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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.
Stamina (Pryde’s EasiFeed)
EnergyEnergy
MuscleMuscle
PerformancePerformance
ToplineTopline
Stamina by Pryde's EasiFeed is an extruded sweet feed intended for racehorses.
Staminoats (Hallway)
BroodmareBroodmare
GrowthGrowth
LactationLactation
NutritionNutrition
Staminoats from Hallway is a cubed feed fortified with Stamm 30, formulated for broodmares and young growing horses. This feed provides 14% protein, 3% fat, and 11% fibre.
Stamm 30 (Hallway)
BroodmareBroodmare
FoalFoal
GrowthGrowth
StallionStallion
Stamm 30 from Hallway is a vitamin and mineral pellet formulated for growing, reproducing, recreational and performance horses. This can be fed alone to easy keepers, or used to top dress feed for horses not getting the full feeding rate of concentrate feeds. Stamm 30 is used in other Hallway feeds as the source of vitamins and minerals.
Starch Wise (ProElite)
Gut HealthGut Health
NutritionNutrition
PerformancePerformance
SeniorSenior
ProElite Starch Wise is a pelleted horse feed with a maximum 14.5% NSC. It is formulated with moderate levels of starch and sugar for mature show and performance horses.
Staypower Cubes (Dodson & Horrell)
Amino AcidAmino Acid
Caloric EnergyCaloric Energy
NutritionNutrition
StaminaStamina
Staypower Cubes by Dodson & Horrell is a feed designed for stamina sports, with a good amount of protein and fat and lower starch content for a more balanced release of energy. This feed includes electrolytes, vitamins and minerals, and key amino acids to support the equine athlete.
Staypower Muesli (Dodson & Horrell)
Amino AcidAmino Acid
Caloric EnergyCaloric Energy
NutritionNutrition
StaminaStamina
Staypower Muesli by Dodson & Horrell is a textured feed designed for stamina sports, with a good amount of protein and fat and lower starch content for a more balanced release of energy. This feed includes electrolytes, vitamins and minerals, and key amino acids to support the equine athlete.
Step 1 Start Right (Trouw Nutrition)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
LactationLactation
Step 1 Start Right is an extruded feed formulated to meet the nutritional demands of lactating broodmares, foals and weanlings. It can be fed to growing horses up to one year of age.
Step 2 Peak Performance – Sport (Trouw Nutrition)
Complete FeedComplete Feed
FatFat
PerformancePerformance
Weight IssuesWeight Issues
Step 2 Peak Performance - Sport by Trouw is an extruded, high-fat feed formulated to meet the energy demands of horses in heavy work, stallions, growing horses, and hard keepers. It provides 14% protein and 10% fat from vegetable oils.
Step 2 Peak Sweet (Trouw Nutrition) [DISCONTINUED]
Complete FeedComplete Feed
ExerciseExercise
FlavorFlavor
GrowthGrowth
Step 2 Peak Sweet is a textured, high-energy feed for horses in heavy work, stallions, growing horses, and hard keepers. It contains 14% protein and 10% fat.
Step 3 Classic Sweet (Trouw Nutrition)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
FlavorFlavor
Weight IssuesWeight Issues
Step 3 Classic Sweet is a textured sweet feed for mature horses in light to moderate work. It contains whole oats and added sugars to improve palatability.
Step 3 GenAPro (Trouw)
Complete FeedComplete Feed
FiberFiber
Hay StretcherHay Stretcher
Low NSC FeedsLow NSC Feeds
Trouw GenAPro (GAP) is an alfalfa-based, high fibre and low NSC feed with less than 10% sugar and starch content. GenAPro is designed as a partial or total hay replacer when quality forage is limited.
Step 4 Complete – Rocky Mountain Crunch (Trouw Nutrition) [DISCONTINUED]
DigestionDigestion
FiberFiber
Hay StretcherHay Stretcher
Ration BalancerRation Balancer
Step 4 Complete Rocky Mountain Crunch is an extruded, high-fibre feed used to partially replace forage. The kibbles contain 14% protein as well as essential vitamins and minerals.
Step 4 Low Sugar Lite (Trouw Nutrition)
Complete FeedComplete Feed
DigestionDigestion
FiberFiber
Low NSC FeedsLow NSC Feeds
Step 4 Low Sugar Lite by Trouw Nutrition is a high-fibre pelleted feed intended for horses who are prone to founder, sugar sensitivities, insulin resistance and metabolic disorders.
Step 5 Top Up Mineral (Trouw Nutrition)
HealthHealth
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
VitaminsVitamins
Step 5 Top Up Mineral by Trouw Nutrition is a loose mineral supplement intended for horses who need additional vitamins and minerals in their diet.
Step 6 Senior (Trouw Nutrition)
Complete FeedComplete Feed
DentalDental
SeniorSenior
Weight IssuesWeight Issues
Step 6 Senior is a pelleted and extruded feed intended for senior horses and hard keepers. It contains 5% fat, 16% protein and can be given to senior horses with dental issues.
Step 7 Top Up Supplement (Trouw Nutrition)
Easy KeeperEasy Keeper
Gut HealthGut Health
Ration BalancerRation Balancer
VitaminsVitamins
Step 7 Top Up Supplement by Trouw Nutrition is a ration balancer intended to be used when horses are not consuming a complete feed, such as corn, oats or barley. It can be used for over-conditioned horses, horses on pasture and horses with low energy requirements.
Step 8 High Fat (Trouw Nutrition)
Complete FeedComplete Feed
FatFat
PerformancePerformance
Weight IssuesWeight Issues
Step 8 High Fat - Cool Energy by Trouw Nutrition is a pelleted feed intended for performance horses or horses that required fat-sourced energy.
Step Right Horse Mineral (Trouw Nutrition) [DISCONTINUED]
Gut HealthGut Health
HealthHealth
Ration BalancerRation Balancer
VitaminsVitamins
Step Right Horse Mineral (formerly Step 7b Pro Equine Supplement) is a concentrated mineral and vitamin supplement for horses in a loose powdered format. It is intended for horses that are not consuming complete feed, horses on pasture, or easy keepers.
Stocked Up (Outlaw Feed)
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
YeastYeast
Stocked Up by Outlaw Feed is a textured supplement for horses that are intended to be fed to all ruminants. It contains a source of omega-3 fatty acids. It is meant to help reduce antibiotic use and support healthy skin.
Stomach Pellets (Leg Up Equine)
Stomach Pellets from Leg Up Equine is a pelleted gut supplement for horses. Stomach Pellets contain aloe vera and calcium carbonate intended to neutralize gastric acid.
Strategy (Ark Nutrition)
FatFat
HealthHealth
NutritionNutrition
ProteinProtein
Strategy by Ark Nutrition is an energy and protein supplement for horses. It is intended to support muscle development and meet fatty acid requirements from soybean meal, palm oil, flaxseed, and rice bran.
Strategy® Professional Formula GX (Purina Mills)
Complete FeedComplete Feed
ExerciseExercise
GrowthGrowth
HealthHealth
Strategy Professional Formula GX is a pelleted concentrate horse feed for all life stages. It provides 14% crude protein, 6% crude fat and 12.5% fiber.
Stress Pak (Select The Best)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
StressStress
Stress Pak by Select The Best is a powdered electrolyte supplement that provides the vitamins, minerals, and electrolytes necessary to replenish what is lost in sweat. This electrolyte is sugar-free.
Stress Relief (Krafft)
CalmingCalming
Mineral BalanceMineral Balance
StressStress
VitaminsVitamins
Stress Relief by Krafft is a supplement intended to help calm horses in stressful situations. It contains tryptophan, magnesium, and B vitamins.
Stretch Horse Pellets (West Feeds)
Caloric EnergyCaloric Energy
FatFat
GrainsGrains
ProteinProtein
Stretch Horse Pellets by West Feeds is a higher energy feed containing a minimum of 14% protein and a minimum of 6% fat content. This feed includes ingredients such as grain products, plant protein, and forage products.
Structure E Grain-Free (St.Hippolyt)
EnergyEnergy
Grain FreeGrain Free
Low NSC FeedsLow NSC Feeds
NutritionNutrition
Structure E by St.Hippolyt is a grain-free feed low in starch and sugar, and is intended for all types of horses and ponies.
Stud Balancer (Heygates Feeds)
BroodmareBroodmare
DigestionDigestion
FoalFoal
StallionStallion
Stud Balancer is a high-protein ration balancer intended for breeding stock, such as broodmares, stallions, and young horses. It is meant to be fed alongside forages or other feeds.
Stud Cubes (Red Mills)
BroodmareBroodmare
FoalFoal
GrowthGrowth
StallionStallion
Stud Cubes from Red Mills is a feed intended for stallions, breeding mares, and youngstock during growth and development. This feed is meant to support milk and colostrum production and fertility.
Stud Mix (Red Mills)
BroodmareBroodmare
GrowthGrowth
NutritionNutrition
StallionStallion
Stud Mix from Red Mills is a feed intended for stallions, broodmares, and growing youngstock. This feed is meant to supports fertility, milk and colostrum production, fetal development, and optimal body condition.
Stud Muesli (Dodson & Horrell)
BroodmareBroodmare
LactationLactation
NutritionNutrition
StallionStallion
Stud Muesli by Dodson & Horrell is a textured feed designed specifically for fertility and fetal development. This feed includes an elevated level of vitamin E and an elevated protein level to aid in the increased metabolism rate.
Stud N Spell (Barastoc)
GrowthGrowth
ImmunityImmunity
Mineral BalanceMineral Balance
VitaminsVitamins
Stud N Spell from Barastoc is a pellet that is meant to support growth of young horses and immunity. It contains low starch, vitamins, and minerals.
Stud Time (Capstone Horse Feed)
BroodmareBroodmare
GrowthGrowth
ProteinProtein
StallionStallion
Stud Time by Capston Horse Feed is a muesli style feed intended for broodmares, stallions and growing horses.
SU-PER Anti-Oxidant Powder (Gateway Products)
AntioxidantAntioxidant
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
SU-PER Anti-Oxidant Powder by Gateway Products is an anti-oxidant supplement anti-oxidant to support general health, energy production, and immune response for horses under stress or recovering from illness.
SU-PER B-Plex Paste (Gateway Products)
EnergyEnergy
PerformancePerformance
StressStress
VitaminsVitamins
SU-PER B-Plex Paste by Gateway Products is a performance supplement to provide more energy, increased stamina, and improved focus. It contains all of the major B-Complex vitamins together in one supplement.
SU-PER B-Plex Powder (Gateway Products)
EnergyEnergy
StaminaStamina
StressStress
VitaminsVitamins
SU-PER B-Plex Powder by Gateway Products is a performance supplement to provide more energy, increased stamina, and improved focus. It contains all of the major B-Complex vitamins together in one supplement.
SU-PER Bone Boost Powder (Gateway Products)
Bone HealthBone Health
BroodmareBroodmare
GrowthGrowth
PerformancePerformance
SU-PER Bone Boost Powder by Gateway Products is a supplement to help maintain healthy bone structure and function. It contains calcium, phosphorus, magnesium, and trace minerals designed for performance horses, broodmares and growing horses.
SU-PER Cell Builder Liquid (Gateway Products)
Blood CellsBlood Cells
CirculationCirculation
HealthHealth
VitaminsVitamins
SU-PER Cell Builder Liquid by Gateway Products is a supplement to support stamina, endurance, and blood cell health. It is a high-iron supplement that supports normal red blood cell production and helps promote healthy cells with high hemoglobin content.
SU-PER Form Pellets (Gateway Products)
HealthHealth
Mineral BalanceMineral Balance
ProbioticProbiotic
VitaminsVitamins
SU-PER Form Pellets by Gateway Products is a vitamin and mineral supplement that provides all the necessary nutrients. This supplement also includes additional amino acids and electrolytes and is meant for horses of all life stages.
SU-PER ImmunoBOOST Powder (Gateway Products)
AntioxidantAntioxidant
HerbHerb
ImmunityImmunity
NutrientsNutrients
SU-PER ImmunoBOOST Powder by Gateway Products is an immune supplement of anti-oxidants, vitamins and minerals, and herbal extracts. This supplement is for seniors, performance, and horses under consistent stress.
SU-PER Jug Paste (Gateway Products)
Amino AcidAmino Acid
EnergyEnergy
PerformancePerformance
VitaminsVitamins
SU-PER Jug Paste is an energy supplement meant to provide stamina, performance, and energy. This supplement offers vitamins and minerals, electrolytes, and amino acids to ensure proper nutrient levels before a race or restore balance.
SU-PER LaminAid Powder (Gateway Products)
Amino AcidAmino Acid
HerbHerb
Hoof HealthHoof Health
VitaminsVitamins
SU-PER LaminAid Powder by Gateway Products is a circulation supplement designed for horses suffering from laminitis/founder or at risk. This supplement helps to increase blood flow, support inflammatory responses, and provide nutrients to damaged tissues.
SU-PER Lyte Paste (Gateway Products)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
RecoveryRecovery
SU-PER Lyte Paste is an electrolyte paste supplement meant to provide essential electrolytes and trace minerals that horses may lose during exercise or hot conditions. This supplement can aid in electrolytic balance and proper hydration.
SU-PER Lyte Powder (Gateway Products)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
RecoveryRecovery
SU-PER Lyte Powder by Gateway Products is an electrolyte paste supplement meant to provide essential electrolytes and trace minerals that horses may lose during exercise or hot conditions. This supplement can aid in electrolytic balance and proper hydration.
SU-PER Mag Pro Powder (Gateway Products)
Bone HealthBone Health
CalmingCalming
Mineral BalanceMineral Balance
NutrientsNutrients
SU-PER Mag Pro Powder is a mineral supplement meant to support normal behaviour and provide a calming effect to horses that may have magnesium deficiencies. It can also help normal metabolic function and energy production.
SU-PER Meta-Balance Powder (Gateway Products)
Hoof HealthHoof Health
MetabolismMetabolism
Metabolic SyndromeMetabolic Syndrome
NutrientsNutrients
SU-PER Meta-Balance Powder is a supplement meant to support blood-glucose levels for healthy metabolic regulation. This supplement provides vitamins and minerals that help to maintain proper metabolism.
SU-PER Oxy-Up Powder (Gateway Products)
EnergyEnergy
Omega 3-6-9Omega 3-6-9
PerformancePerformance
YeastYeast
SU-PER Oxy-Up Powder by Gateway Products is a supplement to support stamina and endurance. This supplement contains octacosanol, which supports the muscles' ability to use oxygen more efficiently and slow the exhaust of the horses' oxygen reserve.
SU-PER PowerFlex H.A. Powder (Gateway Products)
HerbHerb
JointsJoints
RecoveryRecovery
VitaminsVitamins
SU-PER PowerFlex H.A. Powder by Gateway Products is a joint supplement containing antioxidants, joint nutrients, and hyaluronic acid. This supplement also helps to support the structural integrity of connective tissues.
SU-PER Pre-Race Paste (Gateway Products)
Competition HorsesCompetition Horses
EnergyEnergy
PerformancePerformance
RecoveryRecovery
SU-PER Pre-Race Paste is an energy and recovery supplement that can be given before, during, or after a competition. This supplement contains creatine, amino acids, herbal extracts, and antioxidants to help support both physical and mental performance.
SU-PER Sound Liquid (Gateway Products)
ExerciseExercise
JointsJoints
NutrientsNutrients
RecoveryRecovery
SU-PER Sound Liquid 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 Sound Plus Powder (Gateway Products)
FlavorFlavor
JointsJoints
NutrientsNutrients
VitaminsVitamins
SU-PER Sound Plus Powder by Gateway Products is a supplement to support and maintain healthy joint function, and it aids the structural integrity of connective tissues. This supplement contains elevated levels of MSM, hyaluronic acid, and chondroitin sulphate.

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