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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
Sentinel Care Omegatin (Blue Seal)
FatFat
PerformancePerformance
ProteinProtein
Ration BalancerRation Balancer
Sentinel Care Omegatin from Blue Seal is a high-fat supplement intended for horses requiring additional calories. It is a 15.7% NSC formula containing high fat ingredients such as rice bran and soybean oil.
Sentinel Grow & Excel GX (Blue Seal)
ExerciseExercise
FoalFoal
GrowthGrowth
PerformancePerformance
Sentinel Grow & Excel GX is an extruded feed for hard keepers as well as growing, breeding, and performance horses. It provides 10% crude fat, 15% fiber, and a maximum of 17% NSC.
Sentinel LifeTime (Blue Seal)
FatFat
FiberFiber
JointsJoints
PerformancePerformance
Sentinel LifeTime is an extruded feed intended for junior, adult and senior horses that require a higher caloric density. It provides 10% fat, 20% fibre and a maximum NSC of 14.5%.
Sentinel Performance LS (Blue Seal)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
PerformancePerformance
SeniorSenior
Blue Seal Sentinel® Performance LS is an extruded feed providing a maximum of 14% NSC. It is intended for horses requiring a higher calorie diet, such as equine athletes and hard keepers.
Sentinel Safe Start SS (Blue Seal)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
LactationLactation
Sentinel Safe Start SS is an extruded complete feed formulated for broodmares and growing foals. It provides higher protein content (16%) to meet the increased demands of late gestation, early lactation, and developing foals.
Sentinel Senior SR (Blue Seal)
DentalDental
Feed EfficiencyFeed Efficiency
Ration BalancerRation Balancer
SeniorSenior
Sentinel Senior SR is an extruded feed for older horses and mature easy keepers. It is formulated to provide higher feed efficiency for senior horses with gut issues or poor teeth. The addition of bioavailable marine-sourced calcium supports gastric pH and health.
Sentinel Simply Lite (Blue Seal)
Easy KeeperEasy Keeper
Gut HealthGut Health
Metabolic SyndromeMetabolic Syndrome
ProbioticProbiotic
Sentinel Simply Lite from Blue Seal is a low-calorie pelleted feed intended for adult horses. Formulated for easy keepers, Sentinel Simply Lite provides lower fat and protein content with 16.2% NSC.
Sentinel XT Grow (Blue Seal)
FiberFiber
FoalFoal
GrowthGrowth
LactationLactation
Sentinel® XT™ Grow is a textured horse feed intended for growing foals and lactating mares. It provides 10% fat and 16% protein with primary ingredients including soybean hulls, beet pulp and alfalfa meal.
Sentinel XT Pro (Blue Seal)
GrowthGrowth
NutrientsNutrients
PerformancePerformance
SeniorSenior
Sentinel XT Pro by Blue Seal is a textured feed intended for growing horses, performance horses, gestating mares, breeding horses and senior horses.
Sentinel XT Show (Blue Seal)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
ExerciseExercise
Weight IssuesWeight Issues
Sentinel® XT™ Show is a textured feed intended for active adult horses and competition horses with higher nutrient requirements. It provides a higher fat content (12%) and digestible fibre sources including soybean hulls, beet pulp and alfalfa meal.
Sho-Glo Pellets (Manna Pro)
Coat QualityCoat Quality
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
Sho-Glo Pellets from Manna Pro is a complete vitamin and mineral supplement for horses. Sho-Glo Pellets use a mix of organic and inorganic trace minerals.
Show Formula (Seminole)
Competition HorsesCompetition Horses
ExerciseExercise
FatFat
PerformancePerformance
Seminole Show Formula is a textured feed for adult show and competition horses because of it's high calorie and energy density. Show Formula contains yeast cultures, chelated minerals, and antioxidants.
Show Ready EQ (Foxden Equine)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
NutrientsNutrients
StressStress
Show Ready EQ by Foxden Equine is a paste supplement intended for performance horses. It contains ingredients such as magnesium proteinate, magnesium citrate, L-tryptophan, and B vitamins to support calm behaviour.
Showman (ProElite)
Complete FeedComplete Feed
Low NSC FeedsLow NSC Feeds
MuscleMuscle
PerformancePerformance
ProElite by Showman is a pelleted, extruded feed intended for mature horses in moderate to intense work. It is intended to be a low glycemic feed for supporting muscle strength.
Showtorque (Hygain)
Complete FeedComplete Feed
FatFat
MuscleMuscle
ProteinProtein
Showtorque by Hygain is a high-protein and fat pelleted feed designed for performance horses. It contains 20% protein, 9% fat, and 16% fibre with added yeast for improved digestion.
Signature Elite (Banks Mill Feeds)
Mineral BalanceMineral Balance
MuscleMuscle
PerformancePerformance
VitaminsVitamins
Banks Signature Elite is a beet pulp-based textured feed that provides high fat and fibre with probiotics. It is intended for mature horses in work.
Signature Prime (Banks Mill Feeds)
Mineral BalanceMineral Balance
NutrientsNutrients
SeniorSenior
VitaminsVitamins
Banks Signature Prime is a high-fat beet pulp-based textured feed with no corn. It is intended for senior horses as well as mature horses that need to gain weight.
Silhouette (Cavalor)
Easy KeeperEasy Keeper
FiberFiber
HealthHealth
NutrientsNutrients
Silhouette from Cavalor is a fibre protein mixed feed. This feed is intended for easy keepers or horses who need to lose additional body weight.
Sleek (Banks Mill Feeds)
FatFat
FiberFiber
MuscleMuscle
PerformancePerformance
Sleek by Banks Feed Mill is a high-fat, beet pulp-based feed with low (7%) starch content. It contains 13% fat from flax, rice bran, and soybean oil.
Slobber Mash (Havens Horsefeed)
FiberFiber
Hoof HealthHoof Health
NutritionNutrition
Skin + HairSkin + Hair
Slobber Mash is a grain-based equine feed containing barley flakes, wheat bran, and corn. This feed is intended for older horses with difficulty chewing and broodmares to support fertility. It is a palatable feed with a high 44.2% NSC.
SmartEssentials Pellets (SmartPak)
Mineral BalanceMineral Balance
Omega 3-6-9Omega 3-6-9
Ration BalancerRation Balancer
VitaminsVitamins
SmartEssentials Pellets from SmartPak is a vitamin and minerals supplement with added essential fatty acids and amino acids. Omega-3s are sourced from flaxseed and fish oil.
SmartVite Perform (SmartPak)
Competition HorsesCompetition Horses
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
VitaminsVitamins
SmartVite Perform is a pelleted mineral and vitamin supplement intended for performance horses. It includes higher nutrient levels which can support horses in heavy exercise.
SmartVite Perform Senior (SmarkPak)
ImmunityImmunity
Mineral BalanceMineral Balance
SeniorSenior
VitaminsVitamins
SmartVite Perform Senior is a vitamin and mineral supplement for working senior horses. It is also intended to support immunity and provide antioxidants.
SmartVite Thrive (SmartPak)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
SmartVite Thrive is a ration balancer meant to provide adult horses with essential vitamins and minerals in light or no work. It also contains vital amino acids and is highly palatable with vegetable oil, rice bran, and flaxseed meal ingredients.
SmartVite Thrive Senior (SmartPak)
HealthHealth
Mineral BalanceMineral Balance
SeniorSenior
VitaminsVitamins
SmartVite Thrive Senior Pellets is a low feeding rate mineral and vitamin supplement for senior horses. It is formulated with added antioxidants for immune function and increased levels of B vitamins.
Solutions 10 Pellet (Right Choice)
Amino AcidAmino Acid
Complete FeedComplete Feed
FatFat
NutritionNutrition
Solutions 10 is a 10% protein and 6% fat pelleted complete feed. This feed is formulated for horses in work and at maintenance. It contains both organic and inorganic sources of minerals, yeast, and added amino acids.
Solutions 10 Textured (Right Choice)
Complete FeedComplete Feed
FatFat
Gut HealthGut Health
NutritionNutrition
Solutions 10 Textured by Right Choice is a textured complete feed containing 10% protein, 10% fat, and 26.5% NSC. It is formulated for horses in work and maintenance.
Solutions 12 Pellet (Right Choice)
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
ProteinProtein
Solutions 12 by Right Choice is a textured complete feed intended for horses at work and maintenance. It contains 12% protein and 8% fat with added yeast and amino acids.
Solutions 12 Textured (Right Choice)
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
ProteinProtein
Solutions 12 Textured is a complete feed with 12% protein and 6% fat. It is formulated using corn, oats, barley, and wheat as energy sources. It also contains soybean as a protein source and soybean oil as a fat source.
Solutions 14 Cube (Right Choice)
Complete FeedComplete Feed
FiberFiber
NutritionNutrition
ProteinProtein
Right Choice Solutions® 14 Cube is a cubed feed with 14% protein intended for horses in work and at maintenance. It provides protein from alfalfa meal and extruded soybeans.
Solutions 14 Low Starch Pellet (Right Choice)
Complete FeedComplete Feed
FiberFiber
Low NSC FeedsLow NSC Feeds
NutritionNutrition
Solutions 14 Low Starch is a pelleted complete feed that contains 14% protein and 7% fat. It is formulated for working and maintenance horses and is marketed as a low NSC feed.
Solutions 14 Pellet (Right Choice)
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
ProteinProtein
Solutions 14 Pellet is a complete feed with 14% protein and 6% fat intended for horses at maintenance or in work. It utilizes alfalfa meal and extruded soybeans for protein.
Solutions 14 Textured (Right Choice)
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
ProteinProtein
Solutions 14 Textured is a complete feed containing 14% protein from soybean and alfalfa meal and 6% fat from soybean oil. It contains whole oats, cracked corn, wheat middling's, and molasses as energy sources.
Special 13 (Hallway Feeds)
EnergyEnergy
GrowthGrowth
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
Special 13 by Hallway Feeds is a textured sweet feed formulated with added protein, vitamins, and minerals to support the development of young horses and maintain the health of mature horses
Spectrum Choice 14% Horse – Pellet (Spectrum Feed Services)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
NutritionNutrition
Weight IssuesWeight Issues
Spectrum Choice 14% is a pelleted feed containing 14% crude protein and ~55% NSC. It is a low-fat, low-fiber product with a low feeding rate. This feed is intended for adult horses from light to heavy work.
Speed Feed (MAC)
HealthHealth
NutrientsNutrients
NutritionNutrition
PerformancePerformance
Speed Feed by MAC is a feed containing 14% protein and 4% fat, it is intended for all horse types.
Sport 14 (Banks Mill Feeds)
BroodmareBroodmare
Caloric EnergyCaloric Energy
FatFat
ProteinProtein
Banks' Sport 14 is a high-protein, high-fat textured feed intended for breeding and performance horses. It contains 16.6% NSC with energy sources including wheat middlings, oats, soybean oil, beet pulp, alfalfa meal, and cane molasses.
Sport 14 (McCauley’s)
FatFat
NutrientsNutrients
PerformancePerformance
ProteinProtein
Sport 14 from McCauley's is a pelleted horse feed. It is intended for racing or performance horses and is meant to support gut health. It is high in fat and protein.
Sport Horse Grass (Uckele)
Mineral BalanceMineral Balance
NutritionNutrition
Ration BalancerRation Balancer
VitaminsVitamins
Sport Horse Grass is a pelleted vitamin, mineral, and amino acid supplement intended for performance horses consuming a grass-based diet. This supplement is intended to support muscular function, joint/tendon maintenance, and recovery.
Sport Horse Mix (Elk Grove Milling)
Caloric EnergyCaloric Energy
FiberFiber
NutrientsNutrients
PerformancePerformance
Sport Horse Mix by Elk Grove Milling is a complete feed containing copra meal to provide cool energy. It is intended for horses in moderate work.
Sport Muesli (Havens Horsefeed)
BroodmareBroodmare
FiberFiber
NutritionNutrition
PerformancePerformance
Sport Muesli by Havens Horsefeed is a 13% protein textured feed intended for equine athletes. It contains alfalfa meal, corn flakes, oats, and flax oil as protein and energy sources.
Stability (Excel Equine Feeds)
Easy KeeperEasy Keeper
HealthHealth
NutrientsNutrients
NutritionNutrition
Stability is a pelleted feed from Excel Equine Feeds. This feed is intended for horses in any level of work, and stage of life.
Stable MAX Performance (Elk Grove Milling)
Complete FeedComplete Feed
MareMare
PerformancePerformance
StallionStallion
Stable MAX Performance is a complete feed from Elk Grove Milling intended for performance horses, stallions, and broodmares. It provides probiotics and 14% protein.
Stable MAX Senior Lite (Elk Grove Milling)
Complete FeedComplete Feed
NutritionNutrition
ProbioticProbiotic
SeniorSenior
Stable MAX Senior Lite is a complete feed from Elk Grove Milling intended for senior horses, hard keepers, and metabolic horses. It provides probiotics and 15% protein.
Stable Mix Futurity (Elk Grove Milling)
GrowthGrowth
PerformancePerformance
PrebioticPrebiotic
ProbioticProbiotic
Stable Mix Futurity by Elk Grove Milling is a pelleted feed intended for young horses in training.
Stable Mix Lite (Elk Grove Milling)
Complete FeedComplete Feed
HealthHealth
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
Stable Mix Lite by Elk Grove Milling is a high fiber feed containing less than 12% NSC. It is intended for easy keepers, or horses needing low sugar and starch diets.
Stabul 1 (Anderson Feed Co)
Easy KeeperEasy Keeper
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Weight IssuesWeight Issues
Stabul™ 1 is a low-starch (5%) and low-sugar (5%) feed intended for easy keepers and horses, ponies and mules with metabolic concerns. It is corn, oats and molasses-free.
Stabul 1 Plus (Anderson Feed Co)
ExerciseExercise
Metabolic SyndromeMetabolic Syndrome
NutritionNutrition
Weight IssuesWeight Issues
Stabul™ 1 Plus is a low-starch (5%) and low-sugar (5%) feed intended for horses that are in work or hard keepers. It is designed for horses with metabolic concerns to provide higher energy density.
Stake Horse (Woody’s Horse Nutrition)
Competition HorsesCompetition Horses
DigestionDigestion
FiberFiber
PerformancePerformance
Stake Horse by Woody’s Horse Nutrition is a beet-based 9% fat and 13% protein feed intended for racehorses. It is made with molasses, oats, barley, and beet pulp. This horse is intended for racehorses or performance horses.
Stallion Max (Hallway)
Caloric EnergyCaloric Energy
NutritionNutrition
Omega 3-6-9Omega 3-6-9
StallionStallion
Stallion Max from Hallway is a fortified high-fat, high-fibre feed formulated for stallions. This feed has added omega-3 fatty acids. Stallion Max contains 14% protein, 6% fat, and 12% fibre. It is recommended to start feeding 'Stallion Diets' 60 to 90 days before breeding season begins.

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