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Ingredient

DL-Methionine

Methionine is a sulfur-containing essential amino acid that plays a crucial role in protein synthesis, metabolism, and various physiological functions in horses. As an essential amino acid, it must be obtained from the diet since horses cannot synthesize it internally. Methionine is commonly included in equine feed formulations and supplements to support muscle development, hoof health, and overall protein utilization.

In equine nutrition, methionine serves as a precursor for other sulfur-containing compounds, such as cysteine and taurine, which are important for tissue repair, antioxidant function, and keratin formation. It is particularly relevant in hoof health due to its role in keratin synthesis, the primary structural protein in hooves and hair. While methionine is naturally present in forages and protein-rich feeds, supplementation may be necessary in diets that are low in high-quality protein sources.

The following equine feeds, supplements and products contain DL-Methionine as an ingredient.

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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.
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.
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.
Kalm Performer (Tribute Equine)
EnergyEnergy
PerformancePerformance
ProteinProtein
Weight IssuesWeight Issues
Kalm Performer® is a corn-free, high-fat, textured feed with 24% NSC targeted to mature performance horses. It is formulated for horses consuming higher protein forages such as alfalfa hay.
Kalm Performer GC Plus (Tribute)
Complete FeedComplete Feed
JointsJoints
PerformancePerformance
RespiratoryRespiratory
Tribute Kalm Performer is a pelleted complete feed intended for mature horses on high protein forages like alfalfa hay. It is a corn-free formula with steam-crimped grains to support digestibility. It provides 24% NSC.
Kalm Ultra (Tribute Equine)
Complete FeedComplete Feed
ExerciseExercise
StressStress
Weight IssuesWeight Issues
Tribute Kalm Ultra® is a high-fat pelleted feed with 23.5% NSC targeted to adult horses in heavy work or hard keepers that need to gain weight. Kalm Ultra® provides energy from fat and fiber to support calm performance.
Ker-A-Form (Kentucky Performance Products)
Coat QualityCoat Quality
Hoof HealthHoof Health
Mineral BalanceMineral Balance
Skin + HairSkin + Hair
Ker-A-Form from Kentucky Performance Products is a hoof and coat supplement. It is meant to help with the health of coats, manes and tails, and also contribute to the strength of hooves.
Koolspeed (MAC)
Gut HealthGut Health
NutritionNutrition
PerformancePerformance
UlcersUlcers
KoolSpeed Equine Performance Feed is a feed targeted to performance equine athletes to reduce the incidence of ulcers. It is formulated with digestible forage and fiber sources and is intended to slow down the rate of consumption.
KoolSpeed Collection Performance Ration (MAC)
EnergyEnergy
Gut HealthGut Health
HealthHealth
PerformancePerformance
KoolSpeed Collection Performance Ration by MAC is a feed for performance horses. It contains forage and grain-based ingredients.
KoolSpeed Low Starch (MAC)
CalmingCalming
EnergyEnergy
NutrientsNutrients
NutritionNutrition
KoolSpeed Low Starch by MAC is a low starch feed intended to promote calmness in horses without losing energy.
KoolSpeed Mare & Foal (MAC)
Bone HealthBone Health
BroodmareBroodmare
FoalFoal
GrowthGrowth
KoolSpeed Mare & Foal by MAC is a feed intended to support foal growth and development.
KoolSpeed Plus (MAC)
Competition HorsesCompetition Horses
EnergyEnergy
NutritionNutrition
PerformancePerformance
KoolSpeed Plus by MAC is a feed intended to minimize incidences and/or severity of gastric ulcers. It is intended to be used in horses undergoing heavy exercise.
Laktese Ex Oral Syringe (Hestevard)
AntioxidantAntioxidant
ElectrolyteElectrolyte
MuscleMuscle
RecoveryRecovery
Laktese Ex Oral Syringe by Hestevard is a paste supplement intended to support muscle function and energy metabolism in all types of horses and ponies.
Lamina Formula (Life Data)
FiberFiber
Hoof HealthHoof Health
Mineral BalanceMineral Balance
NutrientsNutrients
Lamina Formula by Life Labs is intended to support the laminae of horses with acute or chronic laminitis. It provides protein, vitamins and minerals to support hoof health.
LaminaSaver (Figuerola Labs)
AntioxidantAntioxidant
Bone HealthBone Health
HealthHealth
RecoveryRecovery
LaminaSaver by Figuerola Labs is a powdered supplement designed to support bone health. It is formulated with biotin, antioxidants, and methionine.
Laminex (MVP)
AntioxidantAntioxidant
CirculationCirculation
JointsJoints
Metabolic SyndromeMetabolic Syndrome
Laminex by MVP is a pelleted supplement meant to help support healthy joint function, blood sugar levels, and hoof growth. It contains MSM, magnesium, biotin, and devil's claw.
Lamivite (Equestrizone)
AntioxidantAntioxidant
Gut HealthGut Health
HindgutHindgut
NutrientsNutrients
Lamivite from Equestrizone is a blend of naturally sourced antioxidants and micronutrients to support a high fibre, low concentrate diet. It supports healthy stomach and hindgut functions in horses.
Leading Edge – Textured (Brooks)
AntioxidantAntioxidant
Competition HorsesCompetition Horses
PerformancePerformance
PrebioticPrebiotic
Leading Edge - Textured by Brooks is a feed and is intended for horses in competition or training.
Leading Edge (Manna Pro)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
ProteinProtein
Leading Edge by Manna Pro is an equine feed intended for all classes of horses. It contains 14% crude protein and 6% crude fat from sources such as wheat middlings, corn, soy hulls, and vegetable oil.
Legacy 16% Mare & Foal Ration (CO-OP)
FoalFoal
GrowthGrowth
LactationLactation
MareMare
Legacy 16% Mare & Foal Ration is a higher-protein feed intended for broodmares and growing foals. These horses benefit from higher levels of amino acids in the diet.
Lite (Triple Crown)
FiberFiber
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Weight IssuesWeight Issues
Triple Crown Lite is a palatable, low-calorie, high-fiber pellet fortified with vitamins and minerals. This feed is intended for horses or ponies prone to laminitis and insulin resistance and tends to gain weight easily. This feed has an NSC of 9.5%.
Lite Ration Balancer (Lifeline)
BroodmareBroodmare
GrowthGrowth
LactationLactation
NutrientsNutrients
Lite Ration Balancer by Lifeline is a pelleted supplemented intended for growing horses and pregnant/lactating broodmares.
LMF California Complete (LMF Horse Feeds)
Complete FeedComplete Feed
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
LMF California Complete is a pelleted feed formulated as an alternative to diets containing pure alfalfa hay. It contains highly digestible fibre from beet pulp, alfalfa hay and soyhulls.
LMF Development – Northwest Formula G (LMF Horse Feeds)
BroodmareBroodmare
GrowthGrowth
NutritionNutrition
PerformancePerformance
LMF Development by LMF Horse Feeds is a textured, grain-based feed intended for horses in the western U.S. Formula G is designed to complement grass-based forages.
LMF Development – Southwest Formula G (LMF Horse Feeds)
BroodmareBroodmare
GrowthGrowth
NutritionNutrition
PerformancePerformance
LMF Development by LMF Horse Feeds is a textured, grain-based feed intended for horses in the western U.S. Formula G is designed to complement grass-based forages.
LMF Gold (LMF Horse Feed)
EnergyEnergy
ExerciseExercise
Gut HealthGut Health
NutritionNutrition
LMF Gold is a high calorie textured feed intended to support performance and weight gain in horses. Additionally it provides vitamins, minerals and fibre sources.
LMF Pro-Pellet (LMF Horse Feeds)
Complete FeedComplete Feed
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
LMF Pro-Pellet is a textured high-fiber feed for performance horses in moderate to heavy work. It contains 12% crude protein, and 3.3% fat, along with bio-available trace minerals, organic selenium, live yeast culture, and glucosamine.
LMF Senior (LMF Horse Feeds)
Complete FeedComplete Feed
FiberFiber
JointsJoints
SeniorSenior
LMF Senior is a pelleted complete feed for aged horses. It contains ingredients to support joint and gut health.
LMF Senior Low Carb (LMF Horse Feeds)
Complete FeedComplete Feed
Grain FreeGrain Free
JointsJoints
SeniorSenior
LMF Senior Low Carb feed is a soybean- and alfalfa-based feed for mature horses. It contains 13% crude protein, 8% fat, and 8% NSC.
LMF Showtime (LMF Horse Feeds)
CalmingCalming
Competition HorsesCompetition Horses
NutritionNutrition
Skin + HairSkin + Hair
LMF Showtime by LMF Horse Feeds is a textured feed intended to support body and coat condition in show horses and ponies.
LMF Super Supplement NW A (LMF Horse Feeds)
Easy KeeperEasy Keeper
HealthHealth
NutritionNutrition
Ration BalancerRation Balancer
LMF Super Supplement is a ration balancer from LMF Horse Feeds. This feed is intended for easy keepers, and contains vitamins and minerals to balance a forage based diet.
LMF Taco (LMF Horse Feeds)
Complete FeedComplete Feed
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
LMF Taco is a complete feed intended for horses of all classes. It contains 12% crude protein and 2.5% fat from timothy and alfalfa hay, corn and oats. This feed is made with cane molasses to encourage palatability.
Lone Star Trace MS-051120 (HorseTech)
Mineral BalanceMineral Balance
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Lone Star Trace MS-051120 is a custom vitamin and mineral supplement for horses. It contains milled flaxseed, added amino acids and organic trace minerals.
Low Non-Structural Carbohydrate Feed NW (LMF Horse Feeds)
Complete FeedComplete Feed
FiberFiber
Low NSC FeedsLow NSC Feeds
NutritionNutrition
Low NSC Feed by LMF Horse Feeds contains 8% NSC (starch and sugar). It is a pelleted feed that can be fed as the total diet.
Low Non-Structural Carbohydrate Feed SW (LMF Horse Feeds)
Complete FeedComplete Feed
FiberFiber
Low NSC FeedsLow NSC Feeds
NutritionNutrition
Low NSC Feed by LMF Horse Feeds contains 8% NSC (starch and sugar). It is a pelleted feed that can be fed as the total diet.
Low Starch (Triple Crown)
Complete FeedComplete Feed
Grain FreeGrain Free
Metabolic SyndromeMetabolic Syndrome
SeniorSenior
Triple Crown Low Starch is a pelleted feed containing a lower level of 13.5% NSC. It has no whole grains, molasses or alfalfa meal which can cause excitability in horses.
Low Starch Omega Plus (Equine Advantage)
Caloric EnergyCaloric Energy
FatFat
FiberFiber
NutritionNutrition
Low Starch Omega Plus is intended for horses that need moderate to significant calories added to their diet. This diet is suitable for horses with Insulin Resistance, Cushing's Disease, and PSSM due to the low NCS.
Magic Mineral (Farrier’s Magic)
Coat QualityCoat Quality
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Magic Mineral is a supplement intended for equines of all ages. The supplement helps support healthy hooves and coats.
Mare & Foal (Running Horse Elite Equine Nutrition)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Running Horse Elite Mare & Foal is a high-fat feed that contains 16% protein and 9% fat from sources such as wheat middlings, rice bran, and soybean oil. This feed is targeted at pregnant, lactating, and growing horses.
Mare & Foal (Seminole)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Seminole Mare & Foal™ is a textured feed designed for foals, weanlings, and late-gestation or lactating broodmares. This oat-based feed contains corn, digestible fibre, added lysine, and chelated trace minerals.
Mare Cube (Excel Equine Feeds)
BroodmareBroodmare
GrowthGrowth
NutrientsNutrients
NutritionNutrition
Mare Cube by Excel Equine Feeds is a cubed feed fortified with protein, amino acids, vitamins and minerals. It is intended for broodmares and growing horses.
Mare Support (Pureform)
CalmingCalming
MareMare
Mineral BalanceMineral Balance
VitaminsVitamins
Mare Support is a vitamin/mineral supplement formulated for horses on a grass-based diet. It contains glucosamine and MSM for joint health, B-vitamins, organic microminerals and vitex agnus-castus (chasteberry).
Mare-Foal II-P (Pellets) (MVP)
BroodmareBroodmare
FoalFoal
Mineral BalanceMineral Balance
VitaminsVitamins
Mare-Foal II-P by MVP is a pelleted supplement designed for broodmares and foals. It contains vitamins, minerals, probiotics and an elevated protein level that intend to support proper development.
Mare’s Milk Replacer (Baileys Horse Feeds)
FoalFoal
GrowthGrowth
NutritionNutrition
ProteinProtein
Mare's Milk Replacer from Baileys Horse Feeds is intended for orphaned or rejected foals after receiving colostrum. This feed contains milk protein, vitamins, and minerals vital for the foal's optimum growth.
Mare’s Match® Foal Transition Pellets (Land O Lakes)
FatFat
FoalFoal
GrowthGrowth
ProteinProtein
Mare's Match® Foal Transition Pellets is a milk-based feed targeted to weanlings transitioning to solid feed. It is a source of protein, fat, vitamins and minerals.
MareKare (AniMed)
BroodmareBroodmare
LactationLactation
NutrientsNutrients
VitaminsVitamins
MareKare from AniMed is a made for pregnant and lactating mares. This vitamin and mineral supplement is meant to provide extra nutrients and help maintain body condition during breeding, foaling, and lactating.
Master’s Hoof Blend (Vita Flex)
Amino AcidAmino Acid
Hoof HealthHoof Health
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Master's Hoof Blend from Vita Flex is a hoof supplement containing the essential amino acids lysine and methionine, and biotin. It also contains sulfur and chelated trace minerals to support hoof growth and integrity.
Materna (Sollio Agriculture)
GrowthGrowth
HealthHealth
MareMare
NutritionNutrition
Materna is a pelleted feed intended for broodmares during lactation and gestation. This feed is intended to promote the development of the fetus. Materna contains 16% crude protein.
Mega Dose (Horse Guard)
DigestionDigestion
Gut HealthGut Health
Mineral BalanceMineral Balance
VitaminsVitamins
Mega Dose by Horse Guard is a supplement that contains vitamins, minerals, and probiotics. It is intended to assist with digestion, gut health and hoof health.
Mega-Blud (Equistro)-[Discontinued]
HealthHealth
IngredientIngredient
PerformancePerformance
VitaminsVitamins
Mega-Blud from Equistro was a powdered booster dose of Vitamin A, E, and D. Mega-Blud was intended to support the function of the musculoskeletal, immune, and nervous systems.
Mega-Cell MVP – Pelleted Multi Vitamin and Mineral (Med-Vet)
HealthHealth
ProbioticProbiotic
Ration BalancerRation Balancer
VitaminsVitamins
MVP Mega-Cell is a pelleted vitamin and mineral supplement for horses formulated to balance grass hays and grain-based diets. It is also a source of amino acids and microbials.
Mega-Mag (Pellets) (MVP)
Amino AcidAmino Acid
Mineral BalanceMineral Balance
ProbioticProbiotic
VitaminsVitamins
Mega-Mag by MVP is a pelleted supplement designed for alfalfa hay/grain diets that provide vitamins, minerals, amino acids, and probiotics intended horses of all life stages.
Mellow Muscle (Sierra Gold)
CalmingCalming
Mineral BalanceMineral Balance
MuscleMuscle
VitaminsVitamins
Mellow Muscle by Sierra Gold is a powdered supplement for horses intended to aid horses suffering from PSSM. It contains vitamins, minerals, and amino acids which intend to support muscle growth.

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