Coker Feed Mill is a textured feed intended to supplement hay. It is designed for active horses not in heavy work.
Amber Grains Classic 14-8 Pellet (Coker Feed Mill)
DigestionDigestion
Gut HealthGut Health
HealthHealth
ProbioticProbiotic
Amber Grains Classic 14-8 Pellet by Coker Feed Mill is a corn-free pelleted feed intended to support overall health in horses in moderate work and older horses with sensitive digestive systems.
Amber Grains Classic Senior Textured (Coker Feed Mill)
DigestionDigestion
FiberFiber
Gut HealthGut Health
SeniorSenior
Amber Grains Classic Senior Textured by Coker Feed Mill is a textured feed intended to support digestion and body condition in senior horses.
Amber Grains Elite 10-10 Performance (Coker Feed Mill)
DigestionDigestion
EnergyEnergy
MuscleMuscle
PerformancePerformance
Amber Grains Elite 10-10 Performance by Coker Feed Mill is a high calorie textured feed intended to support digestion, muscle gain and endurance in performance horses.
Amber Grains Elite 12-12 Performance (Coker Feed Mill)
DigestionDigestion
EnergyEnergy
Gut HealthGut Health
PerformancePerformance
Amber Grains Elite 12-12 Performance by Coker Feed Mill is a textured feed intended to provide cool energy for performance horses.
Amber Grains Elite Front Runner (Coker Feed Mill)
Caloric EnergyCaloric Energy
EnergyEnergy
Gut HealthGut Health
PerformancePerformance
Amber Grains Elite Front Runner by Coker Feed Mill is a high-energy feed intended for performance. It is formulated to support strength, stamina and endurance in horses.
Amber Grains Elite Mare and Foal (Coker Feed Mill)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Amber Grains Elite Mare and Foal by Coker Feed Mill is a textured feed intended to support overall health in pregnant mares, lactating mares and growing foals.
Amber Grains Elite Serenity Ultra LS (Coker Feed Mill)
HealthHealth
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
SeniorSenior
Amber Grains Elite Serenity Ultra LS by Coker Feed Mill is a low NSC (8.94%) pelleted feed intended for horses with sensitive digestive systems.
Amber Grains Elite Super Senior (Coker Feed Mill)
DigestionDigestion
FiberFiber
ProbioticProbiotic
SeniorSenior
Amber Grains Elite Super Senior by Coker Feed Mill is a textured feed intended to support overall health and digestion in senior horses.
Aminolyte (Banks Mill Feeds)
Amino AcidAmino Acid
ElectrolyteElectrolyte
MuscleMuscle
PerformancePerformance
Equine First Aminolyte is an electrolyte and branched-chain amino acid supplement intended to support exercise and recovery in performance horses.
Amplify High Fat Supplement (Purina Mills)
Coat QualityCoat Quality
Competition HorsesCompetition Horses
FatFat
Weight IssuesWeight Issues
Amplify High Fat Supplement is an extruded fat supplement that includes rice bran, flax seed and vegetable oil. It provides added calories for horses that have higher energy needs.
AniDex (AniMed)
ElectrolyteElectrolyte
FlavorFlavor
Mineral BalanceMineral Balance
NutrientsNutrients
AniDex from AniMed is meant to provide additional salts and minerals to achieve electrolyte balance. It targets hard-working horses and comes in three flavours: apple, cherry, and orange.
AniHist H (AniMed)
HealthHealth
ImmunityImmunity
RespiratoryRespiratory
VitaminsVitamins
AniHist H from AniMed is meant to support the respiratory health of horses. It contains a herbal-blend aiming to help horses with seasonal allergies, to enable them to breathe better, and to support their immune system.
Anti-Carb (Pellets) (MVP)
HealthHealth
MetabolismMetabolism
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
Anti-Carb by MVP is a pelleted supplement that intends to provide support to maintain blood sugar levels. It contains magnesium oxide and magnesium proteinate ingredients.
Anti-Stress Herbal Pellets (St.Hippolyt)
CalmingCalming
HerbHerb
RecoveryRecovery
StressStress
Anti-Stress Herbal Pellets by St.Hippolyt is an herbal supplement containing valerian and magnesium, intended to help horses in stressful situations.
Apple Electrolyte (Kauffman’s)
ElectrolyteElectrolyte
ExerciseExercise
HydrationHydration
RecoveryRecovery
Apple Electrolyte from Kauffman's is a powdered electrolyte for horses. This supplement contains water-soluble ingredients with an added apple flavour. Apple Electrolyte is intended to encourage hydration.
Apple Elite Electrolyte (Farnam)
ElectrolyteElectrolyte
ExerciseExercise
HydrationHydration
RecoveryRecovery
Farnam Apple Elite Electrolyte is a powdered supplement containing salt (sodium chloride), potassium, calcium, magnesium. Apple Elite Electrolytes can be used to replace electrolytes lost in sweat. It is a sugar-free formula that contains artificial apple flavouring.
Apple Elite Electrolyte Pellets (Farnam)
ElectrolyteElectrolyte
HealthHealth
HydrationHydration
Organic Trace MineralsOrganic Trace Minerals
pple Elite Electrolyte Pellets by Farnam are easy-to-feed, apple-flavoured pellets that help encourage healthy water consumption. They’re formulated with sodium chloride, potassium, magnesium, and calcium.
Apple Hi-Drate Powder (Equine America)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
PerformancePerformance
Apple Hi-Drate is a supplement for horses that is intended to support hydration and provide electrolytes. It contains minerals and is meant for working horses.
Apple-A-Day Electrolyte (Finish Line Horse Products)
ElectrolyteElectrolyte
HydrationHydration
RecoveryRecovery
StaminaStamina
Apple-A-Day is a sugar-free electrolyte supplement formulated with calcium, salt, potassium, magnesium, zinc, and copper. Electrolytes support mineral balance, hydration and exercise recovery.
Apple-Lyte Electrolytes (Meal) (MVP)
ElectrolyteElectrolyte
ExerciseExercise
FlavorFlavor
StressStress
Apple-Lyte Electrolytes by MVP is a premixed supplement that is a palatable apple-flavoured source of electrolytes intended for horses during dehydration, heat, or stress. It contains ingredients such as dextrose, salt, and magnesium silicate.
Aqua-Aide (Baileys Horse Feeds)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
RecoveryRecovery
Aqua-Aide by Baileys Horse Feeds is an electrolyte supplement for all horses in work, especially those who sweat in training and competition. This supplement contains sodium chloride, potassium sulfate, and magnesium sulfate.
Arizona Copper Complete (Horse Tech)
HealthHealth
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
VitaminsVitamins
Arizona Copper Complete is a vitamin and mineral supplement for horses containing copper and other trace minerals in an organic amino acid complex. The supplement also provides vitamins and amino acids in a milled flax base.
Artoa Pellets (Ametza)
FiberFiber
ForageForage
GrainsGrains
PerformancePerformance
Artoa Pellets by Ametza is a pelleted feed that provides energy through sources such as alfalfa hay and cracked corn. It contains a low grain level to minimize a variety of metabolic issues.
At-Ease (Select the Best)
Amino AcidAmino Acid
CalmingCalming
Mineral BalanceMineral Balance
VitaminsVitamins
At-Ease is a horse supplement purported to promote a calm mood. It is formulated with the B-vitamins, thiamine, and pyridoxine. It also includes the amino acid tryptophan and magnesium oxide.

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