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DL-Methionine - Feed Ingredient

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.

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.
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.
Omolene Maternity 300 (Purina Canada)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Purina Omolene Maternity 300 is a textured horse feed intended for broodmares, nursing and growing foals. It provides higher amino acid content to support growth and development.
Omolene Progression 200 (Purina)
BroodmareBroodmare
Complete FeedComplete Feed
PerformancePerformance
StallionStallion
Omolene Progression 200 is a textured feed intended for performance horses, growing horses and gestating mares. It supplies 14% protein and 7% fat from ingredient sources including soybean meal, soybean oil, whole oats, flaked barley and extruded corn.
Omolene Senior Action (Purina)
ExerciseExercise
PerformancePerformance
Ration BalancerRation Balancer
SeniorSenior
Omolene Senior Action is a complete textured feed formulated for active senior horses. It provides 14% protein, which may support muscle tone in senior horses that are not receiving enough protein from their forage.
Omolene Sport Plus (Purina)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
ExerciseExercise
PerformancePerformance
Purina Omolene Sport Plus is a textured complete feed intended for horses in heavy work including racehorses. It provides 8% fat from vegetable oils and contains beet pulp as a high pectin fibre source.
Omolene® #200 Performance Horse Feed (Purina Mills)
Complete FeedComplete Feed
ExerciseExercise
Gut HealthGut Health
PerformancePerformance
Omolene 200 Performance Horse Feed is a textured feed targeted to performance horses, broodmares in gestation and lactation, and breeding stallions. It contains added fat, carbohydrates, and molasses to support high caloric needs.
Omolene® #400 Complete Advantage (Purina Mills)
Complete FeedComplete Feed
ExerciseExercise
FiberFiber
SeniorSenior
Omolene 400 Complete Advantage is a textured horse feed for active and senior horses. It contains highly digestible fibre from beet pulp and fat from vegetable oils, flax seed and rice bran.
Optimize (Uckele)
FiberFiber
Low NSC FeedsLow NSC Feeds
MetabolismMetabolism
NutrientsNutrients
Optimize is a pelleted ration balancer with a feeding rate of 1-2 lbs per day. It is formulated for horses needing a low starch and sugar diet, such as horses with metabolic disorders. The NSC content in this ration balancer is 7.8%
Outshine (Baileys Horse Feeds)
Coat QualityCoat Quality
FatFat
NutritionNutrition
Omega 3-6-9Omega 3-6-9
Outshine by Baileys Horse Feeds improves coat quality and supports horses who need slow-release calories for weight gain. This supplement contains Omega-3 and Omega-6 fatty acids.
Parkmore Special Vitamin/Mineral Pelleted Supplement (Parkmore Supplements)
HealthHealth
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Parkmore Special Vitamin/Mineral Pelleted Supplement is a trace mineral and vitamin supplement designed for all ages and working classes of horses. It can be fed in addition to grain or on its own.
Patriot Performance Horse Feed (ADM Animal Nutrition)
Complete FeedComplete Feed
EnergyEnergy
ExerciseExercise
PerformancePerformance
Patriot Performance is a pelleted complete feed that is formulated for mature performance horses and broodmares. It provides vegetable fat and digestible fibre sources and contains ~20% NSC.
Patriot Quick Performance (ADM Animal Nutrition)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
ExerciseExercise
PerformancePerformance
Patriot Quick Performance is a pelleted feed formulated for use when forage supply is limited. It contains 20 - 30% NSC and is intended for mature athletic horses that require additional energy.
Pelleted Hoof Supplement (American Farrier’s Association)
FlavorFlavor
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
This pelleted hoof supplement is meant to be palatable and functional for any horse or pony. It contains a variety of minerals and vitamins which aims to support strong, healthy hooves.
Perfo EXT (Sollio Agriculture)
Competition HorsesCompetition Horses
HealthHealth
NutritionNutrition
Weight IssuesWeight Issues
Perfo EXT is a high-calorie extruded feed. This feed is intended for performance horses or horses who require additional calories.
Perform Gold (Triple Crown)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
FatFat
FiberFiber
Perform Gold is a high energy density pelleted feed designed for performance horses. It provides 12.5% protein, 12% fat and 15.3% NSC, and contains a mixture of organic and inorganic minerals.
Perform Safe (Seminole)
Complete FeedComplete Feed
EnergyEnergy
Low NSC FeedsLow NSC Feeds
PerformancePerformance
Perform Safe™ is a low-starch, high-fat pelleted feed targeted to growing, breeding and mature performance horses. It contains 12% protein and 8% fat with energy sources such as soybean hulls, beet pulp and rice bran.
Performance (Equis Feed)
GrainsGrains
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Equis Feeds Performance is a high-protein complete feed intended for working horses. It is formulated with oil and grains with highly digestible vitamins, minerals, and digestive aids to provide higher energy density.
Performance Advantage (Tribute Equine)
EnergyEnergy
FatFat
FoalFoal
PerformancePerformance
Tribute Performance Advantage® is a grain-based, textured feed formulated to meet the higher energy requirements of performance horses. It provides 8% fat and 31% NSC.
Performance Horse Mineral (Hoffman’s Horse Products)
Mineral BalanceMineral Balance
PerformancePerformance
RecoveryRecovery
VitaminsVitamins
Hoffman's Performance Horse Mineral is a pelleted mineral and vitamin supplement that provides a mix of organic and inorganic trace minerals. This supplement can be provided free-choice or as a top dressing with feed.
Performance Liquid (Formula 707)
Mineral BalanceMineral Balance
NutrientsNutrients
PerformancePerformance
VitaminsVitamins
Performance Liquid from Formula 707 is a liquid supplement containing vitamins and minerals. It is intended to provide energy and nutrients for performance horses.
Performance One (Pureform)
Competition HorsesCompetition Horses
ElectrolyteElectrolyte
ExerciseExercise
PerformancePerformance
Performance One is a concentrated supplement for performance horses providing glucosamine, MSM, creatine, amino acids, vitamins, trace minerals and electrolytes.
Performance Pelleted (Woody’s Horse Nutrition)
Competition HorsesCompetition Horses
FatFat
PerformancePerformance
ProteinProtein
Woody’s Performance Pelleted is a complete pelleted feed with higher energy density for working horses. It is formulated with beet pulp, alfalfa meal and oats, and contains 14% protein and 8% fat.
Performance Pellets Gold Formula (Bartlett Milling) [Discontinued]
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
ExerciseExercise
PerformancePerformance
Bartlett Performance Pellets Gold Formula is a high energy density feed intended for mature horses in moderate to rigorous training. Calorie sources include wheat middlings, corn, and soy oil.
Performance Textured (ProElite)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
PerformancePerformance
StaminaStamina
ProElite Performance Horse Feed is a textured feed intended for mature show and performance horses. It provides 12% fat and 18.3% NSC with energy sources including beet pulp, whole oats, wheat middlings, soybean hulls, and cane molasses.
Performance Textured (Woody’s Horse Nutrition)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
FatFat
ProteinProtein
Woody’s Performance Textured is a complete textured feed for exercising and performance horses. It provides 14% protein and 10% fat and is composed of oats, beet pulp, molasses and vegetable oil.
Physique (Equi-lete)
Bone HealthBone Health
EnergyEnergy
HealthHealth
Mineral BalanceMineral Balance
UlcersUlcers
Physique by Equi-lete is a pelleted supplement intended to support bone and tissue health in all horse types.
Platinum Hoof Support (Platinum Performance)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Platinum Hoof Support is an equine hoof supplement providing biotin, the trace minerals zinc, manganese, copper, and cobalt, and the amino acids L-lysine and L-methionine.
Platinum Performance® Equine Wellness and Performance Formula
EnergyEnergy
FatFat
JointsJoints
Omega 3-6-9Omega 3-6-9
Platinum Performance® Equine Wellness and Performance Formula is a nutritional supplement containing ground flaxseed, stabilized rice bran, montmorillonite (bentonite) clay and a range of vitamins and minerals.
Power Finish (Tribute)
Complete FeedComplete Feed
EnergyEnergy
ExerciseExercise
PerformancePerformance
Tribute Power Finish is a high-fat textured feed intended for adult horses in heavy training. It provides highly digestible energy sources to support the calorie requirements of racehorses. Power Finish contains high levels of protein (13% crude protein), fat (10% crude fat), and NSC (32%).
PowerGLO (ADM Animal Nutrition)
Caloric EnergyCaloric Energy
ExerciseExercise
PerformancePerformance
Weight IssuesWeight Issues
PowerGLO is a concentrated feed formulated for elite performance horses. It is high in fat and carbohydrates to support the caloric needs of equine athletes.
Premium Horse Pellet AL (Cargill)
DigestionDigestion
ExerciseExercise
NutrientsNutrients
NutritionNutrition
Premium Horse Pellets (AL) by Cargill are intended as a ration balancer for adult horses.
PreOx (HorseTech)
AntioxidantAntioxidant
HealthHealth
ImmunityImmunity
VitaminsVitamins
PreOx from HorseTech is a powdered antioxidant supplement. PreOx contains added vitamins, minerals and added flaxseed. This supplement is intended for horses who require additional antioxidants in their diet.
Prep Mix (Baileys Horse Feeds)
FatFat
GrowthGrowth
NutritionNutrition
ToplineTopline
Baileys Horse Feeds Prep Mix is formulated to provide optimum growth support and condition. This feed is intended for yearlings to 3-year-olds in early training. Prep Mix is oat-free and contains 6.5% of oil, which helps to improve coat quality.
Prime (Running Horse)
Competition HorsesCompetition Horses
ExerciseExercise
FatFat
PerformancePerformance
Running Horse Prime is a high-energy extruded feed targeted to performance equine athletes. Calorie sources include wheat middlings, pearled barley, soybean hulls, corn DDGS, stabilized rice bran, vegetable oil, flaxseed, and beet pulp.
PrimeGLO (ADM Animal Nutrition)
FatFat
Omega 3-6-9Omega 3-6-9
PerformancePerformance
Weight IssuesWeight Issues
PrimeGLO is a concentrated horse feed designed for mature horses. It is a soft, easy-to-chew formulation that contains ingredients to support gut health. The total NSC is 14.5%.
Pro Horse 12 (MAC)
EnergyEnergy
FatFat
NutrientsNutrients
SeniorSenior
Pro Horse 12 by MAC is a high energy feed with vitamins and minerals, it is intended for mature horses.
Pro Mare (MAC)
BroodmareBroodmare
LactationLactation
Mineral BalanceMineral Balance
NutrientsNutrients
Pro Mare by MAC is a salt-limited supplement intended for lactating or dry mares on hay or pasture.
Pro Mare With Clarifly (MAC)
BroodmareBroodmare
HealthHealth
LactationLactation
NutrientsNutrients
Pro Mare with Clarifly by MAC is a protein, vitamin and mineral supplement. It is intended to control the development of flies in the manure of dry and lactating mares.
Pro-Plus 12 Sweet (Seminole) – [Discontinued]
Amino AcidAmino Acid
Complete FeedComplete Feed
ExerciseExercise
GrowthGrowth
Seminole Pro-Plus 12 Sweet is a now-discontinued oat-based textured feed for growing, breeding, pleasure and performance horses.
ProAdvantage – Alfalfa Formula (Progressive Nutrition)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ProAdvantage® – Alfalfa Formula is a ration balancer concentrate intended for horses consuming alfalfa hay. This feed contains amino acids, vitamins, and minerals in a lower-starch format.
ProAdvantage – Grass Formula (Progressive Nutrition)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ProAdvantage® – Grass Formula is a concentrated ration balancer intended for horses consuming grass or mixed hay. This feed contains amino acids, vitamins, and minerals in a lower-starch format.
ProAmino (Equine Challenge)
Amino AcidAmino Acid
BroodmareBroodmare
MuscleMuscle
RecoveryRecovery
ProAmino from Equine Challenge is a supplement containing amino acids and omegas 3 and 6. It is intended for growing, pregnant, or lactating horses and can assist with muscle health and recovery.
Profecta 10 (Seminole)
Caloric EnergyCaloric Energy
Feed EfficiencyFeed Efficiency
GrainsGrains
YeastYeast
Seminole Profecta 10™ is a pelleted feed providing grains, digestible fibers, yeast and molasses with 21% NSC. It is targeted at active mature horses and ponies.
Profecta 12 (Seminole)
FiberFiber
GrainsGrains
Mineral BalanceMineral Balance
YeastYeast
Seminole Profecta 12 is a pelleted feed intended for mature, active horses and ponies. It has a moderate energy density, yeast culture, and 19% NSC (sugar and starch).
Profecta 14 (Seminole)
FiberFiber
GrainsGrains
Mineral BalanceMineral Balance
YeastYeast
Seminole Profecta 14 is a pelleted feed intended for growing, breeding and performance horses. It contains 14% protein, 7% fat and 24% NSC. This feed is fortified with chelated trace minerals and antioxidants.
ProForce Fuel (Nutrena)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
FatFat
Nutrena ProForce Fuel is a 13% fat horse feed intended for performance athletes and hard keepers. It is meant to provide a higher calorie density with a maximum of 20% NSC.
ProForce Fuel XF (Nutrena)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
FatFat
Nutrena ProForce® Fuel XF is a 13% fat horse feed formulated for high performance horses that need additional nutritional support to meet the demands of stress and rigorous training.
ProForce Senior (Nutrena)
EnergyEnergy
ExerciseExercise
FiberFiber
SeniorSenior
Nutrena ProForce Senior is an 11% fat horse feed intended for senior equine athletes. It contains energy from digestible fiber sources and extruded fat nuggets with a maximum of 18% NSC.
Prove PRO:formance (Farrier’s Magic)
Caloric EnergyCaloric Energy
FiberFiber
GrainsGrains
NutritionNutrition
Prove PRO:formance is a complete grain ration intended to help provide horses, of all ages and levels of work, with all the needed nutrients that they might not have if only fed pasture or hay.
Pur-Athlete (Purina)
Complete FeedComplete Feed
ExerciseExercise
FatFat
PerformancePerformance
Pur-Athlete™ is an extruded fat supplement containing vegetable oil and flaxseed. It is formulated to provide added energy and nutrients for performance horses. This supplement also supports coat, skin, and hoof conditions.
Pure & Simple Balancer (Hallway)
NutritionNutrition
ProteinProtein
Ration BalancerRation Balancer
ToplineTopline
Pure & Simple Balancer from Hallway is marketed as a non-GMO ration balancer. Pure & Simple contains 14% protein and provides 1048 kcal per lb of digestible energy.

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