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Calcium - Feed Ingredient

Calcium is an essential macromineral required for numerous physiological functions in horses, including bone formation, muscle contraction, nerve transmission, and enzyme activation. It is a primary structural component of bones and teeth, with approximately 99% of the body’s calcium stored in the skeletal system.

In equine nutrition, calcium is commonly supplied through feed ingredients such as limestone (calcium carbonate) or dicalcium phosphate. It can also be added to feed formulations via high calcium feeds like alfalfa.

The following equine feeds, supplements and products contain Calcium 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.
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.
Optimum Digestive Health Pellets (Mad Barn)
DigestionDigestion
Feed EfficiencyFeed Efficiency
Gut HealthGut Health
ProbioticProbiotic
Optimum Digestive Health from Mad Barn is a probiotic and prebiotic supplement designed to support hindgut health in the horse. It helps to maintain a stable microflora and promote immune health.
Optimum Probiotic (Mad Barn)
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
ProbioticProbiotic
Mad Barn's Optimum Probiotic is a pure 5-strain probiotic supplement in a powdered format. It provides 20 billion CFU per serving of L. acidophilus, L. fermentum, L. casei, L. plantarum, and L. farciminis.
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.
Trace Mineral Pak (Mad Barn)
Coat QualityCoat Quality
ExerciseExercise
Hoof HealthHoof Health
Organic Trace MineralsOrganic Trace Minerals
Trace Mineral Pak from Mad Barn is a balanced equine supplement providing 100% organic (chelated) trace minerals. Ingredients include selenium, zinc, copper, and manganese.
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.
Rancher’s Complete Pellet (Trouw)
Caloric EnergyCaloric Energy
HealthHealth
NutrientsNutrients
NutritionNutrition
Rancher's Complete Pellet by Trouw Nutrition is a complete feed intended to meet the nutritional needs of all horse types.
Rancher’s Sweet – Texture (Trouw)
Gut HealthGut Health
HealthHealth
NutrientsNutrients
NutritionNutrition
Rancher's Sweet Texture by Trouw is a sweet feed intended for horses in light to medium work.
Ration Balancer (Woody’s Horse Nutrition)
DigestionDigestion
Grain FreeGrain Free
ProteinProtein
Ration BalancerRation Balancer
Woody’s Feed Ration Balancer is a concentrated, pelleted feed intended to balance a forage-based diet. It provides chelated trace minerals and added probiotics. This feed is intended for all horses and ponies at any level of work.
Ration Balancer Original (Lifeline)
DigestionDigestion
Grain FreeGrain Free
HealthHealth
Ration BalancerRation Balancer
Ration Balancer Original by Lifeline is a grain-free pelleted supplement intended for horses who are sensitive to carbohydrates.
Ration Balancer Pellets (Ritchie Smith – Harmony)
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
ProteinProtein
Ration BalancerRation Balancer
Ration Balancer Pellets from Ritchie Smith's Harmony is a low starch, low sugar product that is a source of protein. It can be supplied to any horse and can help meet protein requirements when forage doesn't.
Re-Leve (Kentucky Equine Research)
HealthHealth
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
MuscleMuscle
KER Re-Leve is a high-energy, low-starch (10%) horse feed intended to support exercise performance and muscle function. It provides energy from high-fat sources such as rice bran and soybean oil.
Re-Leve Cubes (Saracen Horse Feeds)
Complete FeedComplete Feed
FiberFiber
ProteinProtein
UlcersUlcers
Re-Leve Cubes is a pelleted feed formulated for horses that have ulcer issues, need a low starch diet, or have nervous temperaments.
Re-Leve Sport (Kentucky Equine Research)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
Grain FreeGrain Free
Re-Leve Sport is a beet-pulp based feed intended for equine athletes. It contains high-fibre and high-fat energy sources such as soyhulls, rice bran and vegetable oils.
Reasons (Buckeye)
JointsJoints
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Buckeye REASONS™ Joint Support Treats is an equine supplement in a palatable treat format that provides glucosamine, chondroitin sulfate, and MSM. These treats are intended for all horses and ponies.
ReBuild (Pryde’s EasiFeed)
MuscleMuscle
Omega 3-6-9Omega 3-6-9
Skin + HairSkin + Hair
ToplineTopline
ReBuild by Pryde's EasiFeed is a pelleted supplement intended to help build topline and condition in all horse types.
Recharge Mash (Krafft)
DigestionDigestion
EnergyEnergy
Gut HealthGut Health
RecoveryRecovery
Recharge Mash by Krafft is a an oat-free mash intended to increase water intake in horses requiring a fast recovery from exercise, travel, stress or digestive upset.
Recuperate (Hygain)
ElectrolyteElectrolyte
ExerciseExercise
HydrationHydration
VitaminsVitamins
Recuperate from Hygain is a supplement for horses that is intended to provide B vitamins and electrolytes. It is meant to help with exercise, muscle function, and hydration.
Red Cal (Natural Horse Vet)
CalmingCalming
ElectrolyteElectrolyte
Mineral BalanceMineral Balance
NutrientsNutrients
Red Cal by Natural Horse Vet is a granular supplement that is intended for all life stages of horses and other livestock that provides salt, minerals, and electrolytes.
Red Cal GROW (Natural Horse Vet)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
NutrientsNutrients
Red Cal GROW by Natural Horse Vet is a granular supplement with added biotin, lysine, and methionine. It is intended for all life stages of horses and other livestock. It provides salt, minerals, and electrolytes.
Red Cal HERBAL (Natural Horse Vet)
ElectrolyteElectrolyte
HerbHerb
Mineral BalanceMineral Balance
VitaminsVitamins
Red Cal HERBAL by Natural Horse Vet is a granular supplement with added natural flavours that is intended for all life stages of horses and other livestock that provides salt, minerals, and electrolytes.
Red Cal Hi-MAG (Natural Horse Vet)
ElectrolyteElectrolyte
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
NutrientsNutrients
Red Cal Hi-MAG by Natural Horse Vet is a granular supplement with added magnesium oxide that is intended for all life stages of horses and other livestock. It provides salt, minerals, and electrolytes.
Refit (Excel Equine Feeds)
DigestionDigestion
MuscleMuscle
PerformancePerformance
RecoveryRecovery
Refit by Excel Equine Feeds is a pelleted supplement intended to support digestive health, muscle recovery, energy metabolism and immunity in performance horses.
Reform Muesli “G” (St.Hippolyt)
Complete FeedComplete Feed
EnergyEnergy
Gut HealthGut Health
NutritionNutrition
Reform Muesli "G" by St.Hippolyt is an oat-free feed intended for high energy and protein sensitive horses.
Refuel Gel (Foran Equine)
Competition HorsesCompetition Horses
ElectrolyteElectrolyte
MuscleMuscle
PerformancePerformance
Refuel Gel from Foran Equine is intended for performance horses. This supplement is meant to support rehydration, protein use, energy use, and muscle recovery.
Refuel Liquid (Foran Equine)
Competition HorsesCompetition Horses
ElectrolyteElectrolyte
ExerciseExercise
RecoveryRecovery
Refuel Liquid from Foran Equine is intended for performance horses. This supplement is meant to support rehydration through the addition of electrolytes.
Regain (Hygain)
ElectrolyteElectrolyte
HydrationHydration
Mineral BalanceMineral Balance
MuscleMuscle
Regain from Hygain is an electrolyte supplement. It is meant to help hydrate horses after exercise and sweating to assist with muscle health.
Regener8 Cubes (Dodson & Horrell)
Competition HorsesCompetition Horses
NutritionNutrition
PerformancePerformance
RecoveryRecovery
Regener8 Cubes by Dodson & Horrell is a high protein feed that supports high performance horses and provides an additional elevated amount of vitamin E. This feed intends to help recovery specifically, with added amino acids and antioxidants to help in this process.
Regenerex (Basic Equine Nutrition)
Bone HealthBone Health
ExerciseExercise
JointsJoints
RecoveryRecovery
Regenerex is a joint and inflammation supplement from Basic Equine Nutrition. It is composed of MSM, Glucosamine, Calcium, Magnesium, Grape Seed Extract, Boswellia Extract, and Manganese.
Rejuvenaide Max Liquid (ProElite)
GrowthGrowth
HealthHealth
JointsJoints
MuscleMuscle
Rejuvenaide Max Liquid by Pro Elite is a liquid supplement formulated to support optimal joint and muscle development in growing horses.
Rejuvenaide Max Pellets (ProElite)
Bone HealthBone Health
FoalFoal
GrowthGrowth
JointsJoints
Rejuvenaide Max by ProElite is a pelleted supplement intended to support the joint and tendon development in foals and growing horses.
Release (Hygain)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
HealthHealth
Weight IssuesWeight Issues
Release by Hygain is a high-energy textured feed intended for performance horses. Release contains chelated minerals and natural vitamin E intended to support hard keepers.
Reliance® Pelleted Horse Feed (Southern States)
Complete FeedComplete Feed
ExerciseExercise
HealthHealth
NutritionNutrition
Reliance® Pelleted Horse Feed is formulated for adult horses at maintenance or in light work. It provides 3.5% fat, 15% fiber, and 11% protein with energy sources including wheat middlings, corn meal, soybean hulls and cane molasses.
ReLyte (Enviro Equine)
Amino AcidAmino Acid
MuscleMuscle
PerformancePerformance
RecoveryRecovery
ReLyte by Enviro Equine is a supplement intended to support muscle function, energy metabolism and promote recovery following strenuous exercise in horses. It is formulated for horses in hard work or horse that are travelling.
Renew Gold (Manna Pro)
FatFat
FiberFiber
Omega 3-6-9Omega 3-6-9
ProteinProtein
MannaPro Renew Gold is a stabilized rice bran supplement with CoolStance® coconut meal, flaxseed, and yeast. This high-fat (17%) feed provides caloric energy without excess sugars and starches.
Renew Gold Senior (Manna Pro)
Caloric EnergyCaloric Energy
JointsJoints
PerformancePerformance
SeniorSenior
Renew Gold Senior from Manna Pro is an extruded pellet that combines stabilized rice bran, CoolStance® Coconut Meal, ground peas, and stabilized ground whole flax. It also contains added glucosamine and chondroitin sulphate for joint support.
Renew Gold Xtra (The Phoenix Company)
Gut HealthGut Health
HealthHealth
JointsJoints
UlcersUlcers
Renew Gold Xtra by The Phoenix Company is a joint and gut health supplement formulated for performance horses and active seniors. It provides cool, steady energy while supporting optimal digestive function.
Repair Daily Formula (Red Hot Equine Aminos)
Amino AcidAmino Acid
MuscleMuscle
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Repair Daily Formula by Red Hot Equine Aminos is a powdered supplement formulated with amino acids, trace minerals, and electrolytes. It is specifically designed to support muscle recovery in horses.
RepleniMash (Purina)
DigestionDigestion
HydrationHydration
PerformancePerformance
VitaminsVitamins
RepleniMash from Purina is a mash that is intended to support recovery, coat health, digestion, and hydration. It is meant for any life stage performance horse.
Rescue Aid (DAC)
DigestionDigestion
Gut HealthGut Health
HealthHealth
ProbioticProbiotic
Rescue Aid by DAC is a powdered supplement designed to support gut health and immune function in horses. It is formulated with probiotics to help maintain a healthy digestive system.
Rescue Aid Paste (DAC)
Gut HealthGut Health
HealthHealth
HindgutHindgut
ProbioticProbiotic
Rescue Aid Paste by DAC is a gut-health supplement formulated to support hindgut function in horses. It contains probiotics to help maintain a healthy digestive environment.
Resolve (Dunstan)
Complete FeedComplete Feed
FiberFiber
JointsJoints
NutritionNutrition
Resolve by Dunstan is a low starch feed intended to meet the nutrient requirements of horses and provide joint support.
Resolve (Tribute)
EnergyEnergy
ImmunityImmunity
MuscleMuscle
PerformancePerformance
Resolve is a pelleted complete feed from Tribute that is formulated to provide high-fat and high-fibre content with an NSC of 17.5%. It provides added Vitamin E which can support antioxidant status.
Respiratory Balancer (Horslyx)
Competition HorsesCompetition Horses
Hoof HealthHoof Health
Mineral BalanceMineral Balance
RespiratoryRespiratory
Respiratory Balancer from Horslyx is intended for performance and active horses of all ages and breeds. This balancer is designed to support a healthy respiratory system, immunity, and hoof health.
Respond High Grain Formula (Nutrena)
Competition HorsesCompetition Horses
EnergyEnergy
GrainsGrains
Weight IssuesWeight Issues
Respond High Grain Formula is a sweet feed style complete feed formulated for the high energy requirements of racehorses. It provides 12% protein and 6% fat with low levels of fibre.
RestorePRO Paste (Horse Logic Pro) – [Discontinued]
Competition HorsesCompetition Horses
ElectrolyteElectrolyte
HealthHealth
HydrationHydration
RestorePRO Paste from Horse Logic Pro is an electrolyte in paste form for horses. RestorePRO Paste contains ingredients intended to support mineral and hydration levels in horses.
Revive Senior (Bluegrass Horse Feed)
Complete FeedComplete Feed
JointsJoints
SeniorSenior
Weight IssuesWeight Issues
Revive Senior from Bluegrass Horse Feed is a feed that is meant to be highly digestible, support condition and joint health in senior horses. This feed can encourage weight gain and can be fed to horses with missing or worn teeth.
RG 14 (Hallway)
EnergyEnergy
FiberFiber
Gut HealthGut Health
ProteinProtein
RG 14 is a textured feed from Hallway, fortified with Stamm 30. This feed provides energy from digestible fibres and vegetable oil. RG 14 contains 14% protein, 6% fat, and 14% fibre.
Rhythm (Equi-lete)
DigestionDigestion
Gut HealthGut Health
HindgutHindgut
StressStress
Rhythm by Equi-lete is a pelleted gastric support supplement intended to support the foregut and hindgut in all horse types.
Rice Bran (Equis Feed)
Caloric EnergyCaloric Energy
FiberFiber
GrowthGrowth
Mineral BalanceMineral Balance
Equis Feed’s Rice Bran is a stabilized, pelleted concentrate feed for horses that is balanced using calcium carbonate. Rice bran is a good source of fat and protein if additional calories are required.
Rice Bran (Triple Crown)
EnergyEnergy
ExerciseExercise
FatFat
Weight IssuesWeight Issues
Triple Crown Rice Bran Natural is a high-fat horse supplement intended for underweight and hard-working performance horses. It contains added amino acids and calcium.
Ride & Relax (Allen & Page)
DigestionDigestion
Easy KeeperEasy Keeper
FiberFiber
NutritionNutrition
Ride & Relax from Allen & Page is a muesli mix with added mint for palatability. Ride & Relax contains added vitamins, minerals and probiotics. Ride & Relax is free from barely and molasses.
RiteTrac (Kentucky Equine Research)
ColicColic
DigestionDigestion
Gut HealthGut Health
UlcersUlcers
RiteTrac from KER is an equine supplement designed to support digestive tract health. It contains antacid ingredients to protect the stomach lining in the foregut as well as hindgut buffers.
Rocking G (Gatlin Feed)
FiberFiber
HealthHealth
NutrientsNutrients
NutritionNutrition
Rocking G by Gatlin Feed is a pelleted feed intended for horses and cattle.
Round-Up (Manna Pro) [Discontinued]
FiberFiber
Hay StretcherHay Stretcher
NutritionNutrition
ProteinProtein
Round-Up by Manna Pro is an alfalfa-based horse feed that contains 12% protein and 2% fat. It contains vitamins as well as organic and inorganic minerals.
RX Roughage – Pellet/Cube (Masterfeeds)
DentalDental
FiberFiber
Hay StretcherHay Stretcher
SeniorSenior
Masterfeeds Rx Roughage is a high fibre horse feed that comes in the form of pellets or cubes. It is used to add bulk to the diet as a hay stretcher or can be soaked for horses with dental issues such as seniors.

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