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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
Bonanza Tuff Horse (Mid-America Feeds)
EnergyEnergy
NutrientsNutrients
NutritionNutrition
VitaminsVitamins
Bonanza Tuff Horse by Mid-America Feeds is a pelleted complete feed intended for all types of horses.
Bone + Joint (Bluebonnet Feeds)
AntioxidantAntioxidant
Bone HealthBone Health
GrowthGrowth
JointsJoints
Bone + Joint by Bluebonnet Feeds is a supplement intended to support tendon, bone, cartilage, and joint health in growing, performance and senior horses.
Boost ‘Em (Bluebonnet Feeds)
HealthHealth
NutrientsNutrients
Ration BalancerRation Balancer
VitaminsVitamins
Boost 'Em is a pelleted diet balancer from Bluebonnet Feeds that contains protein, fat, vitamins and minerals to contribute to the general health of horses and livestock.
Boredom Buster (Equi-lete)
Mineral BalanceMineral Balance
NutrientsNutrients
NutritionNutrition
VitaminsVitamins
Boredom Buster by Equi-lete is a hanging treat containing vitamins and minerals. It is intended for stalled horses experiencing boredom.
Breeder Tub (Agassiz Feeds)
BroodmareBroodmare
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Breeder Tub by Agassiz Feeds is a mineral and vitamin lick designed for breeding beef cattle. It is molasses-based with no added salt and designed for free-choice use.
Breeding (Banks Mill Feeds)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Breeding by Banks Mill Feeds is a high-protein textured feed intended for gestating and lactating broodmares, as well as growing foals. This feed contains 26.3% NSC.
Breeding and Growth Formula (Bartlett Milling) [Discontinued]
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Bartlett's Breeding and Growth Formula is a 14% protein and 6% fat sweet feed formulated for breeding, growing and exercising horses. It contains ingredients such as oats, barley, corn, and wheat middlings as its main energy sources.
Broodmare Yearling (Equine Advantage)
BroodmareBroodmare
GrainsGrains
PerformancePerformance
StallionStallion
Broodmare Yearling is formulated to help promote healthy growth and development in horses and ponies. This feed is ideal for broodmares, lactating mares, and breeding stallions to provide essential nutrients.
CADENCE Textured Feed (BUCKEYE Nutrition)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
Competition HorsesCompetition Horses
ToplineTopline
CADENCE™ Textured Feed is a palatable, calorie-dense feed formulated to meet the energy requirements of performance horses. It provides 10% fat with 25% NSC.
CADENCE™ Ultra Sweet Pelleted Feed (BUCKEYE Nutrition)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
DigestionDigestion
FlavorFlavor
CADENCE™ Ultra Sweet Pelleted Feed is a 14% fat and 14% fibre feed designed to provide high-calorie density. It is a sweet feed that contains 22% NSC with added cane molasses.
Calf-Manna Performance Supplement (Manna Pro)
Caloric EnergyCaloric Energy
FatFat
Gut HealthGut Health
ProteinProtein
Calf-Manna® Horses Performance Supplement is a high-protein feed intended for recently weaned foals that are having trouble transitioning to solid feeds. It provides added energy and nutrients.
Camelina Meal (Lozana Health)
Coat QualityCoat Quality
DigestionDigestion
Hoof HealthHoof Health
RecoveryRecovery
Camelina Meal by Lozana Health is a protein supplement intended to support overall health in all classes of horses.
Carb-Buster Non-GMO (Daily Dose Equine)
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
Ration BalancerRation Balancer
VitaminsVitamins
Carb-Buster Non-GMO by Daily Dose Equine is a premixed 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.
Carb-Guard – 12% Pelleted Horse Feed (Blue Seal)
Complete FeedComplete Feed
FiberFiber
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
Blue Seal Carb-Guard is a 12% protein and 8% fat pelleted complete feed with less than 11% NSC. It is formulated with various roughages for fibre as well as wheat middlings, corn germ, and dried distillers grains for energy.
CarbCare Performance (Legends)
Complete FeedComplete Feed
EnergyEnergy
FatFat
PerformancePerformance
Legends CarbCare Performance is a pelleted feed for adult performance horses engaging in moderate exercise. It provides 10% fat to meet energy requirements and support endurance.
CarbCare Show & Pleasure (Legends)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
ExerciseExercise
PerformancePerformance
Legends CarbCare Show & Pleasure is a pelleted feed for adult horses in light to moderate activity. It lists a maximum NSC of 20%, based on 15% starch and 5% sugar content.
Carbolyte (Excel Equine Feeds)
HealthHealth
IngredientIngredient
NutrientsNutrients
NutritionNutrition
Carbolyte from Excel Equine Feeds is a pelleted feed. This feed is intended for horses who require a reduced starch diet.
CJ (Platinum Performance)
ExerciseExercise
JointsJoints
Omega 3-6-9Omega 3-6-9
RecoveryRecovery
CJ by Platinum Performance is an equine joint supplement for performance and senior horses. Active ingredients include avocado-soy unsaponifiables (ASU), MSM, glucosamine, hyaluronic acid, and Boswellia serrata extract.
Classic (CFC Farm Home Center)
FiberFiber
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
VitaminsVitamins
Classic from CFC Farm Home Center is a pelleted horse feed that is meant for light working horses. It contains fiber, minerals and vitamins. It also has low sugar levels.
Classic 12 Plus (Manna Pro) [Discontinued]
BroodmareBroodmare
Complete FeedComplete Feed
NutritionNutrition
PerformancePerformance
Classic 12 Plus from Manna Pro is a pelleted feed designed for performance horses, stallions, and broodmares. Classic 12 Plus provides 12% crude protein, 6% crude fat, 8% crude fibre, and uses a mix of organic and inorganic trace minerals.
Classic Finish (Quality Feeds)
BroodmareBroodmare
EnergyEnergy
PerformancePerformance
StallionStallion
Classic Finish by Quality Feeds is a textured sweet feed containing beet pulp, it is intended for breeding and performance horses.
Colostrum Supplement (Manna Pro)
FoalFoal
GrowthGrowth
Gut HealthGut Health
ProteinProtein
Colostrum Supplement by Manna Pro is a colostrum additive designed to be fed to newborn calves, kids, lambs, foals, piglets, llama, alpacas, puppies and kittens. It is milk protein-based and fortified with added vitamins and minerals.
Combined 4-Way (Equerry’s)
DigestionDigestion
JointsJoints
Skin + HairSkin + Hair
VitaminsVitamins
Combined 4-Way by Equerry's is a powdered supplement that intends to support digestive, hoof, coat and joint health in senior or performance horses.
Competition Plus (Brooks)
Competition HorsesCompetition Horses
EnergyEnergy
GrainsGrains
PerformancePerformance
Competition Plus by Brooks is a corn-free textured feed intended for performance horses. It provides high energy levels from energy sources such as beet pulp and added fat from soy oil.
Complement Advantage (Excel Equine Feeds)
FiberFiber
HealthHealth
NutrientsNutrients
NutritionNutrition
Complement Advantage by Excel Equine Feeds is a textured feed intended for hard keepers or horses in heavy training.
Complement Control (Excel Equine Feeds)
EnergyEnergy
HealthHealth
NutritionNutrition
PerformancePerformance
Complement Control by Excel Equine Feeds is a pelleted feed intended to provide nutrition with a low feeding rate for growing, performance, breeding and maintenance horses.
Complement Foundation (Excel Equine Feeds)
HealthHealth
ImmunityImmunity
NutrientsNutrients
NutritionNutrition
Complement Foundation by Excel Equine Feeds is a beet pulp based textured feed intended for all horse types.
Complete (Triple Crown)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
NutritionNutrition
PerformancePerformance
Triple Crown Complete is a high-fibre feed with beet pulp and added vitamins and minerals designed for performance horses. This feed provides 12% protein and 12% fat in a textured format.
Complete (Woody’s Feed)
Complete FeedComplete Feed
FatFat
FiberFiber
ProteinProtein
Woody's Complete is a grain-free, pelleted horse feed formulated to meet the needs of most adult horses. Energy sources include beet pulp, soybean hulls, alfalfa meal, rice bran, flaxseed, and vegetable oil.
Complete 12% Horse Feed (Agrimaster)
Complete FeedComplete Feed
GrainsGrains
NutritionNutrition
PerformancePerformance
Complete 12% Horse Feed by Agrimaster is a pelleted feed with an elevated level of fibre, ideal for overweight horses and easy keepers. It contains grain products, plant protein products, and processed grain by-products.
Complete Horse 12 (Manna Pro)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
GrainsGrains
NutritionNutrition
Complete Horse 12 from Manna Pro is a pelleted feed for mature horses at maintenance or in light work. This feed is meant to be fed alongside hay and/or pasture. It contains 12% crude protein, 2% crude fat, and 24% crude fibre.
Complete Horse Pellet (Ace Hi Feeds)
Complete FeedComplete Feed
FiberFiber
Mineral BalanceMineral Balance
NutritionNutrition
Complete Horse Pellet by Ace Hi Feeds is an alfalfa-based complete feed intended for adult horses. It contains added vitamins and a blend of organic and inorganic minerals. This high fiber feed is intended for mature horses
Complete Horse Pellets w/ Roughage (Bartlett Milling) [Discontinued]
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
VitaminsVitamins
Bartlett Complete Horse Pellets with Roughage is a 12% protein and 2.5% fat feed formulated for pleasure horses. Calories are provided from wheat middlings, alfalfa meal, soybean hulls, and ground corn.
Complex 40 (Technavet)
HealthHealth
ImmunityImmunity
Mineral BalanceMineral Balance
VitaminsVitamins
Complex 40 is a vitamin and mineral supplement for horses. Complex 40 contains trace minerals and is intended to support immune response, collagen production and joint health.
Cool & Safe (Thomas Moore Feed)
Complete FeedComplete Feed
EnergyEnergy
ExerciseExercise
NutrientsNutrients
Cool & Safe is a complete feed from Thomas Moore Feed. It is low in starch and sugars and contains minerals, vitamins, and postbiotics. It is intended to provide energy through fat and fiber for training or exercising horses.
Cool Carb (Banks Mill Feeds)
FiberFiber
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Banks Cool Carb is a low sugar and starch feed with 10.5% NSC, intended for horses with gut issues and insulin resistance. This feed contains soybean hulls, wheat middlings, alfalfa meal and beet pulp.
Cool Command Balancer 30 (Hubbard Feeds)
Mineral BalanceMineral Balance
PrebioticPrebiotic
ProteinProtein
VitaminsVitamins
Cool Command Balancer 30 by Hubbard is a ration balancer that is meant to supply vitamins and organic minerals. It provides energy from plant proteins and grain products.
Cool Command Controlled Starch (Hubbard Feeds)
Gut HealthGut Health
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
VitaminsVitamins
Cool Command Controlled Starch by Hubbard is a low-starch concentrate feed with energy primarily provided by fiber and fat. It contains 14% protein and 7% fat. This feed is meant to support skin, hair, and hoof condition.
Cool Command Senior Horse (Hubbard Feeds)
Coat QualityCoat Quality
DigestionDigestion
JointsJoints
SeniorSenior
Cool Command Senior Horse by Hubbard is a higher fat complete feed intended for senior horses with dental issues or joint health concerns. It contains 14% protein and 8% fat, with added MSM, chondroitin sulfate and glucosamine.
Cool Mix (Havens Horsefeed)
BroodmareBroodmare
CalmingCalming
Caloric EnergyCaloric Energy
StallionStallion
Cool Mix by Havens Horsefeed is an alfalfa-based muesli feed with slow-releasing energy content for nervous horses. It contains several grains, soybean hulls, and added vitamins and minerals.
Cool Performance (Quality Feeds)
EnergyEnergy
HealthHealth
NutrientsNutrients
NutritionNutrition
Cool Performance by Quality Feeds is a complete feed intended to support the energy needs of all horse types.
Cool Stride (Banks Mill Feeds)
Easy KeeperEasy Keeper
FiberFiber
NutrientsNutrients
ProteinProtein
Cool Stride is a low NSC (12.4%) textured horse feed intended for easy keepers and boarding facilities. It contains added calcium meant to buffer stomach acid and added chromium meant to support metabolic health.
Country Feeds Adult 12 Textured (Nutrena) [Discontinued]
DigestionDigestion
Hoof HealthHoof Health
MuscleMuscle
NutritionNutrition
Country Feeds Adult 12 Textured is a textured complete feed formulated for all activity levels of mature horses. It provides 12% protein, 6% fat, and 24% NSC.
Critical Care Metabolic Support (Natural Horse Vet)
MetabolismMetabolism
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
VitaminsVitamins
Critical Care Metabolic Support by Natural Horse Vet is a powdered supplement intended to support horses with insulin resistance, proper weight management, and thyroid function.
Crystalyx Stable-Lyx (Masterfeeds)
Mineral BalanceMineral Balance
NutrientsNutrients
ProteinProtein
VitaminsVitamins
Crystalyx Stable-Lyx is a free-choice mineral and vitamin supplement in a molasses block format for herd-feeding horses. It is a nutrient dense formula designed for all classes of horses.
Daily 35% (Equis Feed)
Gut HealthGut Health
Mineral BalanceMineral Balance
ProteinProtein
VitaminsVitamins
Daily 35% by Equis Feeds is a pelleted ration balancer containing 35% protein that can be fed alone or in combination with other feeds. This highly fortified concentrate has an average feeding rate of 1-1.5 lbs per day.
Daily Combo (Empire Research)
Competition HorsesCompetition Horses
DigestionDigestion
IngredientIngredient
YeastYeast
Daily Combo from Empire Research is an equine digestion supplement. Daily Combo is formulated with vitamins, minerals, prebiotics, probiotics and yeast. This supplement is intended to support horses' gut function.
Daily Essentials Pellets (Formula 707)
GrowthGrowth
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Daily Essentials Pellets by Formula 707 is an pelleted equine vitamin and mineral supplement intended to support overall health in all classes of horses.
Daily Start Probiotic (Doctor’s Choice Supplements)
Feed EfficiencyFeed Efficiency
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
Daily Start Probiotic by Doctor's Choice Supplements is a pre/probiotic supplement intended to support gut health. It is designed for broodmares and horses that have difficulty keeping weight.
Decade Challenger – Super Bites (Poulin Grain)
Caloric EnergyCaloric Energy
GrainsGrains
MareMare
PerformancePerformance
Decade Challenger - Super Bites by Poulin Grain is a large-format pelleted feed intended for performance horses and broodmares. It provides 14% protein, 8% fat, and 10% fiber.

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