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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
Decade Challenger (Poulin Grain)
Caloric EnergyCaloric Energy
GrainsGrains
MareMare
PerformancePerformance
Decade Challenger by Poulin Grain is a pelleted feed for performance horses and broodmares. It provides 14% protein, 8% fat and 10% fiber.
Decade Complete Diet (Poulin Grain)
Complete FeedComplete Feed
FiberFiber
NutrientsNutrients
Weight IssuesWeight Issues
Decade Complete Diet by Poulin Grain is a high-fiber complete pelleted feed intended for horses in light work. It provides 13% protein, 3% fat, and 17.5% fiber.
Decade Endurance Sport (Poulin Grain)
Complete FeedComplete Feed
GrainsGrains
Mineral BalanceMineral Balance
VitaminsVitamins
Decade Endurance Sport by Poulin Grain is a pelleted feed intended for horses in light-moderate work. It provides 12% protein, 8% fat, and 10% fiber.
Decade Race Formula (Poulin Grain)
Complete FeedComplete Feed
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Decade Race Formula by Poulin Grain is a high-calorie, high-protein textured feed intended for race horses. It provides 13% protein, 7% fat, and 9.5% fiber.
Decade Sprint Extreme (Poulin Grain)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
Mineral BalanceMineral Balance
VitaminsVitamins
Decade Sprint Extreme by Poulin Grain is a textured feed for performance horses and broodmares. It provides 13% protein, 8% fat and 10% fiber.
Decade Stable Sweet Tradition (Poulin Grain)
Complete FeedComplete Feed
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Decade Stable Sweet Tradition by Poulin Grain is a textured feed intended for mature active horses. It provides 13% protein, 6% fat, and 15% fiber.
Diamond Balancer (Triple Crown)
Easy KeeperEasy Keeper
Grain FreeGrain Free
Metabolic SyndromeMetabolic Syndrome
NutrientsNutrients
Diamond Balancer by Triple Crown is a grain-free pelleted balancer formulated for adult horses with metabolic concerns. It provides 14% protein, 3% fat, and 15% fiber (as fed).
Diamond Perform (Triple Crown)
AntioxidantAntioxidant
FatFat
Gut HealthGut Health
PerformancePerformance
Diamond Perform from Triple Crown is a pelleted feed that is high in fat and fiber. It is intended for performance horses and is meant to assist with gut health and immunity.
Diamond Senior (Triple Crown)
FatFat
FiberFiber
NutrientsNutrients
SeniorSenior
Diamond Senior by Triple Crown is a high-fat, high-fiber feed specifically formulated for senior horses. It includes beet pulp as a fermentable fiber source to support optimal calorie intake.
Diamond Smart Chopped Forage (Triple Crown)
ForageForage
HealthHealth
PerformancePerformance
SeniorSenior
Diamond Smart Chopped Forage by Triple Crown is an orchard and alfalfa hay blend intended to provide a complete diet for performance and mature horses. It's chopped forage format is designed to support easier chewing and swallowing.
Diamond Smart Cube (Triple Crown)
DentalDental
ForageForage
PerformancePerformance
SeniorSenior
Diamond Smart Cubes by Triple Crown is a cube containing beet pulp, timothy hay and orchard hay. It is intended for performance and mature horses.
Diamond Smart Pellet (Triple Crown)
ForageForage
HealthHealth
PerformancePerformance
SeniorSenior
Diamond Smart Pellet by Triple Crown is a Teff hay pellet fortified with vitamins and minerals. It is intended for performance and mature horses.
Digest 911 (LMF Horse Feeds)
DigestionDigestion
HindgutHindgut
ProbioticProbiotic
YeastYeast
Digest 911 by LMF Horse Feeds is nutritional top dress designed to support digestive health in horses. It is contains yeast and added B-vitamins.
Distinguished (Hallway)
DigestionDigestion
Gut HealthGut Health
NutritionNutrition
SeniorSenior
Distinguished is a textured feed from Hallway feeds for senior horses fortified with Stamm 30, containing 14% protein and 10% fat. Distinguished uses soluble fibre from beet pulp, soy hulls, and chopped hay. It also contains added oil for energy.
DJ (Platinum Performance)
JointsJoints
Mineral BalanceMineral Balance
ProbioticProbiotic
VitaminsVitamins
Platinum Performance® DJ by Platinum Performance is a powdered vitamin and mineral supplement intended to support joint and digestive health. It contains ingredients such as flaxseed, rice bran, clay, yeast, and a blend of vitamins and minerals.
Double Play (Equi-lete)
Bone HealthBone Health
Gut HealthGut Health
ImmunityImmunity
PerformancePerformance
Double Play by Equi-lete is a vitamin and mineral supplement intended to support gastric health, performance, and the growth of bone and cartilage in performance horses.
DraversBrok (Havens Horsefeed)
ExerciseExercise
Hoof HealthHoof Health
NutritionNutrition
PerformancePerformance
DraversBrok by Havens Horsefeed is a high-energy feed intended for performance horses. It contains cereal grains, alfalfa, and flax oil as energy sources. This feed helps support optimal skin and hoof conditions.
Dyna Foal (Lakin Milling Company)
EnergyEnergy
FoalFoal
Mineral BalanceMineral Balance
NutritionNutrition
Dyna Foal from Lakin Milling Company is a pelleted feed intended for growing horses. Dyna Foal Horse Pellets contain a balanced calcium-to-phosphorus ratio intended for the growth and development of young horses.
Dynamite (Dynamite)
HealthHealth
Hoof HealthHoof Health
NutrientsNutrients
VitaminsVitamins
Dynamite by Dynamite is a supplement containing high amounts of selenium (44.4 ppm), it is intended to support overall health in all performance horses.
Dynasty Pro 14/6 Pellet (Blue Seal)-[Discontinued]
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
GrowthGrowth
NutritionNutrition
Dynasty Pro 14/6 Pellet was a pelleted feed containing 6% fat, 14% protein, fermentable fiber, nutrients, and yeast. This was feed targeted horses of all ages and supported growth, performance, breeding, and lactation.
Dynasty Senior 14/6 Pellet (Kent Equine) – [Discontinued]
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
FiberFiber
SeniorSenior
Dynasty Senior Pellet was high in fiber and provided added fat to maintain body condition in mature and senior horses. This feed contained a blend of vitamins and minerals, yeast cultures, and protein.
Dynasty Show 12/6 Pellet (Kent Equine) – [Discontinued]
Complete FeedComplete Feed
Competition HorsesCompetition Horses
ExerciseExercise
PerformancePerformance
Dynasty Show 12/6 Pellet was a horse feed designed to meet the energy needs of active adult horses. This feed provided 12% protein, 6% fat, digestible fiber, vitamins, minerals, essential amino acids, antioxidants, and yeast cultures.
Dynasty XT Pro 14/10 Textured Horse Feed (Blue Seal) – [Discontinued]
Complete FeedComplete Feed
FiberFiber
Low NSC FeedsLow NSC Feeds
MuscleMuscle
Blue Seal Dynasty XT Pro 14/10 is a textured horse feed made with shredded beet pulp. It provides 14% protein to support growing, performance and breeding horses.
E-Boost Paste (DAC)
EnergyEnergy
HealthHealth
NutrientsNutrients
VitaminsVitamins
E-Boost Paste by DAC is a vitamin and protein supplement. It is designed to help maintain normal energy levels.
E-TEC Balancer (Poulin Grain)
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
Ration BalancerRation Balancer
E-TEC Balancer is a ration balancer pellet for horses consuming unfortified grains or forage-only diets. It is intended for horses at different stages including performance, growing, breeding and metabolic horses.
E-TEC Carb Safe (Poulin Grain)
Complete FeedComplete Feed
Hoof HealthHoof Health
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Poulin Grain E-TEC® Carb Safe is a pelleted feed intended for horses that require lower sugar and starch content in their diet. It provides a maximum 5.5% NSC and can fed to overweight horses or those with metabolic concerns.
E-TEC Fibre-Max (Poulin Grain)
FatFat
FiberFiber
PerformancePerformance
ToplineTopline
E-TEC® Fibre-Max is a high fat (14%) and high fibre (20%) feed for performance horses that require higher calorie intakes. It provides 9.3% sugar and 7.4% starch for a total NSC of 16.7%.
E-TEC One (Poulin Grain)
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
YeastYeast
E-TEC One by Poulin Grain is a grain-free feed intended for all classes of horses and ponies. It provides 14% protein, 8% fat, and 18% fiber.
E-TEC Senior Low Carb (Poulin Grain)
FiberFiber
NutritionNutrition
SeniorSenior
Weight IssuesWeight Issues
E-TEC Senior Low Carb by Poulin Grain is a pelleted, grain- and molasses-free feed intended for senior horses that need to avoid sugars and starches. It contains 9.3% starch and 5% sugar.
E-TEC Senior Low Carb Complete (Poulin Grain)
DigestionDigestion
Grain FreeGrain Free
HealthHealth
SeniorSenior
E-TEC Senior Low Carb Complete from Poulin Grain is a senior feed that is grain and molasses free. It is meant for horses with problems chewing or hard keepers.
Easi Off-The-Track (Pryde’s EasiFeed)
Gut HealthGut Health
Hoof HealthHoof Health
NutrientsNutrients
Omega 3-6-9Omega 3-6-9
Easi Off-The-Track by Pryde's EasiFeed is a pelleted complete feed intended for ex-racehorses.
EasiMash (Pryde’s EasiFeed)
Caloric EnergyCaloric Energy
Coat QualityCoat Quality
Gut HealthGut Health
MuscleMuscle
EasiMash by Pryde's EasiFeed is a pelleted complete feed intended to help with muscle building in pleasure, endurance, performance and senior horses.
Easy Boy (Dynamite)
CalmingCalming
Competition HorsesCompetition Horses
HealthHealth
StressStress
Easy Boy is a calming supplement for horses from Dynamite. This supplement contains chelated magnesium and B-vitamins, intended to decrease nervous behaviour in horses.
Easy Keeper (Woody’s Horse Nutrition)
Easy KeeperEasy Keeper
FiberFiber
MetabolismMetabolism
Weight IssuesWeight Issues
Woody’s Easy Keeper is a complete pelleted feed with lower energy density intended for horses at maintenance or horses that need to lose weight. It contains 10.5% NSC and 5% fat.
ecube Complete Senior (Blue Seal)
FiberFiber
ForageForage
Mineral BalanceMineral Balance
VitaminsVitamins
ēcube Complete Senior is a complete horse feed in a large cube format. It is formulated with alfalfa and grass hays and provides less than 10% NSC. It is intended for mature horses but can be suitable for horses of all life stages.
Edge 14 (Hallway)
EnergyEnergy
FatFat
FiberFiber
NutritionNutrition
Edge 14 from Hallway is a feed fortified with Stamm 30, providing 14% protein, and 6% fat. This feed provides energy from digestible fibres and vegetable oil.
Eeze (Brooks Feeds)
Caloric EnergyCaloric Energy
FiberFiber
NutritionNutrition
PerformancePerformance
Eeze by Brooks Feeds is a textured feed for performance horses active in high-intensity disciplines requiring a reduced carbohydrate level. It draws energy primarily from digestible fibres and fats, including rice bran.
Eeze Pro-Plus (Brooks Feeds)
Complete FeedComplete Feed
FiberFiber
Low NSC FeedsLow NSC Feeds
PerformancePerformance
Eeze Pro-Plus is a calorie dense textured feed that is high fibre and fat for performance horses with a reduced carbohydrate level. Lab analysis provides a calculated NSC value of ~19%.
Element (Stride Animal Health) – [Discontinued]
ElectrolyteElectrolyte
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Element from Stride Animal Health is a mineral supplement that can assist with the general health of horses. It contains vitamins, minerals, and electrolytes.
Elite Performance (Equine Advantage)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
Competition HorsesCompetition Horses
PerformancePerformance
Elite Performance by Equine Advantage is designed for performance horses. This textured feed provides energy from starch and fat sources, with higher levels of biotin and Lysine.
Empower® Topline Balance® Ration Balancer (Nutrena)
Amino AcidAmino Acid
Grain FreeGrain Free
Ration BalancerRation Balancer
ToplineTopline
Nutrena Empower® Topline Balance® is a concentrated ration balancer to support topline and provide common nutrients lacking in forage. It contains 30% crude protein with added limiting amino acids.
Encompass (Hallway)
Mineral BalanceMineral Balance
NutritionNutrition
ProteinProtein
VitaminsVitamins
Encompass from Hallway Feeds is a cubed ration balancer for horses. It provides vitamins, minerals and 25% protein without significant caloric supplementation.
Endurance 10 (Banks Mill Feeds)
FiberFiber
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
Endurance 10 is a pelleted feed with no corn intended for mature horses and ponies. Energy sources include wheat middling, soybean hulls, cane molasses, and alfalfa meal.
Endurance 14 (Havens Horsefeed)
MuscleMuscle
NutritionNutrition
PerformancePerformance
StaminaStamina
Endurance 14 is a high-energy feed targeting endurance horses. It contains grains, oils, and antioxidants to support performance. This feed supports gastrointestinal health, muscle development and repair, and the nervous system.
Endurix (Cavalor)
EnergyEnergy
ElectrolyteElectrolyte
FatFat
PerformancePerformance
Cavalor Endurix is a feed mix meant for sport performance horses. It is a source of energy, pre- and probiotics, fat, vitamins and minerals.
Enhance 0.5 (Technique)
Complete FeedComplete Feed
HealthHealth
NutrientsNutrients
NutritionNutrition
Enhance 0.5 by Technique is a non-soy pelleted feed intended to meet the nutritional needs of all horse types.
Enhancer (Brooks Feeds)
Metabolic SyndromeMetabolic Syndrome
Organic Trace MineralsOrganic Trace Minerals
Ration BalancerRation Balancer
VitaminsVitamins
Brooks Enhancer is a low-calorie pelleted ration balancer formulated to provide vitamins and minerals required in the equine diet. It contains a mix of organic and inorganic minerals and has a low NSC content ideal for horses prone to laminitis.
Enrich Plus Ration Balancing Concentrate (Purina)
Easy KeeperEasy Keeper
NutritionNutrition
Ration BalancerRation Balancer
VitaminsVitamins
Purina Enrich Plus Ration Balancing is a concentrated, pelleted formula intended for easy keepers, growing horses, breeding stallions, and early gestation mares. It contains 32% crude protein and 15% NSC.
Enrich Plus Senior (Purina)
Complete FeedComplete Feed
DentalDental
FiberFiber
SeniorSenior
Enrich Plus Senior Ration Balancing Horse Feed by Purina is a complete pelleted feed intended for senior horses. It is to be fed in addition to forage.
Enrichment (Excel Equine)
DigestionDigestion
HealthHealth
Metabolic SyndromeMetabolic Syndrome
SeniorSenior
Enrichment by Excel Equine is a specially formulated pelleted feed designed for senior horses with chronic health conditions. It contains 26% protein, 6% fiber, and 3% fat to support their unique nutritional needs.

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