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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.
Vitatude +Protein (Hestevard)
HealthHealth
MuscleMuscle
ProteinProtein
VitaminsVitamins
Vitatude +Protein by Hestevard is a multivitamin and protein supplement intended to help build muscle and support muscle function.
VMZ-25 Multi-Vitamin (Hestevard)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
VMZ-25 Multi Vitamin by Hestevard is a vitamin and mineral supplement intended for horses and ponies requiring a low sugar diet.
WaterWerks (HorseTech)
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
YeastYeast
WaterWerks from HorseTech is a supplement that is meant to provide digestive support and is meant for horses with free fecal water syndrome or leaky gut syndrome. It contains live yeast and bacteria for gut health.
Weanling (Dunstan)
Complete FeedComplete Feed
GrainsGrains
GrowthGrowth
JointsJoints
Weanling by Dunstan is a cereal grain based complete feed formulated to provide key nutrients for sound growth and development.
Weight-Up (AniMed)
DigestionDigestion
FatFat
Weight IssuesWeight Issues
YeastYeast
Weight-Up from AniMed is a supplement meant to help horses gain weight, and maintain an optimal weight. It contains calories and fat while also supporting a healthy digestive system. It also has yeast included.
Wellness Calm and Cool® (Seminole)
Complete FeedComplete Feed
FiberFiber
HerbHerb
Low NSC FeedsLow NSC Feeds
Wellness Calm and Cool® is a textured feed designed for easy keepers and ponies. It provides high levels of digestible fibre, and contains 3% fat and 21% NSC.
Wellness Compete Safe (Seminole) – [Discontinued]
Complete FeedComplete Feed
Competition HorsesCompetition Horses
ExerciseExercise
Low NSC FeedsLow NSC Feeds
Seminole Wellness Compete Safe is a now-discontinued textured horse feed targeted to active horses. It was advertised as a low-starch, high-fat feed with added herbs and stabilized rice bran.
Wellness DynaSport (Seminole)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
EnergyEnergy
FatFat
Wellness DynaSport™ is a textured feed with 14% fat to meet the high energy needs of equine athletes. It contains 15% NSC (sugar and starch). This feeds supports the performance and recovery of performance horses.
Wellness Equi-Safe (Seminole)
Complete FeedComplete Feed
FiberFiber
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Wellness Equi-Safe® is a low-calorie complete feed for adult horses and ponies with metabolic concerns. This molasses-free feed is composed of long-stemmed fiber from low-starch grasses.
Wellness Grow Right (Seminole)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
LactationLactation
Wellness Grow Right® is a textured feed targeted to horses of all life stages. It is composed of digestible fiber sources such as soyhulls and beet pulp. It contains added vitamins, organic and inorganic trace minerals, and probiotics.
Wellness Herbal Blend (Seminole)
Complete FeedComplete Feed
HerbHerb
Mineral BalanceMineral Balance
VitaminsVitamins
Wellness Herbal Blend is a textured feed providing 8% fat, 12% protein and 19% NSC. It contains nine added herbs, including garlic, spearmint, parsley, red clover, rosemary, and fenugreek.
Wellness Safe & Lite (Seminole)
Complete FeedComplete Feed
Easy KeeperEasy Keeper
FiberFiber
Low NSC FeedsLow NSC Feeds
Wellness Safe & Lite® is a pelleted feed for adult horses and easy keepers. This low-fat feed contains 15% NSC (12% starch, 3% sugars).
Wellness Senior Mix (Seminole)
Complete FeedComplete Feed
HerbHerb
SeniorSenior
Weight IssuesWeight Issues
Wellness Senior Mix® is a textured, easy-to-chew complete feed. It provides 18% NSC and 10% fat to support body condition maintenance.
Wellness Show & Sport (Seminole)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
PerformancePerformance
StaminaStamina
Wellness Show & Sport® is a high-fat multi-textured feed formulated to meet the higher energy and calorie requirements of performance, endurance, and show horses.
Wellness SportHorse (Seminole)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
FatFat
FiberFiber
Wellness SportHorse is a textured feed intended for performance horses at any life stage. It provides higher calorie density with 10% fat, 14% protein, 16% fiber, and 19% NSC.
WellSolve L/S Concentrate (Purina)
Complete FeedComplete Feed
FiberFiber
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Purina WellSolve L/S® Concentrate Horse Feed is a pelleted feed targeted to horses that require a low starch and sugar diet. It provides a maximum of 11% NSC from starch (7%) and sugar (4%).
WellSolve W/C Weight Control (Purina)
AntioxidantAntioxidant
Easy KeeperEasy Keeper
NutritionNutrition
Weight IssuesWeight Issues
Purina WellSolve WC® is an extruded concentrate horse feed with a lower calorie density. It is designed to add fibre and nutrients to the diet with low fat content to support weight control.
WellSolve Well-Gel (Purina Mills)
HealthHealth
Mineral BalanceMineral Balance
ProteinProtein
VitaminsVitamins
WellSolve Well-Gel from Purina Mills is a concentrated source of protein, vitamins and minerals for horses. WellSolve Well-Gel is intended to support overall equine health.
Whoa (Doctor’s Choice Supplements)
CalmingCalming
Mineral BalanceMineral Balance
StressStress
VitaminsVitamins
Whoa by Doctor's Choice Supplements is a supplement intended for horses with limited exercise programs or on box rest. It is designed to help with a horse's focus and attitude.
Wholesome Blends Balancer (Tribute)
Gut HealthGut Health
HealthHealth
Low NSC FeedsLow NSC Feeds
Ration BalancerRation Balancer
Wholesome Blends Balancer is a soy-free ration balancer with 28% protein, 5% fat and less than 15% NSC. It is formulated with canola, flax, alfalfa, and sunflower meals as well as split peas for protein.
Wholesome Blends Performance (Tribute)
Complete FeedComplete Feed
EnergyEnergy
FatFat
PerformancePerformance
Wholesome Blend Performance is a performance horse feed with higher levels of fat and protein. It is a textured feed using a variety of energy, fat and protein sources, both alternative and conventional.
Wholesome Blends Senior (Tribute)
Complete FeedComplete Feed
DigestionDigestion
FiberFiber
SeniorSenior
Wholesome Blends Senior is a soy-free high-fat and high-fiber textured complete feed for senior horses. It contains beet pulp, alfalfa meal, flaxseed meal, split peas, and canola oil.
Wilson’s Cool Formula (Wilson Feeds)
Mineral BalanceMineral Balance
NutrientsNutrients
ProteinProtein
YeastYeast
Wilson's Cool Formula by Wilson Feeds is a granular, textured horse feed formulated to balance forage-based diets. It is soy-free and contains peas and alfalfa as protein sources.
Winning Touch E-Z Hoof (Blue Seal) – [Discontinued]
BroodmareBroodmare
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Winning Touch E-Z Hoof is a pelleted hoof supplement providing 20 mg/LB of biotin as well as Vitamin E, selenium, chelated manganese, zinc, and copper.
Woody’s Complete Pellet Feed (Woody’s Horse Nutrition)
Complete FeedComplete Feed
FatFat
FiberFiber
Grain FreeGrain Free
Woody’s Complete is a pelleted feed intended for the majority of adult horses. It is composed of beet pulp, soybeans, alfalfa meal and rice bran and contains added probiotics and chelated trace minerals.
X-Lam Aid (GWF Nutrition)
DigestionDigestion
NutrientsNutrients
ProteinProtein
RecoveryRecovery
X-Lam Aid by GWF Nutrition is a pelleted horse supplement that is designed to maintain normal, healthy blood flow to the extremities of the hooves. It is is suitable for equines with laminitis or issues digesting sugar.
Xcelerace (Seminole)
ExerciseExercise
FatFat
FiberFiber
PerformancePerformance
Seminole Xcelerace is a textured feed for performance horses providing 8% fat and 26% NSC. Energy sources include oats, beet pulp, cracked corn, soybeans and cane molasses.
XLR8 (Mitavite)
EnergyEnergy
ExerciseExercise
Gut HealthGut Health
PerformancePerformance
XLR8 by Mitavite is an oat-free micronized feed intended for horses in training, racing and competition.
Yearling Mix (Dunstan)
Bone HealthBone Health
Complete FeedComplete Feed
GrowthGrowth
NutrientsNutrients
Yearling Mix by Dunstan is a complete feed intended to meet the nutrient requirements of the growing yearling.
Yearling Prep (Mitavite)
Bone HealthBone Health
GrowthGrowth
Hoof HealthHoof Health
Skin + HairSkin + Hair
Yearling Prep by Mitavite is an oat-free muesli intended to support the development of growing horses.
ZenA-Min Vitamin Mineral Supplement
Hoof HealthHoof Health
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
ZenA-min is an equine vitamin and mineral supplement formulated with trace minerals, kelp, vitamins, enzymes, and anti-oxidants. This feed is recommended for seniors and adult horses under stress or a heavy workload.
Zone (Banks Mill Feeds)
Mineral BalanceMineral Balance
ProteinProtein
Ration BalancerRation Balancer
VitaminsVitamins
Zone by Banks Mill Feeds is a pelleted ration balancer that is intended to be used to add protein, vitamins, and minerals to the equine diet. It is meant for growing, breeding, and performance horses as well as easy keepers.

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