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Thiamine Hydrochloride (Vitamin B1) - Feed Ingredient

Thiamine hydrochloride is a synthetic, water-soluble form of Vitamin B1 that is commonly used in animal nutrition due to its stability and bioavailability. Thiamine hydrochloride is the hydrochloride salt of thiamine, making it more soluble in water and rapidly absorbed in the digestive tract.

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 Hydrochloride (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.
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.
2x Bio Plus 60 Double Strength Horse Supplement (Pennwoods Equine)
DigestionDigestion
Hoof HealthHoof Health
VitaminsVitamins
YeastYeast
2x Bio Plus 60 Double Strength Horse Supplement is a powdered hoof supplement that contains 15 mg of biotin per serving. It includes vitamins, minerals, and yeast that intends to improve absorption.
Alfalfa Support (Pureform)
AntioxidantAntioxidant
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
Pureform Alfalfa Support is a vitamin/mineral supplement designed for horses on diets containing high levels of alfalfa hay. It is suitable for all life stages and includes ingredients for joint health, such as glucosamine and MSM.
Arizona Copper Complete (Horse Tech)
HealthHealth
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
VitaminsVitamins
Arizona Copper Complete is a vitamin and mineral supplement for horses containing copper and other trace minerals in an organic amino acid complex. The supplement also provides vitamins and amino acids in a milled flax base.
Biotin Complete (Peak Performance Nutrients)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Biotin Complete by Peak Performance Nutrients is meant to support hoof health for horses that suffer from dry hooves or cracked walls. This supplement contains 20mg of Biotin per serving.
Blitz! Pak (Peak Performance Nutrients)
ElectrolyteElectrolyte
HerbHerb
Mineral BalanceMineral Balance
VitaminsVitamins
Blitz! Pak by Peak Performance Nutrients is a vitamin and mineral supplement which is intended to be provided before a horse event. It contains electrolytes, amino acids, and a blend of herbs.
Blitz! Paste Comfort Blend (Peak Performance Nutrients)
ExerciseExercise
HerbHerb
RecoveryRecovery
StaminaStamina
Blitz! Paste Comfort Blend by Peak Performance Nutrients is a vitamin and mineral supplement intended to be provided before a horse event. It contains electrolytes and amino acids intended to aid performance and recovery.
Blitz! Paste Original Formula (Peak Performance Nutrients)
ElectrolyteElectrolyte
PerformancePerformance
RecoveryRecovery
StaminaStamina
Blitz! Paste Original Formula is a vitamin and mineral supplement meant to be provided before a horse event. It contains electrolytes, amino acids, and a blend of herbs intended to aid performance during the event and recovery.
Blue Label 2X (Pennwoods)
HealthHealth
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Blue Label 2X by Pennwoods is a complete vitamin and mineral supplement designed for horses that contains added amino acids and yeast.
BOS Equus (The Horse Food)
Grain FreeGrain Free
NutrientsNutrients
Omega 3-6-9Omega 3-6-9
ProteinProtein
BOS Equus by The Horse Food is a seed-meal-based feed high in protein and fat. It is intended for any type of horse for any age.
Breeders Choice Plus (DAC)
BroodmareBroodmare
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Breeders Choice Plus by DAC is a powdered vitamin and mineral supplement designed for breeding horses. It contains trace minerals, selenium, and probiotics.
Calming PRO Paste (Horse Logic Pro)
CalmingCalming
Competition HorsesCompetition Horses
HealthHealth
ImmunityImmunity
Calming PRO Paste from Horse Logic Pro is a calming paste for horses. Calming Pro Paste contains L-tryptophan which is intended to decrease anxiety in horses during stressful situations.
Carboraider Complete (King Brand)
Complete FeedComplete Feed
HealthHealth
Low NSC FeedsLow NSC Feeds
NutritionNutrition
Carboraider Complete from King is a pelleted complete feed for horses. Carboraider Complete is intended for adult horses who require lower sugar and starch levels in their diets. This feed is formulated with beet pulp and a rice bran base.
Carboraider Senior (King)
Complete FeedComplete Feed
DigestionDigestion
FiberFiber
SeniorSenior
Carboraider Senior by King is a complete feed intended for senior horses requiring controlled levels of starch and sugar.
CFS Elevate ABF (Clarence Farm Services Limited)
Easy KeeperEasy Keeper
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
CFS Elevate ABF is a ration balancer that provides vitamins and minerals without significantly increasing calories in the diet. It is formulated with 12% protein and 4% fat, and can be fed alone or in combination with other feeds.
Clovite Conditioner (Clovite)
ImmunityImmunity
NutritionNutrition
Ration BalancerRation Balancer
VitaminsVitamins
Clovite is a vitamin supplement manufactured by Zoetis that provides vitamin A, D and B12.
Complete Supplement Pellets (Ritchie Smith – Harmony)
HealthHealth
NutrientsNutrients
NutritionNutrition
Ration BalancerRation Balancer
Complete Supplement Pellets from Ritchie Smith's Harmony is a vitamin, mineral, hoof, and gut supplement. Complete Supplement Pellets are intended for horses on forage-based diets, or horses with metabolic issues.
Cut’n Slide (Running Horse Elite Equine Nutrition)-[Discontinued]
EnergyEnergy
ExerciseExercise
PerformancePerformance
Ration BalancerRation Balancer
This feed has been renamed and repackaged to Prime Running Horse Feeds. Running Horse Cut n’ Slide was a nutritional supplement containing vegetable fat, soluble fibers, vitamins, and minerals. It was targeted at performance horses with higher caloric needs.
DAC Colt Grower (DAC)
Amino AcidAmino Acid
FoalFoal
GrowthGrowth
YeastYeast
Colt Grower by DAC provides vitamins and minerals for young horses. A proper vitamin and mineral balance is essential for development, as well as hoof and coat quality.
DailyWerks HD (HorseTech)
Hoof HealthHoof Health
JointsJoints
PerformancePerformance
Ration BalancerRation Balancer
DailyWerks HD by HorseTech is a powdered ration balancer intended to support hoof and joint health in horses in heavy work.
DailyWerks LD (HorseTech)
HealthHealth
Hoof HealthHoof Health
JointsJoints
Ration BalancerRation Balancer
DailyWerks LD by HorseTech is a daily ration balancer intended to provide hoof and joint support.
Direct Action Supplement (DAC)
Amino AcidAmino Acid
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Direct Action is a multivitamin and trace mineral concentrate for horses. This low feeding rate supplement is formulated to provide added vitamins, minerals, and amino acids required in the equine diet.
Durvite (Durvet)
Coat QualityCoat Quality
HealthHealth
NutritionNutrition
Skin + HairSkin + Hair
Durvite by Durvet is a flaxseed meal based supplement intended for use in livestock, horses and pets to improve overall condition and appearance.
Eberglo Liquid (Nature’s Way)
HealthHealth
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Eberglo by Nature's Wave is a liquid vitamin and mineral supplement for mature horses. It contains water-soluble and fat-soluble vitamins as well as inorganic trace minerals.
Equi-Cell (Select The Best)
Blood CellsBlood Cells
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Equi-Cell by Select The Best is a liquid supplement that contains iron, copper, B–vitamins, antioxidants, and selenium. It is intended for performance horses to support energy and metabolism.
Equicell-R – Liquid Flavoured Vitamin-Mineral Supplement
DentalDental
HealthHealth
Ration BalancerRation Balancer
VitaminsVitamins
Pharm-Vet Equicell-R is a liquid mineral and vitamin supplement for horses. It contains added iron and is designed to provide nutrients that may be lacking in the equine diet.
Ex Stress Elite (Peak Performance Nutrients)
CalmingCalming
Competition HorsesCompetition Horses
PerformancePerformance
StressStress
Ex Stress Elite by Peak Performance Nutrients is a supplement containing magnesium, B vitamins, and electrolytes. It is meant to help horses replace the nutrients they lose when in stressful situations.
Ex Stress Paste (Peak Performance Nutrients)
CalmingCalming
Competition HorsesCompetition Horses
PerformancePerformance
StressStress
Ex Stress Paste by Peak Performance Nutrients is a supplement containing magnesium and B vitamins. It is intended to help horses replace the nutrients they lose when in stressful situations such as competitions and trailering.
Ex Stress Powder (Peak Performance Nutrients)
CalmingCalming
Competition HorsesCompetition Horses
PerformancePerformance
StressStress
Ex Stress Powder by Peak Performance Nutrients is a supplement containing magnesium and B vitamins. It is meant to help horses replace the nutrients they lose when in stressful situations such as competitions and trailering.
Foal Milk Bits (Hoffman’s Horse Products)
FiberFiber
FoalFoal
HealthHealth
NutritionNutrition
Foal Milk Bits from Hoffman's Horse Products is a pelleted feed for foals. Foal Milk Bits is intended to supplement mare's milk. Foal Milk Bits may provide extra nutrition to foals who require additional calories.
Foal Milk Replacer (Hoffman’s Horse Products)
FatFat
FoalFoal
HealthHealth
NutritionNutrition
Foal Milk Replacer from Hoffman's is intended to replace or supplement a mare's milk. This milk replacer is highly palatable and intended to meet growing foals requirements.
Full Support Mini (Pureform)
DigestionDigestion
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
Pureform Full Support Mini is a vitamin/mineral supplement intended for miniature horse breeds. It contains ingredients to support joint health, B-vitamins, as well as organic and inorganic minerals.
Glänzen 3 (HorseTech)
CalmingCalming
Coat QualityCoat Quality
Hoof HealthHoof Health
NutrientsNutrients
Glänzen 3 is a hoof and coat supplement that provides 30 mg of biotin per 6 ounce serving. It also supplies methionine, lysine, zinc and copper in a flax meal base for hoof support.
Glo-N-Go (Formula 707)
DigestionDigestion
FatFat
FlavorFlavor
Weight IssuesWeight Issues
Glo-N-Go by Formula 707 is fat supplement intended to help horses that have trouble maintaining a healthy weight.
GoMax (Farman)
MetabolismMetabolism
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
GoMax from Farnam is a liquid vitamin and mineral supplement fortified with iron. It contains yucca, cherry flavourings and cane molasses.
Hemogen Solution (Manna Pro)
Blood CellsBlood Cells
EnergyEnergy
StaminaStamina
VitaminsVitamins
Hemogen Solution by Manna Pro is an iron supplement with other minerals and B vitamins. Hemogen Solution from Manna Pro is intended to improve energy and stamina.
High Point Pellets (HorseTech)
Gut HealthGut Health
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
High Point Pellets by HorseTech is a pelleted vitamin and mineral supplement formulated to balance forage-based diets and support overall health. It also contains added prebiotics to promote optimal digestive function.
High Point-Alfalfa Hay (HorseTech)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
High Point- Alfalfa from HorseTech is a vitamin and mineral supplement which is designed to be fed in alfalfa-based diets. The 3-ounce feeding rate provides phosphorus and essential vitamins as well as trace minerals.
High Point-Grass/Mixed Hay (HorseTech)
HealthHealth
ProbioticProbiotic
Ration BalancerRation Balancer
VitaminsVitamins
High Point-Grass/Mixed Hay is a vitamin-mineral supplement formulated for horses consuming grass or mixed hay diets. This supplement provides a higher calcium-phosphorous ratio.
Hydra Guard Electrolytes (Pegasus)
Competition HorsesCompetition Horses
ExerciseExercise
HydrationHydration
PerformancePerformance
Hydra Guard Electrolytes from Pegasus is intended for all horses and ponies but specifically those in heavy work. This supplement is intended to assist in rehydration.
LMF California Complete (LMF Horse Feeds)
Complete FeedComplete Feed
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
LMF California Complete is a pelleted feed formulated as an alternative to diets containing pure alfalfa hay. It contains highly digestible fibre from beet pulp, alfalfa hay and soyhulls.
LMF Pro-Pellet (LMF Horse Feeds)
Complete FeedComplete Feed
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
LMF Pro-Pellet is a textured high-fiber feed for performance horses in moderate to heavy work. It contains 12% crude protein, and 3.3% fat, along with bio-available trace minerals, organic selenium, live yeast culture, and glucosamine.
LMF Senior Low Carb (LMF Horse Feeds)
Complete FeedComplete Feed
Grain FreeGrain Free
JointsJoints
SeniorSenior
LMF Senior Low Carb feed is a soybean- and alfalfa-based feed for mature horses. It contains 13% crude protein, 8% fat, and 8% NSC.
Lone Star Trace MS-051120 (HorseTech)
Mineral BalanceMineral Balance
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Lone Star Trace MS-051120 is a custom vitamin and mineral supplement for horses. It contains milled flaxseed, added amino acids and organic trace minerals.
Mare & Foal (Running Horse Elite Equine Nutrition)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Running Horse Elite Mare & Foal is a high-fat feed that contains 16% protein and 9% fat from sources such as wheat middlings, rice bran, and soybean oil. This feed is targeted at pregnant, lactating, and growing horses.
Mare Support (Pureform)
CalmingCalming
MareMare
Mineral BalanceMineral Balance
VitaminsVitamins
Mare Support is a vitamin/mineral supplement formulated for horses on a grass-based diet. It contains glucosamine and MSM for joint health, B-vitamins, organic microminerals and vitex agnus-castus (chasteberry).
Omega Bran (McCauley’s)
FatFat
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Omega Bran by McCauley's is a high fat (27.8%) supplement containing vitamins and minerals, it is intended for all horses.
Orange Superior (DAC)
MetabolismMetabolism
Mineral BalanceMineral Balance
ProbioticProbiotic
VitaminsVitamins
Orange Superior is a vitamin and mineral supplement that can be given to any mature horse, and is meant to support metabolic functions, energy balance, and also provides probiotics.
Pennwoods 13 to 36 Advanced (Pennwoods Equine)
FatFat
FoalFoal
GrowthGrowth
ProteinProtein
Pennwods 13 to 36 Advanced is a growth and performance supplement targeted to yearling and two-year-old horses. It contains a blend of proteins, fats, vitamins, and minerals.
PreOx (HorseTech)
AntioxidantAntioxidant
HealthHealth
ImmunityImmunity
VitaminsVitamins
PreOx from HorseTech is a powdered antioxidant supplement. PreOx contains added vitamins, minerals and added flaxseed. This supplement is intended for horses who require additional antioxidants in their diet.
Pro V.M. with EFAs (Peak Performance Nutrients)
AntioxidantAntioxidant
ElectrolyteElectrolyte
JointsJoints
MuscleMuscle
Pro V.M. with EFAs by Peak Performance Nutrients is a vitamin, mineral, amino acid & probiotic supplement designed with race horses in mind. It intends to support the extreme demands on the horse’s joints, immune system and digestive system.

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