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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.

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 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.
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.
Senior Gold (Triple Crown)
DentalDental
DigestionDigestion
FatFat
SeniorSenior
Triple Crown Senior Gold is a grain-free, beet pulp-based soft feed intended for older horses. It contains 14.5% protein, 12.5% fat and 9% NSC. Senior Gold can be mixed with water to form a mash for horses with dental issues or prone to choke.
Senior Health & Wellness (Farnam)
Gut HealthGut Health
Mineral BalanceMineral Balance
SeniorSenior
VitaminsVitamins
Farnam's Senior Health & Wellness supplement is formulated for senior horses in light work or at maintenance. Senior Health and Wellness is an extruded nugget feed containing amino acids, vitamins, and minerals for horses on a forage-only diet.
Senior Horse (Sprout)
Amino AcidAmino Acid
NutrientsNutrients
SeniorSenior
VitaminsVitamins
Senior Horse by Sprout is a pelleted maintenance feed specially formulated for senior horses. It contains added lysine and biotin.
Senior Horse Pelleted (Agrimaster)
DigestionDigestion
HealthHealth
ImmunityImmunity
SeniorSenior
Senior Horse Pelleted by Agrimaster is a pelleted feed intended to meet the nutritional requirements of senior horses.
Senior Horse Rations (Jones Horse Feeds)
Complete FeedComplete Feed
FatFat
Gut HealthGut Health
SeniorSenior
Jones Senior Horse Pellet is a complete feed designed with a high fat content (10%) from rice bran. It also contains elevated levels of protein, vitamins and minerals to support mature horses.
Senior Pellet (Right Choice)
FatFat
FiberFiber
NutritionNutrition
SeniorSenior
Senior by Right Choice is a pelleted complete feed intended for senior horses with elevated protein. It contains 14% protein, 7% fat, and 19% NSC.
Senior Pelleted (Woody’s Horse Nutrition)
DigestionDigestion
FiberFiber
Gut HealthGut Health
SeniorSenior
Woody's Senior Pelleted is a complete pelleted grain-free feed intended for senior horses. It contains digestible fibre sources for horses that can no longer chew long-stem hay.
Senior Ration (Hoffman’s Horse Products)
Complete FeedComplete Feed
Feed EfficiencyFeed Efficiency
SeniorSenior
Weight IssuesWeight Issues
Hoffman's Senior Horse Ration is a feed designed for senior horses that need extra caloric energy to maintain weight. This feed contains 17.5% NSC with moderate fat content (5%) and high fibre content (24%).
Senior Sport (Tribute)
Complete FeedComplete Feed
ExerciseExercise
FiberFiber
SeniorSenior
Tribute Senior Sport™ is a high calorie feed for mature performance horses. It provides 16.5% NSC with 10% fat and 18% fibre to support performance.
Senior Sport with Glucosamine (Tribute)
ExerciseExercise
FatFat
FiberFiber
SeniorSenior
Senior Sport with Glucosamine by Tribute is a textured feed for seniors with added glucosamine that intends to support joint health. It contains high fat and fibre to support calmer performances.
Senior Textured (Woody’s Horse Nutrition)
Caloric EnergyCaloric Energy
FatFat
ProteinProtein
SeniorSenior
Woody’s Senior Textured is a complete textured feed formulated for senior horses. It contains 10% fat and is made with oats, beet pulp, molasses, and vegetable oil. The crude protein in this feed has added amino acids to help maintain muscle mass.
Senior Textured Feed (ProElite)
DigestionDigestion
Feed EfficiencyFeed Efficiency
PerformancePerformance
SeniorSenior
Pro Elite Senior Textured Feed is a high fat (10%) and protein (14%) senior complete feed. It is appropriate for senior horses that need help maintaining or gaining weight.
Seniority GC Plus (Tribute Equine)
Complete FeedComplete Feed
JointsJoints
RespiratoryRespiratory
SeniorSenior
Tribute Seniority™ GC Plus is a textured, complete feed for mature horses that contains additional ingredients to support joint health. It is formulated with glucosamine, chondroitin sulfate, and MSM.
Seniority Low NSC (Tribute)
Complete FeedComplete Feed
HealthHealth
Low NSC FeedsLow NSC Feeds
NutritionNutrition
Seniority Low NSC from Tribute is a complete feed containing 10% NSC (Starch + Sugar). This feed is intended for horses with sugar and starch sensitivities.
Seniority Pellet (Tribute)
Amino AcidAmino Acid
Complete FeedComplete Feed
PerformancePerformance
SeniorSenior
Seniority Pellet is a pelleted complete feed formulated for adult and senior horses. It is a low-calorie feed with a high feeding rate and can be used to replace forage in the diet.
Seniority™ Pellet (Tribute)
Complete FeedComplete Feed
HealthHealth
NutrientsNutrients
Ration BalancerRation Balancer
Tribute Seniority™ Pellet is an 18% NSC complete feed for mature horses. It provides energy from digestible fiber sources including dehulled soybean and alfalfa meal, wheat middlings, and beet pulp.
Sentinel Active Senior (Blue Seal)
ExerciseExercise
FatFat
FiberFiber
SeniorSenior
Blue Seal Sentinel Active Senior is a pelleted feed formulated for active senior horses or hard-keepers. With energy sources such as wheat middlings, soybean hulls, and soybean oil, Sentinel Active Senior contains 19.7% NSC.
Sentinel Care Carb-Guard (Blue Seal)
FiberFiber
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Blue Seal Sentinel Care Carb-Guard is a pelleted feed formulated for adult horses with metabolic or digestive health concerns. It contains 10% NSC and is a high-fiber formula.
Sentinel Care Equine Choice Topline 30 (Blue Seal)
Easy KeeperEasy Keeper
ProteinProtein
Ration BalancerRation Balancer
ToplineTopline
Blue Seal Sentinel Care Equine Choice Topline 30 is a pelleted ration balancer with 14.7% NSC. It is formulated to provide protein, vitamins, and minerals that may be lacking in the equine diet.
Sentinel Care Omegatin (Blue Seal)
FatFat
PerformancePerformance
ProteinProtein
Ration BalancerRation Balancer
Sentinel Care Omegatin from Blue Seal is a high-fat supplement intended for horses requiring additional calories. It is a 15.7% NSC formula containing high fat ingredients such as rice bran and soybean oil.
Sentinel Grow & Excel GX (Blue Seal)
ExerciseExercise
FoalFoal
GrowthGrowth
PerformancePerformance
Sentinel Grow & Excel GX is an extruded feed for hard keepers as well as growing, breeding, and performance horses. It provides 10% crude fat, 15% fiber, and a maximum of 17% NSC.
Sentinel LifeTime (Blue Seal)
FatFat
FiberFiber
JointsJoints
PerformancePerformance
Sentinel LifeTime is an extruded feed intended for junior, adult and senior horses that require a higher caloric density. It provides 10% fat, 20% fibre and a maximum NSC of 14.5%.
Sentinel Performance LS (Blue Seal)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
PerformancePerformance
SeniorSenior
Blue Seal Sentinel® Performance LS is an extruded feed providing a maximum of 14% NSC. It is intended for horses requiring a higher calorie diet, such as equine athletes and hard keepers.
Sentinel Safe Start SS (Blue Seal)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
LactationLactation
Sentinel Safe Start SS is an extruded complete feed formulated for broodmares and growing foals. It provides higher protein content (16%) to meet the increased demands of late gestation, early lactation, and developing foals.
Sentinel Senior SR (Blue Seal)
DentalDental
Feed EfficiencyFeed Efficiency
Ration BalancerRation Balancer
SeniorSenior
Sentinel Senior SR is an extruded feed for older horses and mature easy keepers. It is formulated to provide higher feed efficiency for senior horses with gut issues or poor teeth. The addition of bioavailable marine-sourced calcium supports gastric pH and health.
Sentinel Simply Lite (Blue Seal)
Easy KeeperEasy Keeper
Gut HealthGut Health
Metabolic SyndromeMetabolic Syndrome
ProbioticProbiotic
Sentinel Simply Lite from Blue Seal is a low-calorie pelleted feed intended for adult horses. Formulated for easy keepers, Sentinel Simply Lite provides lower fat and protein content with 16.2% NSC.
Sentinel XT Grow (Blue Seal)
FiberFiber
FoalFoal
GrowthGrowth
LactationLactation
Sentinel® XT™ Grow is a textured horse feed intended for growing foals and lactating mares. It provides 10% fat and 16% protein with primary ingredients including soybean hulls, beet pulp and alfalfa meal.
Sentinel XT Pro (Blue Seal)
GrowthGrowth
NutrientsNutrients
PerformancePerformance
SeniorSenior
Sentinel XT Pro by Blue Seal is a textured feed intended for growing horses, performance horses, gestating mares, breeding horses and senior horses.
Sentinel XT Show (Blue Seal)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
ExerciseExercise
Weight IssuesWeight Issues
Sentinel® XT™ Show is a textured feed intended for active adult horses and competition horses with higher nutrient requirements. It provides a higher fat content (12%) and digestible fibre sources including soybean hulls, beet pulp and alfalfa meal.
Sho-Hoof (Manna Pro)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Sho-Hoof by Manna Pro is an equine hoof supplement that contains biotin, copper, zinc, and amino acids. It is intended to promote healthy hooves, skin, and coat through the inclusion of omega-3 fatty acids.
Show Formula (Seminole)
Competition HorsesCompetition Horses
ExerciseExercise
FatFat
PerformancePerformance
Seminole Show Formula is a textured feed for adult show and competition horses because of it's high calorie and energy density. Show Formula contains yeast cultures, chelated minerals, and antioxidants.
Showman (ProElite)
Complete FeedComplete Feed
Low NSC FeedsLow NSC Feeds
MuscleMuscle
PerformancePerformance
ProElite by Showman is a pelleted, extruded feed intended for mature horses in moderate to intense work. It is intended to be a low glycemic feed for supporting muscle strength.
Showtorque (Hygain)
Complete FeedComplete Feed
FatFat
MuscleMuscle
ProteinProtein
Showtorque by Hygain is a high-protein and fat pelleted feed designed for performance horses. It contains 20% protein, 9% fat, and 16% fibre with added yeast for improved digestion.
Signature Elite (Banks Mill Feeds)
Mineral BalanceMineral Balance
MuscleMuscle
PerformancePerformance
VitaminsVitamins
Banks Signature Elite is a beet pulp-based textured feed that provides high fat and fibre with probiotics. It is intended for mature horses in work.
Signature Prime (Banks Mill Feeds)
Mineral BalanceMineral Balance
NutrientsNutrients
SeniorSenior
VitaminsVitamins
Banks Signature Prime is a high-fat beet pulp-based textured feed with no corn. It is intended for senior horses as well as mature horses that need to gain weight.
Simplici-T Concept (Purina)
BroodmareBroodmare
Complete FeedComplete Feed
ExerciseExercise
StallionStallion
Simplici-T Concept is a pelleted, high fiber feed formulated for active pleasure horses. It provides low fat (2%) and moderate protein (12%), with ingredients such as soy hulls, ground corn and wheat shorts.
Simplici-T Pro Grain (Purina)
BroodmareBroodmare
Complete FeedComplete Feed
ExerciseExercise
StallionStallion
Simplici‑T Pro Grain is a textured feed for active adult horses and breeding horses. It is intended for use at boarding and recreational stables to support the needs of pleasure horses.
Sleek (Banks Mill Feeds)
FatFat
FiberFiber
MuscleMuscle
PerformancePerformance
Sleek by Banks Feed Mill is a high-fat, beet pulp-based feed with low (7%) starch content. It contains 13% fat from flax, rice bran, and soybean oil.
Smartamine M (Adisseo)
Amino AcidAmino Acid
GrowthGrowth
Hoof HealthHoof Health
IngredientIngredient
Smartamine M is a source of the amino acid methionine. Methionine is often considered the second or third limiting amino acid in equine diets.
Smartamine ML (Adisseo)
Amino AcidAmino Acid
GrowthGrowth
IngredientIngredient
ProteinProtein
Smartamine ML is a source of the amino acids methionine and lysine. Methionine and lysine are two of the limiting amino acid in equine diets. Supplementation may support topline and muscle growth.
SmartBug-Off (SmartPak)
HerbHerb
ImmunityImmunity
NutrientsNutrients
Skin + HairSkin + Hair
SmartBug-Off is a pelleted horse supplement to deter biting insects and support skin health. It contains MSM, DL-methionine, garlic, apple cider vinegar, grape seed extract and other ingredients.
SmartBug-Off Pellets (SmartPak)
HealthHealth
HerbHerb
ImmunityImmunity
Skin + HairSkin + Hair
SmartPak's SmartBug-Off Pellets is a horse supplement that contains ingredients like garlic purported to deter biting insects. It also provides ingredients that support skin health.
SmartBug-Off Ultra Pellets (Smart Pak)
Coat QualityCoat Quality
HealthHealth
ImmunityImmunity
NutritionNutrition
SmartBug-Off Ultra Pellets from SmartPak is a pelleted supplement intended for horses who are bothered by flies. SmartBug-Off Ultra Pellets contain garlic and apple cider vinegar intended to decrease the fly load on horses.
SmartBug-Off Ultra Pellets (SmartPak)
Coat QualityCoat Quality
HealthHealth
HerbHerb
Skin + HairSkin + Hair
SmartBug-Off Ultra Pellets from SmartPak is a pelleted equine supplement intended to help horses who are bothered by flies. This supplement is formulated with garlic and apple cider vinegar intended to decrease the fly load on horses.
SmartCombo Senior Ultra (SmartPak)
Gut HealthGut Health
Hoof HealthHoof Health
JointsJoints
SeniorSenior
SmartCombo Senior Ultra is a pelleted supplement intended for senior horses containing glucosamine, chondroitin sulfate, hyaluronic acid, MSM, biotin, omega 3 fatty acids, probiotics, prebiotics, and digestive enzymes.
SmartCombo Ultra Pellets (SmartPak)
Coat QualityCoat Quality
Hoof HealthHoof Health
JointsJoints
YeastYeast
This supplement made for horses by SmartPak is meant to support the health of hooves, joints, coat, and digestion. It is pelleted and contains yeast.
SmartFlex Rehab Pellets (SmartPak)
ExerciseExercise
JointsJoints
ProteinProtein
RecoveryRecovery
SmartFlex Rehab Pellets is a supplement intended for horses rehabilitating from an injury. It contains glucosamine, chondroitin sulfate, and hyaluronic acid for joints and connective tissue.
SmartGain (SmartPak)
DigestionDigestion
IngredientIngredient
NutritionNutrition
YeastYeast
SmartGain from SmartPak is a powdered weight gain equine supplement. SmartGain is formulated with rice bran and coconut meal. This supplement includes added lysine, methionine and threonine intended to support healthy body condition.
SmartHoof® Pellets (SmartPak)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
SmartHoof® Pellets by SmartPak is a pelleted hoof supplement containing 25 mg of biotin and methionine, lysine, threonine, and gelatin. This supplement provides the necessary nutrient to grow strong, resilient hooves.
SmartMuscle Mass (SmartPak)
Amino AcidAmino Acid
Competition HorsesCompetition Horses
MuscleMuscle
PerformancePerformance
SmartMuscle® Mass Pellets is an amino acid supplement for horses, containing branched chain amino acids (BCAAs) and whey protein. It is formulated to support muscle development.

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