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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.
SU-PER Show Coat Powder (Gateway Products)
Coat QualityCoat Quality
Mineral BalanceMineral Balance
Skin + HairSkin + Hair
VitaminsVitamins
SU-PER Show Coat Powder is a supplement that supports a healthy coat and skin. This supplement contains flaxseed meal as a source of essential fatty acids and additional vitamins and minerals for better nutrient absorption.
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.
SU-PER Sound Powder (Gateway Products)
HealthHealth
JointsJoints
NutrientsNutrients
RecoveryRecovery
SU-PER Sound Powder 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 Tie Deny Paste (Gateway Products)
AntioxidantAntioxidant
ExerciseExercise
MuscleMuscle
RecoveryRecovery
SU-PER Tie Deny Paste by Gateway Products is a supplement designed for performance horses to aid in the prevention of tying up. This supplement works to quickly eliminate lactic acid and increase energy stores in muscles to lessen lactic acid production.
SU-PER Tie Deny Powder (Gateway Products)
AntioxidantAntioxidant
ExerciseExercise
MuscleMuscle
RecoveryRecovery
SU-PER Tie Deny Powder by Gateway Products is a supplement designed for performance horses to aid in the prevention of tying up. This supplement works to quickly eliminate lactic acid and increase energy stores in muscles to lessen lactic acid production.
SU-PER Tryptophane Powder (Gateway Products)
Amino AcidAmino Acid
CalmingCalming
Omega 3-6-9Omega 3-6-9
StressStress
SU-PER Tryptophane Powder by Gateway Products is a supplement to maintain calmness and support balanced behaviour. This supplement contains tryptophan, an amino acid that promotes a calming effect for nervous, excited, or stressed horses.
SUCCEED Digestive Conditioning Program (granules) (Freedom Health)
DigestionDigestion
Gut HealthGut Health
HealthHealth
RecoveryRecovery
SUCCEED Digestive Conditioning Program (granulated) is a dry, granular digestive supplement for horses. It consists of oat flour, oat oil, irradiated dried yeast, L-threonine, L-glutamine, and guar gum.
SUCCEED Digestive Conditioning Program (paste) (Freedom Health)
DigestionDigestion
Gut HealthGut Health
HealthHealth
RecoveryRecovery
SUCCEED Digestive Conditioning Program (paste) is a digestive supplement for horses that comes in paste form. It consists of oat oil, oat flour, sunflower oil, irradiated dried yeast, L-threonine, L-glutamine, and guar gum. Each syringe is one dose.
Summer Heat (Woody’s Horse Nutrition)
Competition HorsesCompetition Horses
DigestionDigestion
FiberFiber
PerformancePerformance
Woody’s Summer Heat is a complete feed formulated for performance horses in heavy to intense work. It contains 12.5% protein and 7.0% fat, and is made with oats, barley, molasses and beet pulp.
Summit Active (Hubbard Feeds)
GrowthGrowth
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Summit Active from Hubbard is a concentrated feed intended for performance horses. It provides 14% crude protein and contains grains, plant proteins, forage products, and vegetable oil.
Summit Senior (Hubbard Feeds)
Coat QualityCoat Quality
Gut HealthGut Health
NutrientsNutrients
SeniorSenior
Summit Senior from Hubbard is a complete feed intended for senior horses at maintenance with dental issues. It contains 14% crude protein and provides digestible energy and protein from mostly forage sources.
Summit® Classic + (Hubbard Feeds)
Complete FeedComplete Feed
Gut HealthGut Health
ImmunityImmunity
NutrientsNutrients
Summit Control+ from Hubbard is a concentrated feed intended for horses at multiple life stages and work levels. It contains 12% crude protein and energy sources from grain products, plant proteins, and forage.
Sunshine Plus Pelleted Horse Feed (Blue Seal)
Complete FeedComplete Feed
ProteinProtein
VitaminsVitamins
YeastYeast
Sunshine Plus is a high protein (30%) pelleted feed containing soybean meal and whey. Energy sources include cane molasses, wheat middlings, oil, and corn distillers grains.
Super 14 (Farnam)
Coat QualityCoat Quality
FatFat
Omega 3-6-9Omega 3-6-9
Skin + HairSkin + Hair
Farnam Super 14™ is an equine skin and coat supplement designed to provide fatty acids, amino acids, biotin, zinc, and other vitamins and minerals.
Super Amino 66 (Hygain)
Amino AcidAmino Acid
Mineral BalanceMineral Balance
MuscleMuscle
VitaminsVitamins
Super Amino 66 from Hygain is a protein supplement containing 10 amino acids. It is intended to support muscle health and also contains vitamins and minerals.
Super Horse 12-12 (Manna Pro)
BroodmareBroodmare
Complete FeedComplete Feed
NutritionNutrition
PerformancePerformance
Super Horse 12-12 from Manna Pro is a textured sweet feed formulated for performance horses, broodmares, and stallions. Super Horse 12-12 contains 12% crude protein, 6% crude fat, and 7% crude fiber.
Super Horse Performance 10 (Manna Pro)
ExerciseExercise
GrainsGrains
NutritionNutrition
PerformancePerformance
Super Horse Performance 10 from Manna Pro is available as a pellet or a textured feed. Super Horse Performance 10 contains 10% crude protein, 6% crude fat, 7% crude fibre, and uses a mix of organic and inorganic trace minerals.
Super So-Kalm Powder (Equine America)
Amino AcidAmino Acid
CalmingCalming
Mineral BalanceMineral Balance
StressStress
Super So-Kalm Powder from Equine America is a concentration and focus supplement for horses. It is intended to assist with calming and reducing stress and it contains minerals.
Super Weight Gain (Horse Guard)
Coat QualityCoat Quality
HealthHealth
NutritionNutrition
Weight IssuesWeight Issues
Super Weight Gain by Horse Guard, is a supplement intended for healthy weight gain and enhancing coat condition. This supplement contains full-fat soybeans, prebiotics, probiotics and a vitamin mineral package.
SuperFibra Classic (Purina)
Complete FeedComplete Feed
Easy KeeperEasy Keeper
FiberFiber
NutrientsNutrients
Purina SuperFibra Classic is a chunked feed designed to add fibre to the diet with 12.5% protein and 2% fat. It is intended for use in maintenance to lightly working horses.
SuperFibra Integri-T (Purina Canada)
Complete FeedComplete Feed
ExerciseExercise
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
SuperFibra Integri-T is a complete feed designed for horses that require a reduced NSC diet and are at maintenance or in light work. SuperFibra Integri-T does not contain corn, oats, barley, or molasses.
SuperFibra Integri-T (Purina)
ExerciseExercise
FiberFiber
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
SuperFibra Integri-T has a low NSC content (10%) which can be fed to horses that require a low starch/sugar diet. SupreFibra Integri-T is a pelleted feed that is designed for horses who are insulin resistant or have a history of tieing up.
SuperFibra Plus (Purina)
BroodmareBroodmare
Complete FeedComplete Feed
FatFat
GrainsGrains
Purina SuperFibra Plus is a complete horse feed that provides ~21% NSC in a chunk format. It is formulated for horses at maintenance or moderate work, breeding horses and yearlings.
SuperFibra Ultra (Purina)
Complete FeedComplete Feed
ExerciseExercise
Gut HealthGut Health
Metabolic SyndromeMetabolic Syndrome
Purina SuperFibra Ultra is a pelleted feed intended for horses at all life stages. It contains 13% crude protein and 6% fat.
SuperSport Amino Acid Supplement (Purina)
Amino AcidAmino Acid
PerformancePerformance
RecoveryRecovery
ToplineTopline
Purina® SuperSport® Amino Acid is a supplement intended for performance equine athletes. It provides 40% crude protein in a pelleted format to support muscle development.
Support One (Pureform)
AntioxidantAntioxidant
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
Pureform Support One is an equine supplement formulated to support joint, bone, and immune health. It contains Glucosamine, MSM, amino acids, complete vitamins, trace minerals, and anti-oxidants.
Support Pro (Formula 707)
CalmingCalming
DigestionDigestion
Gut HealthGut Health
UlcersUlcers
Support Pro from Formula 707 is a pelleted supplement that is intended to support digestion, stomach and hindgut health. It is also meant for calming or ulcer support.
SupportPRO (Horse Logic Pro) – [Discontinued]
Competition HorsesCompetition Horses
Gut HealthGut Health
HealthHealth
ImmunityImmunity
SupportPRO from Horse Logic Pro is a pelleted gut supplement. SupportPRO is intended to provide hindgut support to horses who struggle with gastric issues during periods of stress. SupportPRO contains 12% crude protein and 1.25% fat.
Supreme (Barastoc)
FatFat
PerformancePerformance
ProteinProtein
ToplineTopline
Supreme from Barastoc is a feed for horses that assists in the development of topline. It has low starch, high fat, high protein amounts and vitamins and minerals that is meant for performance horses.
SUPREME™ 10 Pelleted Feed (BUCKEYE Nutrition)-[Discontinued]
Complete FeedComplete Feed
Gut HealthGut Health
HealthHealth
Ration BalancerRation Balancer
SUPREME™ 10 Pelleted Feed is a now-discontinued feed that provided 10% crude protein in a fortified grain mix. It was formulated to support the nutritional needs of mature horses.
SUPREME™ 14 Pelleted Feed (BUCKEYE Nutrition)
Complete FeedComplete Feed
Gut HealthGut Health
NutritionNutrition
Ration BalancerRation Balancer
SUPREME 14 Pelleted Feed by Buckeye Nutrition is a complete feed with 14% crude protein. It is formulated to support the nutritional needs of mature horses in light to moderate work, seniors, and the breeding herd. SUPREME 14 contains a total of 28% NSC.
Surge Paste (Bluebonnet Feeds)
CirculationCirculation
CardiovascularCardiovascular
Hoof HealthHoof Health
RespiratoryRespiratory
Surge Paste by Bluebonnet Feeds is a paste supplement intended to support lung health and circulation in horses.
Surge Powder (Bluebonnet Feeds)
CirculationCirculation
Hoof HealthHoof Health
RespiratoryRespiratory
StressStress
Surge Powder by Bluebonnet Feeds is a powdered supplement intended to support blood circulation and lung health in horses experiencing intense work or stress.
Suspensory Saver (Figuerola Laboratories)
AntioxidantAntioxidant
HerbHerb
JointsJoints
RecoveryRecovery
Suspensory Saver by Figuerola Laboratories is a natural supplement designed to support tendon and ligament health. Formulated with collagen, MSM, and vitamin C, it helps promote cellular integrity and supports recovery.
Sweat Werks (HorseTech)
ExerciseExercise
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Sweat Werks from HorseTech is a supplement for horses that is meant to support sweat functions. It contains minerals and vitamins.
SweatAgain (AniMed)
Amino AcidAmino Acid
ElectrolyteElectrolyte
Mineral BalanceMineral Balance
VitaminsVitamins
SweatAgain from AniMed is a powdered electrolyte supplement. It contains amino acids, vitamins, minerals and more, which all contribute to a horse's ability to sweat normally and maintain a healthy body temperature.
Sweet 10 (Excel Equine Feeds)
Easy KeeperEasy Keeper
EnergyEnergy
HealthHealth
NutritionNutrition
Sweet 10 is a textured feed from Excel Equine Feeds. This feed is intended for easy keepers or horses in light work.
Sweet Feed (Ritchie Smith – Harmony)
Competition HorsesCompetition Horses
DigestionDigestion
FiberFiber
NutrientsNutrients
Sweet Feed from Ritchie Smith's Harmony is a textured horse feed intended for horses in moderate to heavy work. Sweet Feed contains 12% crude protein and 4% fat.
Sweet Mix (Dunstan)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
PerformancePerformance
Weight IssuesWeight Issues
Sweet Mix by Dunstan is a highly palatable oat free textured feed that contains molasses. It is formulated to be a medium-energy feed intended for working horses or those requiring additional calories for weight gain.
Sweetmax (Pegasus)
Amino AcidAmino Acid
GrainsGrains
MuscleMuscle
YeastYeast
Sweetmax from Pegasus is a sweet feed that contains electrolytes to support hydration, amino acids to support muscle growth and recovery, and yeast to support gut health. This feed is intended for any horse or pony at all work levels.
Symphony (A Horse of Course)
Gut HealthGut Health
HealthHealth
Hoof HealthHoof Health
ImmunityImmunity
Symphony from A Horse of Course is a powdered equine supplement. Symphony is intended to promote healthy gut function. This supplement is formulated with biotin, methionine, and zinc intended to support hoof growth.
Synergize (Tribute)
FatFat
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
PerformancePerformance
Synergize by Tribute is a pelleted feed intended for hard-keepers and horses with a heavy workload that are sensitive to sugar and starch.
Synergy (Thunderbrook)
Gut HealthGut Health
HealthHealth
HerbHerb
ImmunityImmunity
Synergy from Thunderbrook is a concentrated feed intended for all types of horses. Synergy contains prebiotics, herbs, and botanicals intended to support gut health.
Synergy Compete (SEB Equine)
HealthHealth
NutrientsNutrients
NutritionNutrition
PerformancePerformance
Synergy Compete by SEB Equine is a supplement intended to support overall health in performance horses.
TAB (Hallway)
Mineral BalanceMineral Balance
NutritionNutrition
ProteinProtein
VitaminsVitamins
Hallway Feed's TAB is a concentrated pelleted feed intended to balance the diet of horses fed alfalfa hay. It can be fed to horses at all life stages and has a lower feeding rate.
Textured Ration (Hoffman’s Horse Products)
Caloric EnergyCaloric Energy
DigestionDigestion
HealthHealth
NutritionNutrition
Textured Ration from Hoffman's is a textured feed for horses over 1 year of age. This feed is intended to increase fat absorption and digestion in horses. Hoffman's Textured Ration is 27.5% NSC.
Three Aminos (Herbs for Horses)
Amino AcidAmino Acid
PerformancePerformance
RecoveryRecovery
ToplineTopline
Three Aminoes is an essential amino acid supplement containing lysine, methionine, and threonine. These are the three most common limiting amino acids in the horse's diet.
Threonine
Amino AcidAmino Acid
Gut HealthGut Health
MuscleMuscle
ToplineTopline
Threonine is an essential limiting amino acid that is important for making mucin proteins in the gut. It plays a role in digestion, immune function, muscle growth, and more.
ThriveFeed Horse Feed
ForageForage
Gut HealthGut Health
HealthHealth
NutrientsNutrients
ThriveFeed is a pelleted horse feed composed of alfalfa meal, timothy grass meal, sorghum, soybean meal, rice bran and kelp meal. It provides 15% protein, 2.5% fat and 20% fiber.

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