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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.
SU-PER Sound Powder (Gateway Products)
HealthHealth
JointsJoints
NutrientsNutrients
RecoveryRecovery
SU-PER Sound Powder by Gateway Products is a supplement to support joint, ligament, and tendon health. This supplement contains glucosamine, MSM, and bromelain to help maintain healthy joint function.
SU-PER StressEx Powder (Gateway Products)
CalmingCalming
ElectrolyteElectrolyte
RecoveryRecovery
StressStress
SU-PER StressEx Powder by Gateway Products is a supplement containing electrolytes that helps maintain a horse's normal body fluid levels. This supplement aids in supporting normal nerve and muscle function and helps prevent dehydration.
Summer Games Electrolytes (Kentucky Performance Products)
ElectrolyteElectrolyte
HydrationHydration
PerformancePerformance
StressStress
KPP's Summer Games Electrolytes is an equine electrolyte and trace mineral supplement designed to replenish electrolyte balance, encourage hydration, and promote performance.
Summer Heat (Woody’s Horse Nutrition)
Competition HorsesCompetition Horses
DigestionDigestion
FiberFiber
PerformancePerformance
Woody’s Summer Heat is a complete feed formulated for performance horses in heavy to intense work. It contains 12.5% protein and 7.0% fat, and is made with oats, barley, molasses and beet pulp.
Sunshine Plus Pelleted Horse Feed (Blue Seal)
Complete FeedComplete Feed
ProteinProtein
VitaminsVitamins
YeastYeast
Sunshine Plus is a high protein (30%) pelleted feed containing soybean meal and whey. Energy sources include cane molasses, wheat middlings, oil, and corn distillers grains.
Super 16 (Hallway)
BroodmareBroodmare
GrowthGrowth
LactationLactation
NutritionNutrition
Super 16 is a textured sweet feed fortified with Stamm 30 formulated for growing horses and broodmares in peak lactation. This feed uses whole and rolled grains with molasses as energy sources. Super 16 contains 16% protein, 3.5% fat, and 9% fibre.
Super Concentrated Calming Balancer (Blue Chip Feed)
CalmingCalming
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
StressStress
Super Concentrated Calming Balancer from Blue Chip Feed is intended for horses and ponies at all work levels but specifically performance horses. This balancer is designed to support calming behaviors with added magnesium.
Super Concentrated Ulsa-Cool Balancer (Blue Chip Feed)
Gut HealthGut Health
Hoof HealthHoof Health
Ration BalancerRation Balancer
YeastYeast
Super Concentrated Ulsa-Cool Balancer from Blue Chip Feed is intended for any horse or pony at any level of exercise. This balancer is designed to support hoof health, immunity, and coat condition.
Super Condition (St.Hippolyt)
Mineral BalanceMineral Balance
MuscleMuscle
PerformancePerformance
VitaminsVitamins
Super Condition by St.Hippolyt is a pelleted vitamin and mineral supplement intended for performance horses, and breeds with increased muscle mass.
Super Horse 12-12 (Manna Pro)
BroodmareBroodmare
Complete FeedComplete Feed
NutritionNutrition
PerformancePerformance
Super Horse 12-12 from Manna Pro is a textured sweet feed formulated for performance horses, broodmares, and stallions. Super Horse 12-12 contains 12% crude protein, 6% crude fat, and 7% crude fiber.
Super Horse Manna Senior (Manna Pro)
DentalDental
NutritionNutrition
SeniorSenior
Weight IssuesWeight Issues
Super Horse Manna Senior from Manna Pro is a beet pulp-based feed designed for senior horses. It contains 12.5% crude protein, 4% crude fat, 18% dietary starch, 7% sugars, and a mix of organic and inorganic trace minerals.
Super Horse Performance 10 (Manna Pro)
ExerciseExercise
GrainsGrains
NutritionNutrition
PerformancePerformance
Super Horse Performance 10 from Manna Pro is available as a pellet or a textured feed. Super Horse Performance 10 contains 10% crude protein, 6% crude fat, 7% crude fibre, and uses a mix of organic and inorganic trace minerals.
Super So-Kalm Powder (Equine America)
Amino AcidAmino Acid
CalmingCalming
Mineral BalanceMineral Balance
StressStress
Super So-Kalm Powder from Equine America is a concentration and focus supplement for horses. It is intended to assist with calming and reducing stress and it contains minerals.
Super Staminoats (Hallway)
BroodmareBroodmare
GrowthGrowth
LactationLactation
NutritionNutrition
Super Staminoats from Hallway is a cubed feed fortified with Stamm 30, formulated for gestating or lactating broodmares, and young growing horses. This feed contains 16% protein, 3% fat, and 9.5% fibre.
Super Weight Gain (Horse Guard)
Coat QualityCoat Quality
HealthHealth
NutritionNutrition
Weight IssuesWeight Issues
Super Weight Gain by Horse Guard, is a supplement intended for healthy weight gain and enhancing coat condition. This supplement contains full-fat soybeans, prebiotics, probiotics and a vitamin mineral package.
SuperFibra Integri-T (Purina Canada)
Complete FeedComplete Feed
ExerciseExercise
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
SuperFibra Integri-T is a complete feed designed for horses that require a reduced NSC diet and are at maintenance or in light work. SuperFibra Integri-T does not contain corn, oats, barley, or molasses.
SuperFibra Integri-T (Purina)
ExerciseExercise
FiberFiber
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
SuperFibra Integri-T has a low NSC content (10%) which can be fed to horses that require a low starch/sugar diet. SupreFibra Integri-T is a pelleted feed that is designed for horses who are insulin resistant or have a history of tieing up.
Supple & Senior Balancer (Spillers Feeds)
JointsJoints
NutritionNutrition
Ration BalancerRation Balancer
SeniorSenior
Supple & Senior Balancer from Spillers Feed contains amino acids, vitamins, and minerals to balance the diet. This feed is intended for senior horses and ponies to balance the diet and support joint health. The NSC content makes it suitable for horses and ponies prone to laminitis.
Support One (Pureform)
AntioxidantAntioxidant
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
Pureform Support One is an equine supplement formulated to support joint, bone, and immune health. It contains Glucosamine, MSM, amino acids, complete vitamins, trace minerals, and anti-oxidants.
Support Pro (Formula 707)
CalmingCalming
DigestionDigestion
Gut HealthGut Health
UlcersUlcers
Support Pro from Formula 707 is a pelleted supplement that is intended to support digestion, stomach and hindgut health. It is also meant for calming or ulcer support.
SupportPRO (Horse Logic Pro) – [Discontinued]
Competition HorsesCompetition Horses
Gut HealthGut Health
HealthHealth
ImmunityImmunity
SupportPRO from Horse Logic Pro is a pelleted gut supplement. SupportPRO is intended to provide hindgut support to horses who struggle with gastric issues during periods of stress. SupportPRO contains 12% crude protein and 1.25% fat.
Supreme (Barastoc)
FatFat
PerformancePerformance
ProteinProtein
ToplineTopline
Supreme from Barastoc is a feed for horses that assists in the development of topline. It has low starch, high fat, high protein amounts and vitamins and minerals that is meant for performance horses.
Supreme Horse Pride 18:18 Mineral (Harmony Equine)
HealthHealth
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Supreme Horse Pride 18:18 Mineral by Harmony Equine is a mineral supplement that contains and 1:1 ratio of 18% calcium and 18% phosphorus. It can be fed half and half with salt to promote consumption.
SUPREME™ 10 Pelleted Feed (BUCKEYE Nutrition)-[Discontinued]
Complete FeedComplete Feed
Gut HealthGut Health
HealthHealth
Ration BalancerRation Balancer
SUPREME™ 10 Pelleted Feed is a now-discontinued feed that provided 10% crude protein in a fortified grain mix. It was formulated to support the nutritional needs of mature horses.
Sustain (Allen & Page)-[Discontinued]
Competition HorsesCompetition Horses
NutrientsNutrients
NutritionNutrition
PerformancePerformance
Sustain from Allen & Page is intended for all horses and ponies but specifically performance horses. This feed has been discontinued.
Sustaina (Mitavite)
EnergyEnergy
ExerciseExercise
Gut HealthGut Health
PerformancePerformance
Sustaina by Mitavite is a micronized feed intended to provide fast release energy to race horses and horses in heavy work.
Sweat Werks (HorseTech)
ExerciseExercise
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Sweat Werks from HorseTech is a supplement for horses that is meant to support sweat functions. It contains minerals and vitamins.
SweatAgain (AniMed)
Amino AcidAmino Acid
ElectrolyteElectrolyte
Mineral BalanceMineral Balance
VitaminsVitamins
SweatAgain from AniMed is a powdered electrolyte supplement. It contains amino acids, vitamins, minerals and more, which all contribute to a horse's ability to sweat normally and maintain a healthy body temperature.
Sweet ‘N Safe (Daily Dose Equine)
Caloric EnergyCaloric Energy
FatFat
FlavorFlavor
GrainsGrains
Sweet 'N Safe by Daily Dose Equine is a textured feed for the average horse needing a higher caloric intake. It contains energy sources such as roasted whole oats, roasted whole barley, and roasted whole soybeans.
Sweet 10 (Excel Equine Feeds)
Easy KeeperEasy Keeper
EnergyEnergy
HealthHealth
NutritionNutrition
Sweet 10 is a textured feed from Excel Equine Feeds. This feed is intended for easy keepers or horses in light work.
Sweet 12% Textured (Agrimaster)
Gut HealthGut Health
Hoof HealthHoof Health
MuscleMuscle
Skin + HairSkin + Hair
Sweet 12% Textured by Agrimaster is a textured feed intended to support health and performance of all horse types.
Sweet Mix (Dunstan)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
PerformancePerformance
Weight IssuesWeight Issues
Sweet Mix by Dunstan is a highly palatable oat free textured feed that contains molasses. It is formulated to be a medium-energy feed intended for working horses or those requiring additional calories for weight gain.
Sweet-N-Salty (Apple) (Kalmbach Feeds)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
NutritionNutrition
Kalmbach Feeds Sweet-N-Salty Apple is a salt treat for horses that provides sodium, trace minerals, and apple flavouring in a block form.
Sweet-N-Salty (Banana) (Kalmbach Feeds)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
NutritionNutrition
Sweet-N-Salty Banana by Kalmbach Feeds is a treat lick for horses that provides salt, trace minerals, and banana flavouring in a block form. It can be used to supplement salt in a palatable form.
Sweet-N-Salty (Peppermint) (Kalmbach Feeds)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
NutritionNutrition
Sweet-N-Salty Peppermint by Kalmbach Feeds is a treat for horses that provides salt, trace minerals, and mint flavouring in a block form. It can be used as a palatable source of sodium in the equine diet.
Sweetfeed Racehorse Mix (Red Mills)
Competition HorsesCompetition Horses
EnergyEnergy
NutritionNutrition
StaminaStamina
Sweetfeed Racehorse Mix from Red Mills is intended for racehorses in moderate to heavy training, fussy eaters, and horses on a high protein forage. This feed is meant to support optimal performance and stamina.
Synergize (Tribute)
FatFat
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
PerformancePerformance
Synergize by Tribute is a pelleted feed intended for hard-keepers and horses with a heavy workload that are sensitive to sugar and starch.
Synergy (Ark Nutrition)
Hoof HealthHoof Health
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Ark Nutrition Synergy is a concentrated mineral and vitamin premix containing 100% organic selenium and a blend of inorganic and organic trace minerals. It contains no molasses, fillers or artificial flavours.
Synergy (Barastoc)
Bone HealthBone Health
Gut HealthGut Health
MuscleMuscle
VitaminsVitamins
Synergy from Barastoc is a concentrate for racing horses that is meant to assist with muscle health, gut health, and bone health.
Synergy (Thunderbrook)
Gut HealthGut Health
HealthHealth
HerbHerb
ImmunityImmunity
Synergy from Thunderbrook is a concentrated feed intended for all types of horses. Synergy contains prebiotics, herbs, and botanicals intended to support gut health.
Synergy Compete (SEB Equine)
HealthHealth
NutrientsNutrients
NutritionNutrition
PerformancePerformance
Synergy Compete by SEB Equine is a supplement intended to support overall health in performance horses.
TAB (Hallway)
Mineral BalanceMineral Balance
NutritionNutrition
ProteinProtein
VitaminsVitamins
Hallway Feed's TAB is a concentrated pelleted feed intended to balance the diet of horses fed alfalfa hay. It can be fed to horses at all life stages and has a lower feeding rate.
Textured Ration (Hoffman’s Horse Products)
Caloric EnergyCaloric Energy
DigestionDigestion
HealthHealth
NutritionNutrition
Textured Ration from Hoffman's is a textured feed for horses over 1 year of age. This feed is intended to increase fat absorption and digestion in horses. Hoffman's Textured Ration is 27.5% NSC.
Thia-Cal Liquid (Finish Line)
CalmingCalming
HealthHealth
NutrientsNutrients
PerformancePerformance
Thia-Cal Liquid is an equine supplement containing thiamine, magnesium and calcium. Thia - Cal Liquid is intended to support a healthy nervous system and promote calm behaviour.
Thrive (NAF Equine)
Gut HealthGut Health
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
Thrive from NAF Equine is intended for horses and ponies who have softer stools. This supplement contains clay which is meant to absorb excess acid within the digestive tract.
ThriveFeed Horse Feed
ForageForage
Gut HealthGut Health
HealthHealth
NutrientsNutrients
ThriveFeed is a pelleted horse feed composed of alfalfa meal, timothy grass meal, sorghum, soybean meal, rice bran and kelp meal. It provides 15% protein, 2.5% fat and 20% fiber.
Tie Free 24 (Peak Performance Nutrients)
ElectrolyteElectrolyte
MuscleMuscle
PerformancePerformance
RecoveryRecovery
Tie Free 24 by Peak Performance Nutrients is a vitamin and mineral supplement that provides electrolytes to support horses prone to tying up. It contains vitamin E acetate, calcium carbonate, and sodium bicarbonate to help performance.
Tie Free TMC Paste (Peak Performance Nutrients)
ExerciseExercise
MuscleMuscle
RecoveryRecovery
StressStress
Tie Free TMC Paste is a sodium bicarbonate free electrolyte supplement that supports replenishment of glycogen stores, muscle recovery, and muscles prone to tying up. It contains potassium chloride, potassium carbonate, and magnesium sulphate.
Tie Free TMC Powder (Peak Performance Nutrients)
ExerciseExercise
GrowthGrowth
MuscleMuscle
RecoveryRecovery
Tie Free TMC Powder is a sodium bicarbonate free electrolyte supplement that supports replenishment of glycogen stores, muscle recovery, and muscles prone to tying up. It contains potassium chloride, potassium carbonate, and magnesium sulphate.
Tie Up Event Pak (Peak Performance Nutrients)
ElectrolyteElectrolyte
MuscleMuscle
PerformancePerformance
RecoveryRecovery
Tie Up Event Pak by Peak Performance Nutrients is a sodium-bicarbonate-free powdered supplement that supports proper electrolyte balance and excess lactic acid buildup. It contains nutrients such as potassium, magnesium, and thiamine.

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