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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.
Performance Textured (Woody’s Horse Nutrition)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
FatFat
ProteinProtein
Woody’s Performance Textured is a complete textured feed for exercising and performance horses. It provides 14% protein and 10% fat and is composed of oats, beet pulp, molasses and vegetable oil.
Performance Vitamins and Minerals (Dodson & Horrell)
Competition HorsesCompetition Horses
ElectrolyteElectrolyte
Mineral BalanceMineral Balance
VitaminsVitamins
Performance Vitamins and Minerals from Dodson & Horrell is a pelleted supplement that provides increased micronutrients for performance and breeding horses and ponies. This supplement also contains electrolytes to promote recovery and rehydration.
Performance XL (Manna Pro)
Competition HorsesCompetition Horses
NutritionNutrition
PerformancePerformance
ProteinProtein
Performance XL from Manna Pro is a complete feed designed for equine athletes with higher energy demands. It contains Calf-Manna® as a source of protein and Max-E Glo® Stabilized Rice Bran as a source of energy from fat. Performance XL is 12% crude protein, 8% crude fat, and 8% crude fibre.
Perk-A-Lyte (Cox Vet Lab)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
StaminaStamina
Perk-A-Lyte is a electrolyte supplement intended to replenish electrolyte stores after exercise and competition.
Perk-A-Lyte Plus (Cox Vet Lab)
ElectrolyteElectrolyte
HydrationHydration
PerformancePerformance
RecoveryRecovery
Perk-A-Lyte Plus from Cox Vet Lab is an electrolyte supplement intended for performance horses after exercise. Perk-A-Lyte Plus is intended to replenish electrolytes lost during exercise.
Perktone (Cox Vet Lab)
Blood CellsBlood Cells
EnergyEnergy
Mineral BalanceMineral Balance
VitaminsVitamins
Perktone is a liquid iron supplement intended to help performance horses with their blood's ability to transport oxygen throughout the body. This may lead to improved performance.
Phase I – Pelleted (Brooks)
EnergyEnergy
FoalFoal
GrowthGrowth
NutritionNutrition
Phase I - Pelleted is intended for growing horses. Phase I is intended to promote and support growth. This feed contains barley and corn.
Phase I – Textured (Brooks)
FoalFoal
GrowthGrowth
HealthHealth
NutritionNutrition
Phase I is a textured feed intended for growing horses. This feed is intended to support growth and contains oats and soybean meal.
Photo Finish (Brooks Feeds)
EnergyEnergy
PrebioticPrebiotic
ProbioticProbiotic
StaminaStamina
Photo Finish from Brooks Feeds is a textured feed that contains fibre and fat. It is a source of energy and supports stamina for speed and power. This feed also includes pre and probiotics.
Physique (Equi-lete)
Bone HealthBone Health
EnergyEnergy
HealthHealth
Mineral BalanceMineral Balance
UlcersUlcers
Physique by Equi-lete is a pelleted supplement intended to support bone and tissue health in all horse types.
Pianissimo (Cavalor)
Complete FeedComplete Feed
Easy KeeperEasy Keeper
Metabolic SyndromeMetabolic Syndrome
Ration BalancerRation Balancer
Pianissimo by Cavalor is formulated to be a lower energy feed with lower protein levels and no added oats. This feed is targeted to hot horses to reduce stress.
Placid (Dodson & Horrell)
CalmingCalming
HerbHerb
NutrientsNutrients
StressStress
Placid from Dodson & Horrell is a supplement that supports calming and an even temperament in horses and ponies. This supplement contains herbs such as chamomile, lemon balm, and vervain.
Platinum Metabolic Support (Platinum Performance)
MetabolismMetabolism
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
NutrientsNutrients
Platinum Metabolic Support is an equine supplement providing magnesium citrate and chromium to support metabolic health and blood sugar regulation. Chromium supports glucose tolerance and normal blood sugar levels while magnesium supports the metabolism of carbohydrates, proteins, and fats.
Platinum Performance® Equine Wellness and Performance Formula
EnergyEnergy
FatFat
JointsJoints
Omega 3-6-9Omega 3-6-9
Platinum Performance® Equine Wellness and Performance Formula is a nutritional supplement containing ground flaxseed, stabilized rice bran, montmorillonite (bentonite) clay and a range of vitamins and minerals.
Platinum Steady (Platinum Performance)
HealthHealth
IngredientIngredient
NutrientsNutrients
StressStress
Platinum Steady (Platinum Performance) is a boron and magnesium supplement intended for horses with neurological conditions such as headshaking.
Pleasure 12% (Manna Pro) [Discontinued]
Complete FeedComplete Feed
FiberFiber
HealthHealth
NutritionNutrition
Manna Pro Pleasure 12% is a pelleted feed formulated for pleasure horses. It contains 12% crude protein, 4% crude fat, 22% crude fibre, and uses a mix of organic and inorganic trace minerals.
Pleasure Sweet (Buckeye)
Complete FeedComplete Feed
DigestionDigestion
NutritionNutrition
SeniorSenior
Pleasure Sweet is a multi-particle sweet feed with added molasses to improve palatability. This feed supports digestibility and is intended for mature maintenance or lightly worked horses.
Post Time (McCauley’s Equine Formulas)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
ExerciseExercise
PerformancePerformance
Post Time® is a highly palatable textured horse feed providing high digestible energy levels for performance horses. It provides 8% crude fat from vegetable oil, 12% protein, and 11% crude fiber.
Pounds Plus (The Mill)
HealthHealth
NutritionNutrition
ProbioticProbiotic
Weight IssuesWeight Issues
Pounds Plus from The Mill is a granular probiotic supplement for horses. Pounds Plus is high in fat and contains Vitamin B1 and probiotics. This supplement is intended to promote weight gain.
Power Finish (Tribute)
Complete FeedComplete Feed
EnergyEnergy
ExerciseExercise
PerformancePerformance
Tribute Power Finish is a high-fat textured feed intended for adult horses in heavy training. It provides highly digestible energy sources to support the calorie requirements of racehorses. Power Finish contains high levels of protein (13% crude protein), fat (10% crude fat), and NSC (32%).
Power Play (Brooks Feeds)
EnergyEnergy
FiberFiber
PerformancePerformance
StaminaStamina
Power Play from Brooks Feeds is an energy-dense textured feed. It is intended to support horses in high intensity exercise or performance horses.
Power Quench Electrolyte Supplement (Strictly Equine)
ElectrolyteElectrolyte
FlavorFlavor
HydrationHydration
StaminaStamina
Strictly Equine Power Quench is an electrolyte supplement that comes in both an apple and an orange flavour. It provides the major electrolyte minerals including sodium, chloride, potassium, calcium, and magnesium.
Power Up (Cox Vet Lab)
Competition HorsesCompetition Horses
MuscleMuscle
PerformancePerformance
RecoveryRecovery
Power Up from Cox Vet Lab is a liquid equine supplement containing a blend of Gamma Oryzanol and Creatine. Power Up is cherry flavoured to improve palatability.
Power-Plus Mix (Havens Horsefeed)
ElectrolyteElectrolyte
ExerciseExercise
GrainsGrains
PerformancePerformance
Power-Plus Mix by Havens Horsefeed is a high-energy feed for performance horses. It contains barley flakes, corn flakes, and oats as energy sources. The additional electrolytes support horses in hot climates.
PowerGLO (ADM Animal Nutrition)
Caloric EnergyCaloric Energy
ExerciseExercise
PerformancePerformance
Weight IssuesWeight Issues
PowerGLO is a concentrated feed formulated for elite performance horses. It is high in fat and carbohydrates to support the caloric needs of equine athletes.
Pre-Fuel Gel (Foran Equine)
Competition HorsesCompetition Horses
EnergyEnergy
MuscleMuscle
NutrientsNutrients
Pre-Fuel Gel from Foran Equine is intended for performance horses and ponies. This supplement is meant to provide extra nutrients and energy to the horses diet.
Precision (Ark Nutrition)
Amino AcidAmino Acid
FatFat
GrowthGrowth
ToplineTopline
Precision by Ark Nutrition is a pelleted feed that is low in sugar with a moderate starch level meant to ease digestion and is higher in soluble fiber levels to support hindgut function.
Premium 250 (Pryde’s EasiFeed)
PerformancePerformance
ProteinProtein
Ration BalancerRation Balancer
RecoveryRecovery
Premium 250 by Pryde's EasiFeed is a ration balancer containing 25% protein. It is intended for performance horses, and horses recovering from illness or injury.
Premium Plus (McMillan Equine Feeds)
HealthHealth
MuscleMuscle
PerformancePerformance
ProteinProtein
Premium Plus by McMillan Equine Feeds is a textured feed intended to support energy demands in racing and high performance horses.
Prep 14 (Hallway)
Caloric EnergyCaloric Energy
Gut HealthGut Health
RecoveryRecovery
Weight IssuesWeight Issues
Prep 14 from Hallway is a fortified high-energy, fat, and fibre feed for horses with greater energy demands. Prep 14 contains 14% protein, 12.5% fibre, and 10% fat.
Prep Mix (Baileys Horse Feeds)
FatFat
GrowthGrowth
NutritionNutrition
ToplineTopline
Baileys Horse Feeds Prep Mix is formulated to provide optimum growth support and condition. This feed is intended for yearlings to 3-year-olds in early training. Prep Mix is oat-free and contains 6.5% of oil, which helps to improve coat quality.
Prep Mix (Red Mills)
BroodmareBroodmare
FoalFoal
GrowthGrowth
StallionStallion
Prep Mix from Red Mills is a feed intended for foals, yearlings, and breeding stock. This feed is meant to support growth, bone development and integrity, and coat condition.
Prime Lyte (Prime Performance Nutrition)
ElectrolyteElectrolyte
ExerciseExercise
PerformancePerformance
RecoveryRecovery
Prime Lyte is a buffered electrolyte blend by Prime Performance Nutrition. It is intended to replace electrolytes lost in sweat.
PrimeGLO (ADM Animal Nutrition)
FatFat
Omega 3-6-9Omega 3-6-9
PerformancePerformance
Weight IssuesWeight Issues
PrimeGLO is a concentrated horse feed designed for mature horses. It is a soft, easy-to-chew formulation that contains ingredients to support gut health. The total NSC is 14.5%.
Primequine (Newmac Animal Feeds)
HealthHealth
NutritionNutrition
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Primequine by Newmac Animal Feeds is a vitamin and mineral supplement intended to support overall health in horses.
Pro Balance (Bluebonnet Feeds)
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
YeastYeast
Pro Balance by Bluebonnet is a comprehensive diet balancer formulated to correct vitamin and mineral deficiencies commonly found in forage-only diets for horses. It also includes yeast, probiotics, and digestive enzymes to support optimal gut health and nutrient absorption.
Pro Digest Balancer (Horslyx)
Gut HealthGut Health
HindgutHindgut
Mineral BalanceMineral Balance
YeastYeast
Pro Digest Balancer from Horslyx is designed to support gut health in horses and ponies. This balancer contains seaweed and bark as a source of mucilage. Licking the product supports saliva production, which can help buffer stomach acidity.
Pro Fibre 10 Cubes (Red Mills)
Complete FeedComplete Feed
Coat QualityCoat Quality
HealthHealth
NutritionNutrition
Pro Fibre 10 Cubes from Red Mills is an oat-free feed intended for horses at moderate to heavy work and those easily stressed. This feed is designed to support a balanced temperament and coat condition.
Pro Fibre 13 Cubes (Red Mills)
Competition HorsesCompetition Horses
EnergyEnergy
NutritionNutrition
StaminaStamina
Pro Fibre 13 Cubes from Red Mills is intended for racehorses in full training or horses in moderate to heavy work. This feed is meant to support controlled energy release for stamina and post-exercise recovery.
Pro Horse 12 (MAC)
EnergyEnergy
FatFat
NutrientsNutrients
SeniorSenior
Pro Horse 12 by MAC is a high energy feed with vitamins and minerals, it is intended for mature horses.
Pro Lyte Powder (Uckele)
ElectrolyteElectrolyte
ExerciseExercise
HydrationHydration
RecoveryRecovery
Pro Lyte Powder is the powdered electrolyte supplement, similar in formulation to Liqui Lyte. It supplies calcium, sodium, chloride, magnesium, and potassium with maltodextrin to increase electrolyte absorption.
Pro Mare (MAC)
BroodmareBroodmare
LactationLactation
Mineral BalanceMineral Balance
NutrientsNutrients
Pro Mare by MAC is a salt-limited supplement intended for lactating or dry mares on hay or pasture.
Pro Mare With Clarifly (MAC)
BroodmareBroodmare
HealthHealth
LactationLactation
NutrientsNutrients
Pro Mare with Clarifly by MAC is a protein, vitamin and mineral supplement. It is intended to control the development of flies in the manure of dry and lactating mares.
Pro Performance Balancer (Spillers Feeds)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
MuscleMuscle
PerformancePerformance
The Pro Performance Balancer from Spillers Feed is intended for performance horses. This feed is high in antioxidants such as Vitamins E and C, which support the horse's muscles, immunity, and respiratory health.
Pro V.M. (Peak Performance Nutrients)
JointsJoints
MuscleMuscle
PerformancePerformance
StaminaStamina
Pro V.M. by Peak Performance Nutrients is a multi-use vitamin, mineral and amino acid supplement designed with race horses in mind. It intends to support the extreme demands on the horse’s joints, immune system and muscular system.
Pro V.M. with EFAs (Peak Performance Nutrients)
AntioxidantAntioxidant
ElectrolyteElectrolyte
JointsJoints
MuscleMuscle
Pro V.M. with EFAs by Peak Performance Nutrients is a vitamin, mineral, amino acid & probiotic supplement designed with race horses in mind. It intends to support the extreme demands on the horse’s joints, immune system and digestive system.
ProAdvantage – Alfalfa Formula (Progressive Nutrition)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ProAdvantage® – Alfalfa Formula is a ration balancer concentrate intended for horses consuming alfalfa hay. This feed contains amino acids, vitamins, and minerals in a lower-starch format.
ProAdvantage – Grass Formula (Progressive Nutrition)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ProAdvantage® – Grass Formula is a concentrated ration balancer intended for horses consuming grass or mixed hay. This feed contains amino acids, vitamins, and minerals in a lower-starch format.
Profecta 10 (Seminole)
Caloric EnergyCaloric Energy
Feed EfficiencyFeed Efficiency
GrainsGrains
YeastYeast
Seminole Profecta 10™ is a pelleted feed providing grains, digestible fibers, yeast and molasses with 21% NSC. It is targeted at active mature horses and ponies.
Profecta 12 (Seminole)
FiberFiber
GrainsGrains
Mineral BalanceMineral Balance
YeastYeast
Seminole Profecta 12 is a pelleted feed intended for mature, active horses and ponies. It has a moderate energy density, yeast culture, and 19% NSC (sugar and starch).

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