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Thiamine (Vitamin B1) - Feed Ingredient

Thiamine, also known as Vitamin B1, is a water-soluble vitamin essential for carbohydrate metabolism, nervous system function, and energy production in horses. It plays a critical role in the conversion of glucose into ATP, the primary energy source for cells, by acting as a coenzyme in the Krebs cycle. Thiamine is also necessary for the proper functioning of the nervous system, as it helps regulate neurotransmitter activity and nerve impulse transmission.

Horses naturally produce some thiamine through microbial fermentation in the hindgut, and additional dietary sources include cereal grains, wheat bran, and brewer’s yeast. Deficiency is rare but can occur due to prolonged antibiotic use, excessive grain consumption, or ingestion of plants containing thiaminase enzymes (such as bracken fern and horsetail), which degrade thiamine. Symptoms of deficiency may include weight loss, muscle tremors, incoordination, and nervous system disturbances. In such cases, thiamine supplementation in the form of thiamine hydrochloride or thiamine mononitrate may be beneficial. As a water-soluble vitamin, excess thiamine is excreted in urine, making toxicity unlikely, though balanced supplementation is advised for optimal health.

The following equine feeds, supplements and products contain Thiamine (Vitamin B1) 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.
B-Vitamin Pak (Mad Barn)
CalmingCalming
ExerciseExercise
StressStress
VitaminsVitamins
B-Vitamin Pak is a comprehensive B-vitamin supplement in powder form. It provides a balanced profile of the B-Complex vitamins and may be beneficial for horses during times of heavy work, stress, or illness.
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.
Inspire Min-A-Vite Lite (Blue Seal)
HealthHealth
Organic Trace MineralsOrganic Trace Minerals
Ration BalancerRation Balancer
VitaminsVitamins
Inspire Min-A-Vite Lite by Blue Seal is a pelleted mineral and vitamin supplement formulated to balance grass and legume hay or pasture. It is intended for horses of all ages, weights, and activity levels.
Inspire Pacer (Blue Seal)
ExerciseExercise
FatFat
GrainsGrains
PerformancePerformance
Inspire Pacer is a textured feed intended for adult horses at different activity levels. This grain-based feed provides a blend of oats, corn, and barley mixed with vegetable oil and molasses to increase energy density.
Inspire PEAK Growth (Blue Seal)
FoalFoal
GrowthGrowth
LactationLactation
ProteinProtein
Inspire PEAK Growth from Blue Seal is a low NSC feed for lactating mares and young growing foals. It contains amino acids, vitamins and minerals, and antioxidants.
Inspire PEAK Mare & Foal (Blue Seal)
GrowthGrowth
LactationLactation
NutrientsNutrients
ProteinProtein
Inspire PEAK Mare & Foal from Blue Seal is a feed for growing foals and lactating mares. It is high in protein and contains vitamins, yeast, minerals, and antioxidants.
Inspire PEAK Performance 12 Textured (Blue Seal)
Amino AcidAmino Acid
AntioxidantAntioxidant
EnergyEnergy
PerformancePerformance
Inspire PEAK Performance 12 Textured from Blue Seal is a feed intended for performance or breeding horses. It contains amino acids, antioxidants, vitamins, and a blend of energy sources.
Inspire PEAK Performance 14 Pellet (Blue Seal)
BroodmareBroodmare
GrowthGrowth
LactationLactation
PerformancePerformance
Inspire PEAK Performance 14 Pellet by Blue Seal is a pelleted feed intended for growing, breeding, lactating and performance horses.
Inspire PEAK Performance 14 Textured (Blue Seal)
AntioxidantAntioxidant
EnergyEnergy
PerformancePerformance
ProteinProtein
Inspire PEAK Performance 14 Textured from Blue Seal is a feed intended for growing horses, performance horses, stallions, or breeding mares. It contains minerals, vitamins, yeast, amino acids and antioxidants.
Inspire PEAK Performance Amp (Blue Seal)
Amino AcidAmino Acid
EnergyEnergy
PerformancePerformance
VitaminsVitamins
Inspire PEAK Performance Amp from Blue Seal is a pelleted feed intended for performance horses. It is meant to provide high energy and contains amino acids, fat, vitamins and minerals.
Inspire PEAK Racer (Blue Seal)
Caloric EnergyCaloric Energy
GrainsGrains
PerformancePerformance
RespiratoryRespiratory
Inspire PEAK Racer from Blue Seal is a grain ration for performance horses such as racehorses. It is nutrient and calorie dense that has low dust and fiber, intended for horses with respiratory issues.
Inspire PEAK Secure (Blue Seal)
DigestionDigestion
HealthHealth
Low NSC FeedsLow NSC Feeds
PerformancePerformance
Inspire PEAK Secure from Blue Seal is a low NSC feed that is intended for maintenance and performance horses. It contains vitamins, minerals, yeast, fiber and protein.
Inspire PEAK Versatility (Blue Seal)
Caloric EnergyCaloric Energy
LactationLactation
NutrientsNutrients
StallionStallion
Inspire PEAK Versatility from Blue Seal is a feed intended for growing horses, performance horses, breeding stallions, and lactating mares. It contains energy through carbs, fat and fiber.
Inspire Pride (Blue Seal) [Discontinued]
Complete FeedComplete Feed
FiberFiber
Gut HealthGut Health
NutrientsNutrients
Inspire Pride by Blue Seal is a complete feed that is intended for maintaining mature horses. It is in cube form and high in fiber and is meant to help with gut health.
Inspire Rider (Blue Seal)
ExerciseExercise
FlavorFlavor
GrainsGrains
PerformancePerformance
Inspire Rider is a complete textured feed intended for maintenance to lightly exercised adult horses. It is composed of grains coated in molasses to encourage palatability.
Inspire Senior (Blue Seal)
Complete FeedComplete Feed
FatFat
FiberFiber
SeniorSenior
Inspire Senior from Blue Seal is a complete feed intended for senior horses in performance or maintenance. It is high in fiber and fat, meant to support digestion and body condition.
Inspire Sport (Blue Seal)
EnergyEnergy
FatFat
PerformancePerformance
StaminaStamina
Blue Seal Inspire Sport is a pelleted grain ration intended for mature performance horses. Energy sources include wheat middlings, ground corn, wheat flour, cane molasses, and vegetable oil.
Inspire Strider (Blue Seal)
ExerciseExercise
GrainsGrains
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Blue Seal Inspire Strider is a pelleted grain-based feed intended for mature horses at maintenance or in light work. It is designed to provide lower protein and fat levels for horses that require reduced caloric energy or easy keepers.
Inspire Trotter (Blue Seal)
Complete FeedComplete Feed
DigestionDigestion
ExerciseExercise
FiberFiber
Inspire Trotter is a pelleted feed from Blue Seal, intended to supplement the diet of horses with limited access to forage (hay or pasture). It is formulated with wheat middlings, alfalfa meal and soybean hulls, and contains 14% protein.
Integrity Adult/Senior (Integrity Horse Feeds)
Complete FeedComplete Feed
ExerciseExercise
Gut HealthGut Health
SeniorSenior
Integrity Adult/Senior is a 5.4% starch textured feed designed for adult and senior horses in light to moderate work. Energy sources include beet pulp, soy hulls, rice bran, cane molasses, grains and canola oil.
Integrity Growth (Integrity Horse Feeds)
Caloric EnergyCaloric Energy
FoalFoal
GrowthGrowth
ProteinProtein
Integrity Growth is a textured feed designed for growing horses between 10-12 months to 3 years of age. It is formulated with 15% protein and 7.8% starch.
Integrity Lite (Integrity Horse Feeds)
FatFat
Low NSC FeedsLow NSC Feeds
ProteinProtein
Ration BalancerRation Balancer
Integrity Lite is a 4.3% starch textured feed intended for minis, pleasure horses, and easy keepers. It is a grain-free feed with a moderate fat content and low-calorie density.
Integrity Mare & Foal (Integrity Horse Feeds)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Integrity Mare & Foal is a pelleted feed designed for late-gestation mares, lactating mares and nursing, creep, and weanling foals. It has a 16.2% starch content.
Integrity Performance (Integrity Horse Feeds)
EnergyEnergy
ExerciseExercise
MuscleMuscle
PerformancePerformance
Integrity Performance is a high-calorie textured feed designed for adult horses in moderate to heavy work. It provides 10% fat and 8.7% starch.
Integrity with Timothy (Integrity Horse Feeds)
Omega 3-6-9Omega 3-6-9
ProteinProtein
Ration BalancerRation Balancer
YeastYeast
Integrity with Timothy is a pelleted feed containing wheat bran, soybean hulls, rice bran and timothy hay. It is intended for horses over 3 years of age and provides moderate calorie density.
Intensify Ex-Factor Low Starch (Bluebonnet Feeds)
Complete FeedComplete Feed
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
VitaminsVitamins
Intensify Ex-Factor Low Starch by Buebonnet Feeds is an extruded feed intended for horses at all life stages and exercise levels. It contains10% NSC and organic minerals and yeast. Extruded feeds tend to have higher digestibility.
Intensify Growth & Development (Bluebonnet Feeds)
BroodmareBroodmare
GrowthGrowth
LactationLactation
ProteinProtein
Intensify Growth & Development by Bluebonnet Feeds is a pelleted feed intended for broodmares and growing horses. This feed provides 16% protein, 10% fat, and 18% NSC.
Intensify Omega Force (Bluebonnet Feeds)
Caloric EnergyCaloric Energy
FatFat
Omega 3-6-9Omega 3-6-9
ProteinProtein
Intensify OmegaForce by Bluebonnet Feeds is a pelleted complete feed with flax seed and fish oil for added omega-3s. Intensify OmegaForce is intended for horses at all lifestages.
Intensify Pelleted (Bluebonnet Feeds)
Complete FeedComplete Feed
Gut HealthGut Health
Mineral BalanceMineral Balance
VitaminsVitamins
Intensify Pellet from Bluebonnet is a feed intended for horses at all life stages. It contains 14% protein, 8% fat, and 15% fibre, and uses a mix of organic and inorganic trace minerals.
Intensify Senior Therapy (Bluebonnet Feeds)
Gut HealthGut Health
Mineral BalanceMineral Balance
SeniorSenior
VitaminsVitamins
Intensify Senior Therapy from Bluebonnet Feeds is a textured feed intended for senior horses. This feed contains alfalfa meal, rice hulls, soybean meal, cane molasses, beet pulp, and a mix of organic and inorganic trace minerals.
Intensify Total Advantage (Bluebonnet Feeds)
FiberFiber
Gut HealthGut Health
Mineral BalanceMineral Balance
VitaminsVitamins
Intensify Total Advantage from Bluebonnet Feeds is a pelleted complete feed intended for horses at any life stage. This 11% NSC feed contains alfalfa meal, rice bran, soybean oil, and beet pulp.
IR Support (Earth Song Ranch)
DigestionDigestion
Gut HealthGut Health
HealthHealth
NutrientsNutrients
IR Support by Earth Song Ranch is a custom blend supplement intended to support horses on grass or mixed hay diets.
Iron Power (Finish Line Horse Products)
Blood CellsBlood Cells
CirculationCirculation
Mineral BalanceMineral Balance
VitaminsVitamins
Iron Power® is a liquid mineral and vitamin supplement used to supply iron and prevent equine anemia. Iron Power® provides 250 mg of iron per 1 oz serving along with other vitamins and minerals.
ISF Thiamine (ISF)
ExerciseExercise
HealthHealth
IngredientIngredient
NutrientsNutrients
ISF Thiamine from ISF is an equine supplement intended for exercising horses. ISF Thiamine is intended for horses who require help maintaining a normal appetite.
Jump Start (Doctor’s Choice Supplements)
BroodmareBroodmare
FoalFoal
GrowthGrowth
Ration BalancerRation Balancer
Jump Start is an organic ration balancer formulated for breeding stock, growing horses, and mature horses. It is also designed for performance horses or horses in heavy work.
Jump-Start Plus (Manna Pro)
Gut HealthGut Health
ImmunityImmunity
ProbioticProbiotic
StressStress
Jump-Start Plus is a digestive paste that supplies probiotics, sodium bicarbonate, vitamins, and minerals. It is intended to be used during times of stress such as transportation, illness, or competition.
Junior Horse (Ace Hi Feeds)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
NutritionNutrition
Junior Horse by Ace Hi Feeds is a supplemental feed intended for weanlings, yearlings and two-year olds. It contains 15.5% protein, vitamins, and a blend of organic and inorganic minerals.
Junior Horse (Kelley’s Feed)
FoalFoal
GrowthGrowth
NutritionNutrition
ProteinProtein
Junior Horse by Kelley's Feed is an alfalfa-based textured feed intended for weanlings, yearlings, and two-year-old's. It is intended to be fed alongside a quality forage as a supplement.
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.
KelatoVIT Performance Pellet (Kelato)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
KelatoVIT Performance Pellet from Kelato is a vitamin and mineral pelleted supplement that also can be found in powdered form. Vitamins and minerals assist in performance, recovery, and overall health.
KelatoVIT Performance Powder (Kelato)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
KelatoVIT Performance Powder from Kelato is a vitamin and mineral supplement that also can be found in pelleted form. Vitamins and minerals assist in performance, recovery, and overall health.

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