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L-Lysine - Feed Ingredient

L-Lysine is an essential amino acid that plays a vital role in protein synthesis, tissue repair, and growth in horses. It is one of the key building blocks of proteins and is necessary for the production of enzymes, hormones, and antibodies. Since horses cannot synthesize L-Lysine on their own, it must be obtained through their diet.

In equine nutrition, L-Lysine is often included in feed formulations and supplements to ensure adequate levels of this essential amino acid. It is particularly important for growing horses, lactating mares, and performance horses, as it supports muscle development, immune function, and overall health. Adequate L-Lysine intake is crucial for optimizing the nutritional balance of equine diets and ensuring proper growth and maintenance.

The following equine feeds, supplements and products contain L-Lysine 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.
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.
Pure Stud (Pure Feed Company)
Caloric EnergyCaloric Energy
GrowthGrowth
NutrientsNutrients
StallionStallion
Pure Stud by Pure Feed Company is a textured feed which supports bone development and is low in starch. Pure Stud provides growing horses with the essential nutrients they require for proper growth.
Pure Veteran Mix (Pure Feed Company)
Caloric EnergyCaloric Energy
Mineral BalanceMineral Balance
SeniorSenior
VitaminsVitamins
Pure Veteran Mix by Pure Feed Company is a textured feed formulated with high levels of vitamins and minerals for older horses. It is free from molasses and maintains topline and muscle tone through easily digested protein.
Pure Veteran Pellets (Pure Feed Company)
Caloric EnergyCaloric Energy
DentalDental
Mineral BalanceMineral Balance
SeniorSenior
Pure Veteran Pellets by Pure Feed Company is a pelleted feed designed to help older horses with very poor dentition. It is formulated with high levels of vitamins and minerals and is free from molasses.
Pure Working (Pure Feed Company)
Competition HorsesCompetition Horses
FatFat
NutritionNutrition
Weight IssuesWeight Issues
Pure Working by Pure Feed Company is a textured horse feed that provides extra stamina without spooking. It has a high amino acid content for topline muscle development and is an All-in-one feed with vitamins and minerals.
Purina Ultium Senior Horse Feed (Purina)
FatFat
FiberFiber
Low NSC FeedsLow NSC Feeds
SeniorSenior
Purina Ultium Senior Horse Feed is a high-fibre, high-fat, low-starch, low-sugar pelleted extruded feed specially formulated for senior horses.
QuadraCare (The Mill)
DigestionDigestion
HealthHealth
Hoof HealthHoof Health
JointsJoints
QuadraCare from The Mill is a pelleted hoof, digestion, and joint supplement. QuadraCare is intended to support joint health, digestive function, and hoof quality in horses.
RACE ‘N WIN Textured Feed (BUCKEYE Nutrition)
Complete FeedComplete Feed
EnergyEnergy
Gut HealthGut Health
PerformancePerformance
RACE 'N WIN is a textured feed designed for performance horses who require high-energy feed. It also contains added amino acids, beet pulp, probiotics, and prebiotic ingredients.
Race First (Excel Equine Feeds)
Competition HorsesCompetition Horses
HealthHealth
NutritionNutrition
PerformancePerformance
Race First is a textured feed from Excel Equine Feeds. Race First is intended for horses in heavy work, and contains ingredients intended to support digestive health.
Race Horse Feed (Lifeline)
Competition HorsesCompetition Horses
EnergyEnergy
FiberFiber
NutritionNutrition
Race Horse Feed by Lifeline is a feed formulated for performance horses with high energy demands. This feed contains 14% protein, 7% fat, and 12% fiber.
Race Lite Muesli (Dodson & Horrell)
Amino AcidAmino Acid
ExerciseExercise
Mineral BalanceMineral Balance
PerformancePerformance
Race Lite Muesli is a textured lower protein racing feed made for horses beginning training or on a lighter training schedule. This feed contains a protein content of 12%, a fibre level of 9%, and moderate fat content of 4.5%.
Race Mix (Dunstan)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
ExerciseExercise
PerformancePerformance
Race Mix by Dunstan is a complete, balanced feed providing working horses with protein, energy, vitamins and minerals for performance and health.
Race Ready GT (Purina)
Competition HorsesCompetition Horses
DigestionDigestion
EnergyEnergy
PerformancePerformance
Purina® Race Ready® GT is a textured feed intended for equine athletes and race horses. It is designed to provide a higher energy density and gut support ingredients to meet the needs of performance horses.
Race Ready® Horse Feed (Purina Mills)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
Gut HealthGut Health
PerformancePerformance
Race Ready is a high-energy textured feed targeted to meet the calorie requirements of racehorses. It provides 12% crude protein, 8% crude fat, 9% fibre, and contains molasses and vegetable oil.
Race Time (Capstone Horse Feed)
AntioxidantAntioxidant
HealthHealth
NutritionNutrition
SeniorSenior
Race Time by Capstone Horse Feed is a muesli style feed intended for mature horses.
Racehorse Cubes (Dodson & Horrell)
Competition HorsesCompetition Horses
FatFat
GrainsGrains
NutritionNutrition
Racehorse Cubes is a feed designed for racehorses in full training. This feed is high in NSC to give the horses an energy boost. It is also high in protein for proper muscle building and includes some ricebran to support a good body condition.
Racing Balancer (Dodson & Horrell)
GrainsGrains
PerformancePerformance
ProteinProtein
Ration BalancerRation Balancer
Racing Balancer is a feed intended to balance a racehorse's diet and meant to be fed alongside oats. This feed adds additional protein required for muscle building, recovery, and the vitamins and minerals needed for proper nutrient absorption.
Racing Cube (Pryde’s EasiFeed)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
EnergyEnergy
PerformancePerformance
Racing Cube by Pryde's EasiFeed is a complete feed in extruded cube form. It is intended for race, performance and sport horses.
Racing Feed Balancer (TopSpec)
Competition HorsesCompetition Horses
NutritionNutrition
PerformancePerformance
Ration BalancerRation Balancer
Racing Feed Balancer from TopSpec is ideal for Racehorses at rest or in work and trotters. This ration balancer supports digestive efficiency, recovery, muscle development, hoof quality, and coat condition.
Radiate (Excel Equine Feeds)
HealthHealth
NutrientsNutrients
NutritionNutrition
Weight IssuesWeight Issues
Radiate from Excel Equine Feeds is a pelleted feed. This feed is intended for hard keepers. Radiate contains 12% protein and 10% fat.
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 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-Inforcer EQ (MVP)
AntioxidantAntioxidant
ExerciseExercise
JointsJoints
RecoveryRecovery
Re-Inforcer EQ by MVP is a pelleted supplement that intends to support joints, cartilage and connective tissue. It contains zinc, manganese and copper that intends to provide antioxidant support.
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.
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.
Regen-X (100 X Equine)
Amino AcidAmino Acid
Competition HorsesCompetition Horses
PerformancePerformance
RecoveryRecovery
Regen-X from 100 X Equine is an amino acid supplement intended for performance horses. Regen-X is intended to build muscle tone and support recovery after exercise.
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.
ReitHoof Advanced Hoof Support (HorseTech)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
ReitHoof Advanced Hoof Support from HorseTech is a pelleted hoof supplement that has an alfalfa meal base. It contains minerals, vitamins, and amino acids.
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.
Remission Hoof Supplement (AniMed)
Hoof HealthHoof Health
ProbioticProbiotic
Toxin BinderToxin Binder
YeastYeast
Remission Hoof Supplement is an equine supplement composed of amino acids, vitamins and minerals to support hoof health. It provides 20 mg of biotin per serving.
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.
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.
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.
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.
Safe ‘N Easy Complete (Buckeye)
Complete FeedComplete Feed
DentalDental
GrainsGrains
NutritionNutrition
Buckeye SAFE 'N EASY™ Complete Pelleted Feed is a feed intended for horses or ponies with dental issues or horses with limited forage in their diet. It is meant to provide an easy-to-chew fiber blend with no corn or molasses.
SAFE ‘N EASY Pelleted Feed (BUCKEYE Nutrition)
Complete FeedComplete Feed
Easy KeeperEasy Keeper
FiberFiber
HindgutHindgut
Buckeye Safe 'N Easy™ Pelleted Feed is a 12.5% NSC horse feed intended for starch-sensitive horses and ponies or those that require a lower calorie diet. It is formulated with no corn or molasses.
SAFE ‘N EASY Performance (BUCKEYE Nutrition)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
Mineral BalanceMineral Balance
PerformancePerformance
Buckeye SAFE 'N EASY™ Performance is a pelleted horse feed that provides high energy density from fat and fibre. It has a 13.5% NSC and is corn- and molasses-free.
SAFE ‘N EASY Textured Feed (Buckeye)
Complete FeedComplete Feed
DentalDental
Gut HealthGut Health
NutrientsNutrients
Buckeye SAFE 'N EASY Textured Feed is a 16.5% NSC feed made without corn or molasses. This feed provides moderate energy density and is intended for horses requiring a low calorie diet.
Safe Performance Controlled Starch Formula (Manna Pro)
Complete FeedComplete Feed
FatFat
NutritionNutrition
PerformancePerformance
Safe Performance Controlled Starch Formula from Manna Pro is a complete feed designed for horses at all life stages. It contains 14% crude protein and 17% NSC. Safe Performance Controlled Starch Formula contains Max-E Glo® Stabilized Rice Bran as a source of fat and energy.
Safe Performance Elite High Fat (Manna Pro)
Complete FeedComplete Feed
FatFat
NutritionNutrition
PerformancePerformance
Safe Performance Elite High Fat from Manna Pro is a beet pulp-based complete feed designed for horses at all life stages. It contains 12% crude protein and 18% NSCs. Safe Performance Elite High Fat contains Max-E Glo® Stabilized Rice Bran as a source of fat and energy. This feed contains no added corn or molasses.
Safe Performance Senior (Manna Pro)
Complete FeedComplete Feed
FiberFiber
NutritionNutrition
SeniorSenior
Safe Performance Senior from Manna Pro is a pelleted feed designed for senior horses in work. It is formulated with Max-E Glo® stabilized rice bran and beet pulp. It is a corn- and molasses-free formulation that contains 14% crude protein, 7% crude fat, and 19% NSC.
Safe Performance Special Diet (Manna Pro)
Complete FeedComplete Feed
FiberFiber
HealthHealth
Metabolic SyndromeMetabolic Syndrome
Safe Performance Special Diet from Manna Pro is a pelleted feed for adult horses. It uses Max-E Glo® stabilized rice bran as a source of fat and fiber. It contains 14% crude protein, 3% crude fat, and 17% NSC. This product uses a mix of organic and inorganic trace minerals.
Safe Starch Forage (Triple Crown)
ForageForage
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Ration BalancerRation Balancer
Triple Crown Safe Starch® Forage is a forage-based feed containing a mixture of orchard and timothy hays fortified with vitamins, minerals and direct-fed microbials.
SafeChoice All Life Stages (Nutrena)
Gut HealthGut Health
ImmunityImmunity
Organic Trace MineralsOrganic Trace Minerals
ToplineTopline
SafeChoice All Life Stages is a pelleted feed that is meant to support skin and coat health, hoof health, and topline support. It is also supposed to assist with gut health and immunity, and contains organic trace minerals.

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