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Amino Acids - Feed Ingredient

Amino acids are the fundamental components of proteins and play essential roles in muscle development, enzyme activity, immune function, and overall metabolism in horses. They are classified as essential or non-essential based on whether they must be obtained from the diet or can be synthesized by the horse’s body. Essential amino acids, such as lysine, methionine, and threonine, must be provided in sufficient amounts to support protein synthesis and physiological functions.

In equine nutrition, amino acids are included in feeds and supplements to improve protein quality and ensure balanced nutrient intake. Lysine is considered the first limiting amino acid in horse diets, meaning its deficiency can restrict protein utilization even if total protein intake appears adequate. Methionine, another essential amino acid, is critical for hoof integrity, muscle maintenance, and metabolic processes but is often limited in plant-based protein sources. Proper amino acid balance is particularly important for young, growing horses, performance horses, and those on forage-based diets with lower-quality protein sources.

The following equine feeds, supplements and products contain Amino Acids 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.
DL-Methionine (Mad Barn)
Amino AcidAmino Acid
Coat QualityCoat Quality
Competition HorsesCompetition Horses
IngredientIngredient
Methionine is an essential amino acid that is important for maintaining healthy tendons, ligaments, and hooves. Growing horses and horses who are in heavy exercise have a higher demand for methionine and would benefit from supplementation.
L-Lysine (Mad Barn)
Amino AcidAmino Acid
ImmunityImmunity
IngredientIngredient
JointsJoints
Lysine is an essential amino acid that is important for forming strong collagen bonds. Lysine is the most commonly deficient amino acid in equine diets.
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.
Three Amigos (Mad Barn)
Amino AcidAmino Acid
MuscleMuscle
ProteinProtein
RecoveryRecovery
Three Amigos is an equine essential amino acid supplement containing lysine, methionine, and threonine in a 5:3:2 ratio. These are the three most common limiting amino acids in the horse's diet.
Threonine (Mad Barn)
Amino AcidAmino Acid
Gut HealthGut Health
MuscleMuscle
ToplineTopline
Threonine is an essential amino acid that is required to be supplied in equine diets as it cannot be synthesized endogenously. Threonine supplementation may improve nutrient absorption.
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.
Exceed 6-way (MVP)
Coat QualityCoat Quality
Gut HealthGut Health
Hoof HealthHoof Health
JointsJoints
Exceed 6-way from MVP is intended for joint, gastric, muscle, coat, hoof, and digestive health support. Some of the active ingredients include hyaluronic acid, MSM, biotin, zinc, copper, amino acids, probiotics, prebiotics, and a variety of herbs.
Exceed 6-Way Pellet (MVP)
JointsJoints
Mineral BalanceMineral Balance
MuscleMuscle
Omega 3-6-9Omega 3-6-9
Exceed 6-Way is a pelleted horse supplement containing MSM, glucosamine, hydrolyzed collagen, and yucca schidigera extract. It is formulated to support joints, hoof health, gut, and hair coat.
Excel (DePaolo Equine Concepts)
Gut HealthGut Health
HealthHealth
PrebioticPrebiotic
UlcersUlcers
Excel from DePaolo Equine Concepts is a supplement that aims to support and soothe the digestive tract in horses. It also can help with ulcers and the bacterial balance in the gut.
Excel Equine 10 (Excel Equine Feeds)
Easy KeeperEasy Keeper
HealthHealth
ImmunityImmunity
SeniorSenior
Excel Equine 10 is a textured feed from Excel Equine Feeds. This feed is intended for horses in low to moderate work, as well as mature horses.
Excel Equine 12 (Excel Equine Feeds)
FatFat
HealthHealth
ImmunityImmunity
PerformancePerformance
Excel Equine 12 is a textured feed from Excel Equine Feeds. Excel Equine 12 contains a fat content intended for horses in moderate workloads.
Excell E (Equistro)
AntioxidantAntioxidant
MetabolismMetabolism
NutrientsNutrients
VitaminsVitamins
Excell E is a liquid equine supplement providing bioavailable vitamin E, lysine, magnesium, and organic selenium. It is intended to support muscle tissue in performance or leisure horses.
Extra Strength Biotin 100 (NANRIC)
HealthHealth
Hoof HealthHoof Health
NutrientsNutrients
SeniorSenior
Extra Strength Biotin 100 by NANRIC is a biotin supplement intended to support hoof health in mature horses.
EZ (Tribute)
CalmingCalming
ExerciseExercise
FatFat
FiberFiber
Tribute Equine EZ Pellets is a 20% fibre, 8% fat feed intended for hard keepers and mature horses with higher energy requirements. It is formulated with reduced sugar and starch content and provides a maximum 13.5% NSC.
Farrier’s Aid (GWF Nutrition)
FlavorFlavor
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Farrier's Aid by GWF Nutrition is a pelleted hoof supplement made with biotin, sulphur and zinc to help improve hoof quality. Farrier's Aid is intended to help maintain hoof integrity and support normal growth.
Farrier’s Best Friend (Pegasus)
Bone HealthBone Health
HealthHealth
Hoof HealthHoof Health
Skin + HairSkin + Hair
Farrier's Best Friend from Pegasus is meant to support hoof, skin, and hair health. This supplement contains biotin, zinc, methionine, and calcium.
Farrier’s Choice (Advanced Biological Concepts)
DigestionDigestion
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Farrier's Choice from Advanced Biological Concepts is a pelleted vitamin and mineral supplement. This supplement can contribute to proper digestion and hoof health and growth.
Farrier’s Formula Double Strength (Life Data Labs)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Farrier's Formula® Double Strength is a pelleted horse supplement formulated to support hoof health. It contains amino acids, biotin, and minerals at twice the concentration of the original Farrier's Formula.
Farrier’s Formula DS Plus Joint (Life Data Labs)
Hoof HealthHoof Health
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
Farrier's Formula DS Plus Joint by Life Data Labs is a pelleted supplement that intends to support hoof growth and joint support. It contains 20mg of biotin per serving and a high level of glucosamine.
Farrier’s Formula Hoof Supplement (Life Data Labs)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Farrier's Formula Hoof Supplement is a vitamin, mineral, and amino acid supplement that supports healthy hoof structure and growth. It is primarily composed of methionine, biotin and inorganic sources of zinc and copper.
Fat Cat (Vapco)
Amino AcidAmino Acid
EnergyEnergy
ToplineTopline
Weight IssuesWeight Issues
FAT-CAT is an equine supplement designed to support weight gain, shiny coats and hoof health. It contains corn oil, flaxseed oil, protein sources, biotin and several fermentation products.
Fat Maxx (Strictly Equine)
Coat QualityCoat Quality
FatFat
NutritionNutrition
Ration BalancerRation Balancer
Fat Maxx by Strictly Equine is a top dressing supplement, intended to meet nutritional requirements for horses daily needs. It is intended to support weight and improve coat quality.
Fat Smart (Matrix)
Coat QualityCoat Quality
EnergyEnergy
FatFat
Weight IssuesWeight Issues
Fat Smart by Matrix is a pelleted feed designed to supplement energy from fat and fiber sources. It contains 12% fat, 14% protein and 22% fiber.
Feed Up (Dunstan)
EnergyEnergy
FoalFoal
GrainsGrains
GrowthGrowth
Feed Up by Dunstan is a complete feed comprised of mixed cereals lightly covered in molasses. It is intended to be a highly palatable feed that provides energy in a usable form to growing horses.
Fiber & Fat Comfort (Meunerie Benjamin)
DigestionDigestion
FiberFiber
Gut HealthGut Health
ImmunityImmunity
Fiber & Fat Comfort by Meunerie Benjamin is a feed that is high in fiber and contains vitamins, minerals, and yeast. It is intended to support the immune system, gut health and digestion.
Fiber First (Excel Equine Feeds)
FatFat
FiberFiber
HealthHealth
NutritionNutrition
Fiber First from Excel Equine Feeds is a textured feed. This feed is intended to be high fat and high fat, with an increased beet pulp content.
Fibre Balancer (Dunstan)
GrowthGrowth
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
Fibre Balancer by Dunstan is a semi-concentrate feed, intended for young growing horses that have access to high quality forage.
Fibre Grow (Dunstan)
BroodmareBroodmare
FiberFiber
FoalFoal
LactationLactation
Fibre Grow by Dunstan is a low-starch, high-fibre pellet intended to meet the requirements of pregnant and lactating mares as well as young growing horses.
Fibre Plus (Dunstan)
Bone HealthBone Health
Complete FeedComplete Feed
FiberFiber
GrowthGrowth
Fibre Plus by Dunstan is a high fibre, low starch pelleted feed intended to meet the nutrient requirements of young growing horses.
Fibre Smart (Matrix)
Caloric EnergyCaloric Energy
FiberFiber
Gut HealthGut Health
HindgutHindgut
Fibre Smart by Matrix is a pelleted, complete feed with a higher fiber content of 22%. It provides 14% protein and 6% fat, and is designed to feed to horses in light - moderate work that require additional calories beyond forage.
Fibromega Cubed (Meunerie Benjamin)
Complete FeedComplete Feed
Coat QualityCoat Quality
FiberFiber
Gut HealthGut Health
Fibromega Cubed from Meunerie Benjamin is a complete feed that is high in fiber. It is intended to help with gastric health, coat and hoof health, and immunity.
Finisher 14 (McCauley’s Equine Formulas)
Coat QualityCoat Quality
FatFat
FoalFoal
Weight IssuesWeight Issues
Finisher 14™ is a textured feed designed for performance horses and preparing sale horses. It provides high levels of vegetable oil and beet pulp to promote a healthy coat appearance.
Fire-Fighter Non-GMO (Daily Dose Equine)
Easy KeeperEasy Keeper
HealthHealth
NutrientsNutrients
Weight IssuesWeight Issues
Fire-Fighter Non-GMO by Daily Dose Equine is a low NSC (10%) forage balancer intended for picky eaters needing to lose weight and horses with sensitive stomachs.
Flexi Time (Capstone Horse Feed)
BroodmareBroodmare
EnergyEnergy
NutritionNutrition
PerformancePerformance
Flexi Time by Capstone Horse Feed is an oat-free feed intended for breeding, racing and performance horses.
Flies-A-Way (MVP)
Coat QualityCoat Quality
HealthHealth
Skin + HairSkin + Hair
YeastYeast
Flies-A-Way by MVP is a pelleted supplement that contains ingredients such as garlic and apple cider vinegar that intend to help repel biting insects. It also includes diatomaceous earth that intends to help prevent fly larvae from hatching in the manure.
Foal Foundation (Tribute Equine)
FoalFoal
GrowthGrowth
PrebioticPrebiotic
ProbioticProbiotic
Tribute Foal Foundation™ is a milk-based pellet for foals up to three months of age to supplement the nutrients provided in mare's milk. The smaller pellet size helps to transition the foal to solid feeds.
Foal Milk Bits (Hoffman’s Horse Products)
FiberFiber
FoalFoal
HealthHealth
NutritionNutrition
Foal Milk Bits from Hoffman's Horse Products is a pelleted feed for foals. Foal Milk Bits is intended to supplement mare's milk. Foal Milk Bits may provide extra nutrition to foals who require additional calories.
Foal Milk Replacer (Hoffman’s Horse Products)
FatFat
FoalFoal
HealthHealth
NutritionNutrition
Foal Milk Replacer from Hoffman's is intended to replace or supplement a mare's milk. This milk replacer is highly palatable and intended to meet growing foals requirements.
Foal Starter (Buckeye)
EnergyEnergy
FoalFoal
PrebioticPrebiotic
ProteinProtein
Buckeye Foal Starter is a milk-based pellet that can be used as a free-choice transition or creep feed for foals under three months of age. It provides digestible fibre and protein sources.
Foal Starter Paste (DAC)
FoalFoal
HealthHealth
PrebioticPrebiotic
ProbioticProbiotic
Foal Starter Paste by DAC is a gut- and joint-health supplement formulated to support the overall well-being of young foals. It contains a blend of prebiotics, probiotics, and amino acids designed to promote a healthy developing microbiome and encourage proper growth and development.
Focus HF (Source Inc)
HealthHealth
Hoof HealthHoof Health
NutrientsNutrients
Skin + HairSkin + Hair
Focus HF by Source Inc is a hoof supplement intended to support hoof growth, texture and strength in horses.
FootWise (Wiser Concepts)
Amino AcidAmino Acid
Coat QualityCoat Quality
Hoof HealthHoof Health
Mineral BalanceMineral Balance
FootWise from Wiser Concepts is a hoof and coat supplement that contains minerals and amino acids. It is meant to aid in skin and coat health and healthy hooves.
Forcevital (Dynavyte)
CirculationCirculation
HerbHerb
PerformancePerformance
RespiratoryRespiratory
Forcevital by Dynavyte is a herb based supplement intended to support a healthy respiratory and circulatory system in horses.
ForeCalm Paste (Forefront Equine)
CalmingCalming
HerbHerb
NutrientsNutrients
StressStress
ForeCalm Paste is a calming supplement intended for horses and ponies involved in stressful situations. It contains magnesium , taurine, L-Tryptophan, thiamine, and organic hemp seed.
ForeCalm Powder (Forefront Equine)
Amino AcidAmino Acid
CalmingCalming
HerbHerb
StressStress
ForeCalm Powder is a calming supplement intended for horses and ponies involved in stressful situations. It contains taurine, magnesium, organic hemp, raspberry leaf, thiamine, and tryptophan.
Formula 2 Equine Supplement (Dr. Reeds) – [Discontinued]
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Dr. Reeds Formula 2 is a now-discontinued vitamin/mineral supplement for horses with higher NSC content than Formula 1. This supplement used a combination of organic and inorganic trace minerals and contained wheat and molasses.
Formula Calm B (DAC)
CalmingCalming
Competition HorsesCompetition Horses
PerformancePerformance
VitaminsVitamins
Formula Calm B from dac is intended to promote balanced behaviour in horses. This supplement is intended to help horses relax. Formula Calm B contains B-Vitamins, Magnesium and Tryptophan.
Fort-EQ – Celebrite (La Coop)
AntioxidantAntioxidant
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Fort-EQ is a pelleted equine supplement produced by La Coop from Québec, Canada. It is advertised to provide major minerals, minor elements, vitamins, and amino acids for horses.
Fortify (Excel Equine Feeds)
FiberFiber
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
Fortify from Excel Equine Feeds is a textured feed intended for horses in all stages of life. This feed contains 13% protein and 8% fat. Fortify is intended for horses in any level of work.
Foundation Formula (DAC)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Foundation Formula from dac is a hoof supplement that is meant to encourage hoof growth, health, strength and frog health.
Frisky Foal (Masterfeeds)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
ProteinProtein
Masterfeeds 17% Frisky Foal is a pelleted transition feed used to wean nursing foals off of milk and onto solid feed. It provides elevated protein content to support growth.
Full Stride (Pureform)
Hoof HealthHoof Health
JointsJoints
SeniorSenior
Skin + HairSkin + Hair
Pureform Full Stride is a joint and bone supplement for horses containing MSM, Glucosamine, DMG, amino acids, vitamins and minerals. The formula is advertised to maintain cartilage, tendons, muscle, skin, hair and hooves.
Full Support Mini (Pureform)
DigestionDigestion
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
Pureform Full Support Mini is a vitamin/mineral supplement intended for miniature horse breeds. It contains ingredients to support joint health, B-vitamins, as well as organic and inorganic minerals.
Furlong (Barastoc)
Amino AcidAmino Acid
Bone HealthBone Health
PerformancePerformance
RecoveryRecovery
Furlong by Barastoc is a oat ration that is meant for racing horses. It contains vitamins, minerals, and amino acids. It can assist with bone health, recovery, and gut health.
Futurity Blend 14 (Woody’s Feed)
BroodmareBroodmare
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
LactationLactation
Woody's Futurity Blend 14 is a high starch feed with 14% protein and 4.5% fat, targeted to broodmares and foals. It is formulated to support gestation, lactation and growth.
G.O. Big (Peak Performance Nutrients)
ExerciseExercise
GrowthGrowth
MuscleMuscle
RecoveryRecovery
G.O. Big by Peak Performance Nutrients is a muscle-building, strength, and recovery supplement. It contains a blend of amino acids to promote long-term, lean muscle mass on horses.

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