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Magnesium Oxide - Feed Ingredient

Magnesium Oxide is an inorganic compound composed of magnesium and oxygen. It is typically produced through the calcination of magnesite (magnesium carbonate) or by processing magnesium hydroxide derived from seawater. As a fine, white powder, Magnesium Oxide is valued for its high concentration of magnesium and stability under a range of conditions.

In equine diets, Magnesium Oxide serves as a supplemental source of magnesium, an essential mineral that supports muscle function, nerve conduction, and bone integrity. It is commonly included in feed formulations or supplements to help horses meet their daily magnesium requirements, especially when forages or other dietary components do not supply adequate levels. The bioavailability of Magnesium Oxide can vary depending on factors such as particle size and overall diet composition.

The following equine feeds, supplements and products contain Magnesium Oxide 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.
BioMare Cubes (Pryde’s EasiFeed)
BroodmareBroodmare
FoalFoal
GrowthGrowth
StallionStallion
BioMare Cubes by Pryde's EasiFeed is an extruded feed intended to support fertility and milk production in broodmares, and growth in weanlings, yearlings, and 2 year olds.
Blitz! Paste Comfort Blend (Peak Performance Nutrients)
ExerciseExercise
HerbHerb
RecoveryRecovery
StaminaStamina
Blitz! Paste Comfort Blend by Peak Performance Nutrients is a vitamin and mineral supplement intended to be provided before a horse event. It contains electrolytes and amino acids intended to aid performance and recovery.
BLK (NAF Equine)
Blood CellsBlood Cells
HealthHealth
ImmunityImmunity
YeastYeast
BLK from NAF Equine is intended for all horses and ponies. This supplement is meant to support the liver and kidneys to help detoxify the horse's body.
Blue Label 2X (Pennwoods)
HealthHealth
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Blue Label 2X by Pennwoods is a complete vitamin and mineral supplement designed for horses that contains added amino acids and yeast.
Blueprint Equine Premix GFC (Masterfeeds)
HealthHealth
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Blueprint Equine Premix GFC is a powdered vitamin and mineral supplement to balance forage-based diets. It contains organic trace minerals, yeast meant to support the digestive system and garlic to repel flies and insects.
Bonanza Tuff Horse (Mid-America Feeds)
EnergyEnergy
NutrientsNutrients
NutritionNutrition
VitaminsVitamins
Bonanza Tuff Horse by Mid-America Feeds is a pelleted complete feed intended for all types of horses.
Bone Builder (AniMed)
Bone HealthBone Health
GrowthGrowth
NutrientsNutrients
PerformancePerformance
AniMed's Bone Builder is a supplement that provides nutrients in balanced and sufficient amounts. It is meant to help achieve strong bones in young and growing horses and also for equine athletes.
Boost ‘Em (Bluebonnet Feeds)
HealthHealth
NutrientsNutrients
Ration BalancerRation Balancer
VitaminsVitamins
Boost 'Em is a pelleted diet balancer from Bluebonnet Feeds that contains protein, fat, vitamins and minerals to contribute to the general health of horses and livestock.
Boredom Buster (Equi-lete)
Mineral BalanceMineral Balance
NutrientsNutrients
NutritionNutrition
VitaminsVitamins
Boredom Buster by Equi-lete is a hanging treat containing vitamins and minerals. It is intended for stalled horses experiencing boredom.
BOS Equus (The Horse Food)
Grain FreeGrain Free
NutrientsNutrients
Omega 3-6-9Omega 3-6-9
ProteinProtein
BOS Equus by The Horse Food is a seed-meal-based feed high in protein and fat. It is intended for any type of horse for any age.
Brandon Plus Respiraticum (St.Hippolyt)
HerbHerb
RecoveryRecovery
RespiratoryRespiratory
VitaminsVitamins
Brandon Plus Respiraticum by St.Hippolyt is a pelleted supplement intended to support respiratory function in horses.
Breeda (Mitavite)
BroodmareBroodmare
GrowthGrowth
NutritionNutrition
StallionStallion
Breeda by Mitavite is a complete feed intended to meet the nutritional needs of young stock, breeding and performance horses.
Breeder Tub (Agassiz Feeds)
BroodmareBroodmare
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Breeder Tub by Agassiz Feeds is a mineral and vitamin lick designed for breeding beef cattle. It is molasses-based with no added salt and designed for free-choice use.
Breeders Choice Plus (DAC)
BroodmareBroodmare
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Breeders Choice Plus by DAC is a powdered vitamin and mineral supplement designed for breeding horses. It contains trace minerals, selenium, and probiotics.
Broodmare Yearling (Equine Advantage)
BroodmareBroodmare
GrainsGrains
PerformancePerformance
StallionStallion
Broodmare Yearling is formulated to help promote healthy growth and development in horses and ponies. This feed is ideal for broodmares, lactating mares, and breeding stallions to provide essential nutrients.
Build Up Conditioning Mix (Dodson & Horrell)
Caloric EnergyCaloric Energy
FatFat
NutritionNutrition
Weight IssuesWeight Issues
Build Up Conditioning Mix is a textured feed designed for horses that need to gain some weight or horses prone to weight loss. This feed includes vitamins and minerals, an elevated level of protein, and fibre to help with optimal digestion.
Builda (Mitavite)
Complete FeedComplete Feed
Coat QualityCoat Quality
Hoof HealthHoof Health
NutritionNutrition
Builda by Mitavite is a complete feed intended to maintain or build condition.
CADENCE Textured Feed (BUCKEYE Nutrition)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
Competition HorsesCompetition Horses
ToplineTopline
CADENCE™ Textured Feed is a palatable, calorie-dense feed formulated to meet the energy requirements of performance horses. It provides 10% fat with 25% NSC.
CADENCE™ Ultra Sweet Pelleted Feed (BUCKEYE Nutrition)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
DigestionDigestion
FlavorFlavor
CADENCE™ Ultra Sweet Pelleted Feed is a 14% fat and 14% fibre feed designed to provide high-calorie density. It is a sweet feed that contains 22% NSC with added cane molasses.
Caliber Mare & Foal Ration (Co-op)
BroodmareBroodmare
GrowthGrowth
LactationLactation
NutritionNutrition
Caliber Mare & Foal Ration is a high protein feed intended for broodmares and growing foals. It is designed with higher nutrient density to meet the needs of gestating and lactating mares.
Caliber Performance Horse Mineral (Coop Agro)
Amino AcidAmino Acid
Organic Trace MineralsOrganic Trace Minerals
PrebioticPrebiotic
VitaminsVitamins
Caliber Performance Horse Mineral is a vitamin and mineral supplement for horses with added amino acids, prebiotics, molasses and vegetable fat. It also contains corn distillers’ grains and alfalfa.
Caliber Performance Horse Ration (Co-op)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
ProteinProtein
Caliber Performance is a high energy textured feed intended for mature performance horses. It provides high protein (15.5%) and moderate fat (5.5%) content.
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.
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.
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.
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.
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.

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