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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
101 Diet Balancer (Stride Animal Health)
Amino AcidAmino Acid
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
VitaminsVitamins
101 Diet Balancer is a vitamin and mineral supplement intended to balance forage- and grain-based diets. This concentrated supplement has a lower NSC content and contains organic trace minerals, yeast, and digestive enzymes.
1093 – Track Star 3 (Lone Star)
BroodmareBroodmare
Caloric EnergyCaloric Energy
FoalFoal
StallionStallion
Track Star 3 by Lone Star is a sweet feed fortified with vitamins, it is intended for broodmares, stallions and foals.
11% Sweet Pellets (Manna Pro)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
FlavorFlavor
NutritionNutrition
11% Sweet Pellets from Manna Pro is a fortified pelleted feed for horses, cattle, and goats at maintenance. 11% Sweet Pellets contains 11% crude protein, 3% crude fat, and 24% crude fibre.
12-8 Hi Fat Horse Pellet (Bryant Grain)
FatFat
HealthHealth
NutritionNutrition
PerformancePerformance
12-8 Hi Fat Horse Pellet from Bryant Grain is a pelleted feed intended for performance horses. This feed contains 12% crude protein and 8% fat.
12% All Stock (Sweet Country Feeds)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
12% All Stock by Sweet Country Feeds is a textured feed intended for horses at maintenance, cattle, sheep, and goats. It is a grain-based feed that does not contain added copper.
12% Horse Pellet (Bryant Grain)
BroodmareBroodmare
HealthHealth
NutritionNutrition
PerformancePerformance
12% Horse Pellet from Bryant Grains is a pelleted feed intended for mature performance horses and broodmares. This feed is 12% crude protein and 10.50% crude fibre. 12% Horse Pellet contains added vitamins and minerals.
12% Max Performance (Quality Feeds)
Easy KeeperEasy Keeper
GrowthGrowth
HealthHealth
PerformancePerformance
12% Max Performance by Quality Feeds is a textured sweet feed intended to support growth and performance in maintenance, light work and breeding horses.
12% Pellet (Sweet Country Feeds)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
NutritionNutrition
ProteinProtein
12% Pellet by Sweet Country Feeds is a grain-based feed that provides 12% protein and 4% fat. It contains added inorganic trace minerals and vitamins.
12% Pleasure Horse (Sweet Country Feeds)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
GrainsGrains
NutritionNutrition
Sweet Country 12% Pleasure Horse is a textured feed intended for mature horses. It provides 12% crude protein in a grain-based formula containing corn, oats, wheat middlings and soybean meal.
12% Select Horse (Sweet Country Feeds)
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
Organic Trace MineralsOrganic Trace Minerals
12% Select Horse by Sweet Country Feeds is a grain-based feed that provides 12% protein and 4% fat. It contains added vitamins, as well as inorganic and organic trace minerals.
12% Sweet Performance Ration (Bryant Grain)
DigestionDigestion
HealthHealth
NutritionNutrition
SeniorSenior
12% Sweet Performance Ration from Bryant Grain contains a blend of corn, barley and oats. This feed is intended for mature horses at maintenance.
12% Textured (Sweet Country Feeds)
Complete FeedComplete Feed
FlavorFlavor
HealthHealth
NutritionNutrition
12% Textured by Sweet Country Feeds is designed to be a palatable feed that provides 12% protein and 2.5% fat. It contains added vitamins and a blend of organic and inorganic minerals.
120-6 Horse Pellet (Bartlett Milling) [Discontinued]
ExerciseExercise
HealthHealth
NutritionNutrition
ProteinProtein
120-6 Horse Pellet is a 12% protein and 6% fat feed that is formulated with wheat, corn, alfalfa and soy products. It is intended for light to moderate working horses.
14% Hi-Fat Sweet (Bryant Grain)
FatFat
HealthHealth
NutritionNutrition
PerformancePerformance
14% Hi-Fat Sweet from Bryant Grain is a textured feed intended for performance horses. This feed contains a blend of oats, corn, barley and soybean oil. 14% Hi-Fat Sweet contains 14% crude protein and 7% crude fat.
14% Max Performance (Quality Feeds)
EnergyEnergy
FoalFoal
PerformancePerformance
StallionStallion
14% Max Performance by Quality Feeds is a textured sweet feed containing oats, corn oil and soybean oil. It is intended for foals, mares, stallions and performance horses.
14% Performance (Running Horse)
Complete FeedComplete Feed
GrowthGrowth
LactationLactation
PerformancePerformance
Running Horse Performance is a texturized 14% protein and 6% fat feed formulated for performance, breeding and growing horses. It provides a higher energy density for equine athletes.
14% Performance Formula (Triple Crown) – [Discontinued]
ExerciseExercise
FlavorFlavor
PerformancePerformance
Weight IssuesWeight Issues
Triple Crown 14% Racing Formula is a discontinued feed which was a high-fat, high-energy feed containing a blend of grains and fat sources. It was designed for young performance horses, broodmares, breeding stallions, yearlings and weanlings.
14% Racing Formula (Triple Crown)-[Discontinued]
EnergyEnergy
ExerciseExercise
NutritionNutrition
PerformancePerformance
Triple Crown 14% Racing Formula is a high calorie textured feed containing a blend of grains with soybean meal and molasses. It is intended for young performance horses, broodmares, breeding stallions and growing foals.
14% Senior Textured (Tribute)
Complete FeedComplete Feed
FatFat
NutritionNutrition
SeniorSenior
Tribute 14% Senior Textured is a complete feed for mature horses composed of steam-rolled oats, barley, dried beet pulp, extruded whole soybeans, and dehydrated alfalfa meal.
14% Soy-Free All Stock Pellet (Non-GMO) (Sweet Country Feeds)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
14% Soy-Free All Stock Pellet by Sweet Country Feeds is a pelleted feed with 14% crude protein, 4% fat, and 15% crude fiber. The main ingredients include wheat middlings, alfalfa meal, flaxseed, and molasses.
16% All Stock Pellet (Sweet Country Feeds)
Complete FeedComplete Feed
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
16% All Stock Pellet by Sweet Country Feeds is a pelleted feed intended for multiple species including horses. It does not contain added copper and is safe for sheep.
16% Mare & Foal (Bryant Grain)
GrowthGrowth
HealthHealth
MareMare
NutritionNutrition
16% Mare & Foal from Bryant Grain is a pelleted feed intended for mares, weanlings and yearlings. This feed contains 16% crude protein and 5% fat.
18% A/N (Agassiz Feeds)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
18% AN by Agassiz Feeds is a protein, energy, mineral, and vitamin lick designed for beef cattle on a forage-based diet. It is a molasses-based lick that contains a minimum of 30% protein.
3 Wire Horse (Hay & Grain) Pellets (Kelley’s Feed)
FiberFiber
ForageForage
FlavorFlavor
NutritionNutrition
Kelley's 3 Wire Horse is an alfalfa-based pelleted feed with ground grain as well as added molasses, vitamins, and minerals. This hay and grain pellet contains 12.5% protein and 1.5% fat.
30% Ration Balancer (Equine Advantage)
Omega 3-6-9Omega 3-6-9
ProteinProtein
Ration BalancerRation Balancer
VitaminsVitamins
30% Ration Balancer is intended to be fed alongside pasture or hay. It contains essential nutrients to support normal gut health, healthy hooves and coats.
30% Tub (Agassiz Feeds)
Mineral BalanceMineral Balance
NutritionNutrition
ProteinProtein
VitaminsVitamins
30% Tub by Agassiz Feeds is a protein, energy, mineral, and vitamin lick designed for beef cattle on a forage-based diet. It is a molasses-based lick that contains a minimum of 30% protein, with the protein being sourced from natural sources (no urea or feather meal).
34% Horse Supplement (Kalmbach Feeds)
Amino AcidAmino Acid
MuscleMuscle
NutritionNutrition
ProteinProtein
34% Horse Supplement by Kalmach Feeds is a pelleted supplement that provides 34% crude protein, as well as vitamins and minerals. It is designed to be mixed into complete rations for a wide range of horses.
35% Horse Supplement (Kalmbach Feeds)
Amino AcidAmino Acid
MuscleMuscle
NutrientsNutrients
ProteinProtein
35% Horse Supplement by Kalmach Feeds is an equine supplement pellet that provides 35% protein, vitamins, and minerals. It can be mixed to create a complete ration for a wide range of horses.
6-3 Cube Liberte (Nature Belisle)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
YeastYeast
6-3 Cube Liberte is an equine vitamin and mineral pelleted supplement for growing foals, broodmares and horses at maintenance or in training. This version of this supplement does not contain insect repulsion ingredients.
ABC’s Fortified G. R. P. (Advanced Biological Concepts)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ABC's Fortified G.R.P. by Advanced Biological Concepts is a supplement intended for horses and ponies of all ages and work levels. It contains 10% protein, 3% fat, and 17% fibre.
ABC’s Fortified Equine Supplement (Advanced Biological Concepts)
HealthHealth
Mineral BalanceMineral Balance
ProbioticProbiotic
VitaminsVitamins
ABC's Fortified Equine Supplement is a pelleted supplement that intends to be fed as a ration balancer for all life stages of horses. It contains vitamins, minerals, and probiotics for nutrient absorption.
ABC’s Rush Creek 1:1 Mineral (Advanced Biological Concepts)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ABC's Rush Creek 1:1 Mineral by Advance Biological Concepts is a free choice mineral supplement. It is intended for horses and ponies of all ages and work levels.
Accel Health and Wellness Formula (Vita Flex)
HealthHealth
Mineral BalanceMineral Balance
MuscleMuscle
VitaminsVitamins
Accel Health and Wellness Formula is a vitamin and mineral supplement for horses. It contains both organic and inorganic trace minerals.
Accel Lifetime (Vita Flex)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Accel Lifetime is a vitamin and mineral supplement providing 18% crude protein. It contains a mix of organic and inorganic trace minerals.
Accelerate (Right Choice)
Coat QualityCoat Quality
FatFat
NutritionNutrition
Weight IssuesWeight Issues
Accelerate is a textured complete feed with 12% protein and 8% fat. It is formulated for performance horses with added yeast and a combination of organic and inorganic minerals.
Accelerate GH (Right Choice)
FatFat
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
Accelerate GH is a pelleted complete feed with 12% protein, 8% fat, and 24% NSC. It contains organic minerals as well as pre and probiotics for digestive support.
Achiever Foal Non-GMO (Daily Dose Equine)
BroodmareBroodmare
FoalFoal
GrainsGrains
Ration BalancerRation Balancer
Achiever Foal Non-GMO by Daily Dose Equine is a premixed forage balancer intended for broodmares in their last 2 months of pregnancy and for foals up to age 3. It contains minerals, vitamins, amino acids, and probiotics.
Achiever Non-GMO (Daily Dose Equine)
GrainsGrains
Gut HealthGut Health
Ration BalancerRation Balancer
VitaminsVitamins
Achiever Non-GMO by Daily Dose Equine is a textured feed that is intended to be fed as a forage ration balancer. It contains vitamins, minerals, amino acids, and probiotics meant for proper nutrient absorption.
Achiever-Lite (Daily Dose Equine)
GrainsGrains
Gut HealthGut Health
NutritionNutrition
Ration BalancerRation Balancer
Achiever-Lite by Daily Dose Equine is a textured feed that is intended to be fed as a forage ration balancer for easy keepers. It contains vitamins, minerals, amino acids, and probiotics for proper nutrient absorption.
Alam (McCauley’s Equine Formulas)
Caloric EnergyCaloric Energy
ExerciseExercise
Grain FreeGrain Free
Weight IssuesWeight Issues
McCauley's Alam is a pelleted feed with reduced levels of sugar and starches (NSC). It is formulated for horses that need to avoid grains, including horses prone to laminitis and horses with respiratory problems.
Alaska Equine Gold (Alaska Garden and Pet Supply)
HealthHealth
NutritionNutrition
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Alaska Equine Gold by Alaska Garden and Pet Supply is a pelleted feed formulated with enhanced vitamin and mineral supplementation to help balance the deficiencies of a forage-based diet.
Alfa Essentials (Tribute)
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
Ration BalancerRation Balancer
VitaminsVitamins
Alfa Essentials is a ration balancer formulated for diets that contain greater than 50% legume forages such as alfalfa. It provides higher phosphorous than calcium to balance elevated levels of calcium.
Alfa Growth (Tribute Equine)
Complete FeedComplete Feed
FatFat
GrowthGrowth
LactationLactation
Tribute Alfa Growth® is a textured feed for growing horses and pregnant or lactating broodmares that are consuming 50% or more legume forages such as alfalfa hay.
Alfa Prime (Running Horse)
EnergyEnergy
ExerciseExercise
Feed EfficiencyFeed Efficiency
PerformancePerformance
Alfa Prime is a complete extruded feed intended for equine athletes with 14% protein and 8% fat. It is formulated with digestible fibre from alfalfa meal and soybean hulls and utilizes vegetable oil, rice bran and flaxseed as fat sources.
Alfa Pro (Hi-Pro Feeds)
FiberFiber
ForageForage
HealthHealth
NutrientsNutrients
Alfa Pro by Hi-Pro Feeds is a fortified, ground alfalfa cube designed for optimal equine nutrition. It is formulated to meet the dietary requirements of mature horses.
Alfa-Pro Elite (Hi-Pro Feeds)
ForageForage
Grain FreeGrain Free
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
Alfa-Pro Elite by Hi-Pro Feeds is a fortified, ground alfalfa cube. It is grain-free and low in NSC, making it suitable for horses with metabolic conditions.
AlfaForce Yellow Tag (AlfaForce Equine)
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
PerformancePerformance
ProteinProtein
AlfaForce Yellow Tag by AlfaForce Equine is a pelleted feed designed for all classes of horses. It is formulated with 16% protein, 3% fat and has a maximum non-structural carbohydrate level of 13.9%.
Alfalfa Advantage (ProElite)
Mineral BalanceMineral Balance
NutritionNutrition
Ration BalancerRation Balancer
VitaminsVitamins
ProElite Alfalfa Advantage is a low-feeding rate pelleted ration balancer intended to balance diets composed of alfalfa forages. It can be fed to all classes of horses.
Alfalfa Bermuda Blend Pellets (Ametza)
FiberFiber
ForageForage
Mineral BalanceMineral Balance
VitaminsVitamins
Alfalfa Bermuda Blend Pellets by Ametza is a pelleted feed that is meant to provide energy from sources such as alfalfa and Bermuda hay. It is intended for horses in light to moderate work.
Alfalfa Bermuda Hay Pellets (Ace Hi Feeds)
FiberFiber
ForageForage
Gut HealthGut Health
NutritionNutrition
Alfalfa Bermuda Hay Pellets can be used as a forage replacement for horses. This product also contains added vitamins and minerals. This feed is beneficial for older horses who have difficulty chewing.

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