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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.
Caliber Senior & Special Care Horse Ration (Co-op)
Complete FeedComplete Feed
Metabolic SyndromeMetabolic Syndrome
NutritionNutrition
Organic Trace MineralsOrganic Trace Minerals
SeniorSenior
Caliber Senior & Special Care Horse Ration is formulated to meet the nutritional requirements of senior horses, hard keepers or horses with dental issues. It is designed to provide energy from fat and digestible fibre sources and has a higher feeding rate.
Caliber Working Horse Ration (CO-OP)
Complete FeedComplete Feed
ExerciseExercise
Gut HealthGut Health
Organic Trace MineralsOrganic Trace Minerals
Caliber Working Horse Ration is a complete pelleted feed formulated to meet the needs of working horses. It is an energy-dense feed with a lower feeding rate.
Calm (Cavalor)
CalmingCalming
HerbHerb
NutrientsNutrients
StressStress
Cavalor Calm is a powdered calming equine supplement composed of B vitamins, tryptophan, and magnesium intended to support mood balance. This makes it ideal for young or nervous horses and ponies.
Calm Performer (Barastoc)
EnergyEnergy
Gut HealthGut Health
Mineral BalanceMineral Balance
VitaminsVitamins
Calm Performer from Barastoc is a pelleted feed that provides energy and nutrients for low to moderate working horses. It is meant to support gut health, muscle health, and provide minerals and vitamins.
Calmer (TopSpec)
CalmingCalming
Competition HorsesCompetition Horses
PerformancePerformance
StressStress
Calmer from TopSpec is a caramel-flavoured supplement ideal for anxious horses and ponies or during stressful situations such as showing, travelling, and competing. This supplement contains yeast, B vitamins, magnesium, and tryptophan.
Calmex (Powder) (MVP)
Amino AcidAmino Acid
CalmingCalming
Mineral BalanceMineral Balance
StressStress
Calmex by MVP is a powdered supplement for horses that intends to support nervous system function to minimize anxious behaviour. Its intended use is for competition, training and trailering.
Calmex-V (MVP)
Amino AcidAmino Acid
CalmingCalming
HerbHerb
StressStress
Calmex-V by MVP is a powdered supplement for horses that contains ingredients such as valerian root and tryptophan that intend to help support balanced behaviour.
Calminex (Basic Equine Nutrition)
Amino AcidAmino Acid
CalmingCalming
Mineral BalanceMineral Balance
VitaminsVitamins
Calminex is marketed as a calming supplement that contains tryptophan, thiamin, niacin, and magnesium. It also contains yeast and prebiotics for gut health. This supplement may be beneficial for horses easily stressed or at a high performance level.
Calming Pellets (Formula 707)
CalmingCalming
HealthHealth
NutrientsNutrients
StressStress
Calming Pellets by Formula 707 is a calming supplement intended to support a balanced nervous system in horses.
Calming Pro Complete (Formula 707)
CalmingCalming
DigestionDigestion
Gut HealthGut Health
StressStress
Calming Pro Complete from Formula 707 is a pelleted calming supplement. It is meant to support digestion, stomach health, and nervous system health.
Calming PRO Paste (Horse Logic Pro)
CalmingCalming
Competition HorsesCompetition Horses
HealthHealth
ImmunityImmunity
Calming PRO Paste from Horse Logic Pro is a calming paste for horses. Calming Pro Paste contains L-tryptophan which is intended to decrease anxiety in horses during stressful situations.
CalmingPRO Pellets (Horse Logic Pro) – [Discontinued]
CalmingCalming
Competition HorsesCompetition Horses
HealthHealth
StressStress
CalmingPRO Pellets from Horse Logic Pro is a pelleted calming supplement for horses. CalmingPRO Pellets contain magnesium, thiamine, and L-tryptophan intended to have calming effects on horses.
Camelina Meal (Lozana Health)
Coat QualityCoat Quality
DigestionDigestion
Hoof HealthHoof Health
RecoveryRecovery
Camelina Meal by Lozana Health is a protein supplement intended to support overall health in all classes of horses.
Carb-Buster Non-GMO (Daily Dose Equine)
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
Ration BalancerRation Balancer
VitaminsVitamins
Carb-Buster Non-GMO by Daily Dose Equine is a premixed 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.
Carb-Guard – 12% Pelleted Horse Feed (Blue Seal)
Complete FeedComplete Feed
FiberFiber
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
Blue Seal Carb-Guard is a 12% protein and 8% fat pelleted complete feed with less than 11% NSC. It is formulated with various roughages for fibre as well as wheat middlings, corn germ, and dried distillers grains for energy.
Carb-X (Meal) (MVP)
AntioxidantAntioxidant
MetabolismMetabolism
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
Carb-X by MVP is a premixed supplement that intends to provide support to maintain healthy blood sugar levels. It contains magnesium oxide and magnesium proteinate ingredients that intend to support proper glucose metabolism.
CarbCare Performance (Legends)
Complete FeedComplete Feed
EnergyEnergy
FatFat
PerformancePerformance
Legends CarbCare Performance is a pelleted feed for adult performance horses engaging in moderate exercise. It provides 10% fat to meet energy requirements and support endurance.
CarbCare Show & Pleasure (Legends)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
ExerciseExercise
PerformancePerformance
Legends CarbCare Show & Pleasure is a pelleted feed for adult horses in light to moderate activity. It lists a maximum NSC of 20%, based on 15% starch and 5% sugar content.
Carbolyte (Excel Equine Feeds)
HealthHealth
IngredientIngredient
NutrientsNutrients
NutritionNutrition
Carbolyte from Excel Equine Feeds is a pelleted feed. This feed is intended for horses who require a reduced starch diet.
CFS Elevate ABF (Clarence Farm Services Limited)
Easy KeeperEasy Keeper
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
CFS Elevate ABF is a ration balancer that provides vitamins and minerals without significantly increasing calories in the diet. It is formulated with 12% protein and 4% fat, and can be fed alone or in combination with other feeds.
CFS Pro Horse 200 ABF (Clarence Farm Services Limited)
Complete FeedComplete Feed
Easy KeeperEasy Keeper
Mineral BalanceMineral Balance
VitaminsVitamins
CFS Pro Horse 200 ABF is a pelleted feed intended for leisure, pleasure, and performance horses. It contains no added fat and provides a medium energy density.
CFS Request ABF (Clarence Farm Services)
BroodmareBroodmare
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
GrowthGrowth
CFS Request ABF is a pelleted feed with added fat from vegetable oil intended to support the energy demands of performance, growing, and breeding horses. It contains a moderate level of fat (6%).
CFS Select ABF 30% (Clarence Farm Services Limited)
FoalFoal
GrowthGrowth
LactationLactation
Ration BalancerRation Balancer
CFS Select ABF 30% is an essential vitamin and mineral supplement with 30% protein content. It is intended for lactating mares and foals to support growth and development.
Chelates Plus (Doctor’s Choice Supplements)
HealthHealth
NutritionNutrition
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Chelates Plus is a supplement intended to provide greater nutrient absorbability. It is designed growing, mature, and breeding horses.
Chelator Minerals (Equi-Boss Performance)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Chelator Minerals from Equi-Boss Performance is a complete mineral and vitamin supplement that is intended to contribute to overall health.
Chestnut High Fibre Nuts (Chestnut Horse Feeds)
Easy KeeperEasy Keeper
FiberFiber
NutrientsNutrients
NutritionNutrition
Chestnut High FIbre Nuts from Chestnut Horse Feeds is a high fibre, low energy feed. Chestnut High Fibre Nuts is formulated with oatfeed, wheatfeed, and straw. This feed is intended for horses at maintenance or light work.
Chevinal (Foran Equine)
Competition HorsesCompetition Horses
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Chevinal from Foran Equine is a liquid supplement that is intended for all horses and ponies at any work level but specifically performance horses. This supplement is meant to balance nutritional requirements.
CJ (Platinum Performance)
ExerciseExercise
JointsJoints
Omega 3-6-9Omega 3-6-9
RecoveryRecovery
CJ by Platinum Performance is an equine joint supplement for performance and senior horses. Active ingredients include avocado-soy unsaponifiables (ASU), MSM, glucosamine, hyaluronic acid, and Boswellia serrata extract.
Classic (CFC Farm Home Center)
FiberFiber
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
VitaminsVitamins
Classic from CFC Farm Home Center is a pelleted horse feed that is meant for light working horses. It contains fiber, minerals and vitamins. It also has low sugar levels.
Classic 12 Plus (Manna Pro) [Discontinued]
BroodmareBroodmare
Complete FeedComplete Feed
NutritionNutrition
PerformancePerformance
Classic 12 Plus from Manna Pro is a pelleted feed designed for performance horses, stallions, and broodmares. Classic 12 Plus provides 12% crude protein, 6% crude fat, 8% crude fibre, and uses a mix of organic and inorganic trace minerals.
Classic Fibre Mix (Dodson & Horrell)
FiberFiber
FlavorFlavor
GrainsGrains
NutritionNutrition
Classic Fibre Mix by Dodson & Horrell is a textured feed meant to supplement additional fibre into the diet, with an elevated level of 18%. This feed also includes a lower starch content to lessen excitability and can be used for horses and ponies.
Classic Finish (Quality Feeds)
BroodmareBroodmare
EnergyEnergy
PerformancePerformance
StallionStallion
Classic Finish by Quality Feeds is a textured sweet feed containing beet pulp, it is intended for breeding and performance horses.
CM 16-10 Liberte (Nature Belisle)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
CM 16-10 Liberte by Nature Belisle is a mineral supplement intended for growing horses, horses at maintenance or in light work, and broodmares. It contains natural botanical extracts which can act as an insect repellent.
Colostrum Supplement (Manna Pro)
FoalFoal
GrowthGrowth
Gut HealthGut Health
ProteinProtein
Colostrum Supplement by Manna Pro is a colostrum additive designed to be fed to newborn calves, kids, lambs, foals, piglets, llama, alpacas, puppies and kittens. It is milk protein-based and fortified with added vitamins and minerals.
Combined 4-Way (Equerry’s)
DigestionDigestion
JointsJoints
Skin + HairSkin + Hair
VitaminsVitamins
Combined 4-Way by Equerry's is a powdered supplement that intends to support digestive, hoof, coat and joint health in senior or performance horses.
Comfort Mash (Red Mills)
BroodmareBroodmare
Gut HealthGut Health
HydrationHydration
NutritionNutrition
Comfort Mash from Red Mills is intended for broodmares, and horses that travel and compete regularly. This ready-to-use bran-mash is meant to support gut motility, hydration, and stimulates appetite.
Command (Barastoc)
AntioxidantAntioxidant
EnergyEnergy
Gut HealthGut Health
PerformancePerformance
Command from Barastoc is an oat-free muesli for performance horses that contains high levels of energy. It can contribute to antioxidants, immune health, and gut protection from stomach acid.
Competition 10 Cubes (Red Mills)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
NutritionNutrition
PerformancePerformance
Competition 10 Cubes from Red Mills is an oat-free feed intended for horses in moderate to heavy work and competition horses. This feed is designed to support performance, recovery, muscle development, and bone integrity.
Competition 10 Mix (Red Mills)
Complete FeedComplete Feed
NutritionNutrition
PerformancePerformance
RecoveryRecovery
Competition 10 Mix from Red Mills is intended for horses and ponies in light to heavy work and those travelling. This oat-free feed is meant to support performance, recovery, muscle development, and coat condition.
Competition 12 Cubes (Red Mills)
Competition HorsesCompetition Horses
EnergyEnergy
NutritionNutrition
StaminaStamina
Competition 12 Cubes from Red Mills is intended for horses in moderate to heavy work such as performance horses. This feed is meant to support recovery, muscle development, and body condition.
Competition 12 Mix (Red Mills)
Competition HorsesCompetition Horses
EnergyEnergy
NutritionNutrition
StaminaStamina
Competition 12 Mix from Red Mills is intended for horses in moderate to heavy work, those travelling, and those requiring fast-release energy. This feed is meant to support stamina and recovery for performance horses.
Competition Cubes (Dodson & Horrell)
Competition HorsesCompetition Horses
GrainsGrains
NutritionNutrition
PerformancePerformance
Competition Cubes by Dodson & Horrell is a feed for the performance horse with a protein content of 12%, a fat content of 5%, and a fiber content of 9.4%. This feed includes ingredients such as oats, wheatfeed, dried beet pulp, and rapeseed oil to support a healthy and active lifestyle.
Competition Mix (Dodson & Horrell)
Caloric EnergyCaloric Energy
GrainsGrains
MuscleMuscle
PerformancePerformance
Competition Mix by Dodson & Horrell is a feed designed to support the performance horse with 12% protein, 4.6% fat, and 11.6% fiber content. The feed ingredients supply organic B vitamins, organic amino acids, and yeast to provide added digestibility and support gut health.
Competitor (Barastoc)
AntioxidantAntioxidant
EnergyEnergy
Gut HealthGut Health
PerformancePerformance
Competitor from Barastoc is a pelleted feed for performance horses. It contains both slow and fast release energy, and it is highly digestible and promotes gut health. It also contains antioxidants.
Complement Advantage (Excel Equine Feeds)
FiberFiber
HealthHealth
NutrientsNutrients
NutritionNutrition
Complement Advantage by Excel Equine Feeds is a textured feed intended for hard keepers or horses in heavy training.
Complement Control (Excel Equine Feeds)
EnergyEnergy
HealthHealth
NutritionNutrition
PerformancePerformance
Complement Control by Excel Equine Feeds is a pelleted feed intended to provide nutrition with a low feeding rate for growing, performance, breeding and maintenance horses.
Complement Foundation (Excel Equine Feeds)
HealthHealth
ImmunityImmunity
NutrientsNutrients
NutritionNutrition
Complement Foundation by Excel Equine Feeds is a beet pulp based textured feed intended for all horse types.
Complete (Triple Crown)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
NutritionNutrition
PerformancePerformance
Triple Crown Complete is a high-fibre feed with beet pulp and added vitamins and minerals designed for performance horses. This feed provides 12% protein and 12% fat in a textured format.
Complete (Woody’s Feed)
Complete FeedComplete Feed
FatFat
FiberFiber
ProteinProtein
Woody's Complete is a grain-free, pelleted horse feed formulated to meet the needs of most adult horses. Energy sources include beet pulp, soybean hulls, alfalfa meal, rice bran, flaxseed, and vegetable oil.
Complete Horse 12 (Manna Pro)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
GrainsGrains
NutritionNutrition
Complete Horse 12 from Manna Pro is a pelleted feed for mature horses at maintenance or in light work. This feed is meant to be fed alongside hay and/or pasture. It contains 12% crude protein, 2% crude fat, and 24% crude fibre.

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