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Thiamine Mononitrate (Vitamin B1) - Feed Ingredient

Thiamine mononitrate is a stable, synthetic form of Vitamin B1 (thiamine), commonly used in animal feed and supplements. It plays a crucial role in carbohydrate metabolism, aiding in the conversion of glucose into energy. This vitamin is also essential for proper nerve function, muscle coordination, and overall metabolic health. Horses typically obtain thiamine from their diet through cereal grains, brans, and brewer’s yeast, while microbial synthesis in the hindgut also contributes to their daily needs.

Deficiency of thiamine in horses is uncommon but can occur due to factors such as prolonged antibiotic use, excessive grain intake, or consumption of plants containing thiaminase (e.g., bracken fern or horsetail), which degrade the vitamin. Symptoms of deficiency may include weight loss, muscle weakness, incoordination, and nervous system disorders. Thiamine mononitrate supplementation may be recommended in cases where dietary intake is insufficient or when horses experience stress, intense exercise, or digestive disturbances. Since Vitamin B1 is water-soluble, toxicity is rare, and excess amounts are excreted in the urine.

The following equine feeds, supplements and products contain Thiamine Mononitrate (Vitamin B1) as an ingredient.

Feeds, Supplements & Products
JuniorGLO Horse Pellet (ADM Animal Nutrition)
Bone HealthBone Health
FoalFoal
GrowthGrowth
ProteinProtein
JuniorGLO is a concentrated feed designed for foals, growing horses, and broodmares intended for feeding alongside a good-quality forage. It contains ingredients to support gut health, bone growth, and muscle development.
Just Add Oats (Natural Horse Vet)
Mineral BalanceMineral Balance
NutritionNutrition
ProbioticProbiotic
VitaminsVitamins
Just Add Oats by Natural Horse Vet is a powdered supplement intended to provide the vitamins and minerals to complete grain mixes and help balance out mixed grass, legume and grass hay.
Kalm N EZ GC Plus (Tribute)
Complete FeedComplete Feed
FatFat
FiberFiber
JointsJoints
Kalm 'N EZ GC Plus is a pelleted complete feed with added glucosamine, chondroitin sulfate, and methylsulfonlymethane (MSM). It contains 14% crude protein, 8% crude fat and an NSC of 13.5%.
Kalm N EZ Pellets (non-GMO) (Tribute)
Complete FeedComplete Feed
DigestionDigestion
FatFat
FiberFiber
Kalm 'N EZ Pellets (non-GMO) is a complete pelleted feed made with non-GMO soybean hulls and other ingredients. It contains 14% crude protein, 8% crude fat and 13.5% NSC.
Kalm N EZ Pellets (Tribute)
Complete FeedComplete Feed
DigestionDigestion
FatFat
FiberFiber
Tribute Kalm 'N EZ Pellet is a complete horse feed formulated with no corn, oats, or molasses. Providing 13.5% NSC, this feed is appropriate for horses that require a low NSC diet.
Kalm N EZ Soy-Free Pellet (Tribute)
Complete FeedComplete Feed
FatFat
FiberFiber
NutritionNutrition
Kalm N EZ Soy-Free Pellet by Tribute is a pelleted feed that contains no corn, oats or molasses. It is intended for horses with special needs to provide higher fat and fibre to support calmer performances.
Kalm N EZ Textured (Tribute)
EnergyEnergy
ExerciseExercise
FiberFiber
Gut HealthGut Health
Kalm 'N EZ Textured is a textured complete feed with whole oats added. It is formulated to provide highly digestible energy at a lower NSC. It contains 14% crude protein, 6% crude fat, and 15.5% NSC.
Kalm N’ Fit (Tribute Equine)
Complete FeedComplete Feed
DigestionDigestion
FatFat
FiberFiber
Kalm 'N Fit® is a corn-free, high-fat, textured feed for exercising mature horses. It is formulated for horses consuming lower protein forages and contains steam-crimped grains to improve digestibility.
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.
Kalm+ Wafer (Majesty’s)
Amino AcidAmino Acid
CalmingCalming
NutrientsNutrients
VitaminsVitamins
Kalm+ is intended to be used as a calming supplement for adult horses and ponies. This diet could be beneficial for horses subjected to frequent travelling or competitions.
Kentucky Lite E (Havens Horsefeed)
Caloric EnergyCaloric Energy
ExerciseExercise
FatFat
VitaminsVitamins
Kentucky Lite E is a high-energy, grain-based feed providing 61% carbohydrates for performance horses. Ingredients include oats, barley, corn, and wheat. This feed supplies 400mg of Vitamin E to support muscle condition.
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 intended to help minimize incidences and/or severity of gastric ulcers in horses.
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.
Lakin Lite (Lakin Milling Company)
Easy KeeperEasy Keeper
IngredientIngredient
NutrientsNutrients
NutritionNutrition
Lakin Lite from Lakin Milling Company is a pelleted feed intended for horses who are in a low level of work. Lakin Lite Horse Pellets are formulated with alfalfa and Bermuda hays.
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.
Large Alfalfa Bermuda Pellets (DuMOR)
FiberFiber
ForageForage
Gut HealthGut Health
ProteinProtein
Large Alfalfa Bermuda Pellets by DuMor are forage pellets for horses at maintenance or in work. Alfalfa supports digestive health and is a source of protein and calcium.
Leading Edge – Pelleted (Brooks)
AntioxidantAntioxidant
Competition HorsesCompetition Horses
PerformancePerformance
PrebioticPrebiotic
Leading Edge Pelleted by Brooks is a feed intended for horses in heavy training and competition.
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.
Leisure (Seminole) – [Discontinued]
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
SeniorSenior
Seminole Leisure is a now-discontinued pelleted feed for mature horses. It provided 11% protein, 3% fat and 22% crude fiber.
Lektra L’eau (Dynavyte)
ImmunityImmunity
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Lektra L'eau by Dynavyte is a powdered vitamin and mineral supplement. It is intended to replace minerals lost through heavy sweating in horses.
Level Out (Excel Equine Feeds)
DigestionDigestion
NutrientsNutrients
PrebioticPrebiotic
ProbioticProbiotic
Level Out by Excel Equine Feeds is a pelleted horse treat intended to support the digestive health of horses.
Lifeforce Elite Performance (Alltech)
JointsJoints
PerformancePerformance
RecoveryRecovery
StressStress
LifeForce Elite Performance by Alltech is a powdered supplement intended to support complete wellness in performance horses.
Liquid 747 (Tuttle’s)
Amino AcidAmino Acid
Coat QualityCoat Quality
Mineral BalanceMineral Balance
VitaminsVitamins
Liquid 747 by Tuttle's is an apple flavoured liquid vitamin and mineral supplement. It contains trace minerals and amino acids to support growth and performance.
Lite (Triple Crown)
FiberFiber
HealthHealth
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 & Low (CFC Farm Home Center)
FiberFiber
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
VitaminsVitamins
Lite & Low from CFC Farm Home Center is a pelleted feed meant for maintenance horses or light work. It contains low sugar and starch.
Llama Concentrate Pellet (Bar Ale)
FiberFiber
HealthHealth
NutritionNutrition
VitaminsVitamins
Llama Concentrate Pellet is a pelleted feed intended for llamas of all ages. It contains 18% protein, 2.9% fat, and 18.5% fiber.
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 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 Super Supplement G NW (LMF Horse Feeds)
Mineral BalanceMineral Balance
Omega 3-6-9Omega 3-6-9
ProteinProtein
VitaminsVitamins
LMF Super Supplement G NW is a ration balancer that contains the essential vitamins and minerals to complement a forage diet. It is a low intake balancer that includes nutrient sources such as soybean meal, barley, and wheat.
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.
Longevity (McCauley’s Equine Formulas)
Gut HealthGut Health
SeniorSenior
StressStress
Weight IssuesWeight Issues
Longevity is a pelleted horse feed targeted to senior and stressed horses. It is designed to support body condition and gut health in senior horses.
Low ‘N Steady (Buckeye)
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
NutrientsNutrients
SeniorSenior
Low 'N Steady by Buckeye is a low NSC (8.5%) ration balancer intended for mature horses, and metabolic horses or ponies.
Low Molasses 12% (Brooks)
Easy KeeperEasy Keeper
NutritionNutrition
PerformancePerformance
SeniorSenior
Brooks 12% from Brooks is a textured horse feed. 12% Sweet Feed is intended for mature horses. This feed contains 12% crude protein and 4% fat.
Low Non-Structural Carbohydrate Feed (LMF Horse Feeds)
Amino AcidAmino Acid
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
VitaminsVitamins
This feed from LMF Horse Feeds contains low levels of starch and sugar. It is a pelleted feed that is meant to provide minerals, vitamins, amino acids, and omega fatty acids.
Low Starch (Banks Mill Feeds)
Grain FreeGrain Free
Mineral BalanceMineral Balance
ProteinProtein
VitaminsVitamins
Banks Low Starch is a 14.5% NSC feed intended for horses at risk of digestive upsets and metabolic concerns. This corn-free feed contains wheat middling, soybean meal, vegetable oil, and cane molasses.
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 corn, 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.
LQ-Performance (DAC)
HealthHealth
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
LQ-Performance by DAC is a liquid vitamin and mineral supplement. It is formulated with chelated trace minerals, selenium, and chromium.
Luminance Fortified Equine Conditioning Supplement (Hallway Feeds)
Caloric EnergyCaloric Energy
Omega 3-6-9Omega 3-6-9
PerformancePerformance
Weight IssuesWeight Issues
Hallway Luminance is a fat supplement for horses that require additional body condition. It is formulated to add calories to the diet for performance horses and horses being prepared for sale.
M10 Balancer (McCauley’s)
Easy KeeperEasy Keeper
Mineral BalanceMineral Balance
SeniorSenior
VitaminsVitamins
M10 Balancer by McCauley's is a pelleted vitamin and mineral supplement intended for horses at maintenance or in light work.
M30 (McCauley’s)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
PerformancePerformance
M30 by McCauley's is a supplement intended to balance the diet of all horse types.
MagCalm (Equestrizone)
CalmingCalming
EnergyEnergy
IngredientIngredient
PerformancePerformance
MagCalm from Equestrizone is a natural equine calming supplement with equal parts magnesium and potassium to help ease horses who become anxious or over-excited. It can also support stamina and energy levels.

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