Muscle Building Horse Supplements

Whether you are looking to add muscle to your racehorse or just add some more pounds to your pleasure horse, giving a muscle building supplement can truly make a difference. Many products offer more calories for those hard keepers without making them "hot". Common ingredients include Gamma Oryzanol and/or Creatine both of which could be a natural alternative to potentially harmful steroids. There are also select formulas that benefit not only muscle development, but stress relief, recovery from overexertion, healthy coat & hoof development and general vitamin & mineral support. There are also many weight gain supplements that share the same qualities, so be sure to shop all our weight gain supplements here.

Horse Supplements - lowest prices

Sort By
Body Builder
Big Dee's Tack and Vet Supplies
$25.95 - $69.95

Body Builder by Equiade has been used by some of the BEST in the industry successfully for over 22 years. Rice bran oil and rice bran oil extract contain the natural compound, Gamma Oryzanol. Body Builder is a unique, specially formulated, emulsified liquid concentrate equine health product.

Product Details:

  • Not a hormone or a vitamin, it is a supplement
  • No side effects
  • No prescription needed
  • Used by body builders, horses & other athletes
  • Natural and safe
  • Designed for body building & peak performance without stress or other side effects

Deionized water, corn oil, cane sugar, citric acid, methylparaben, propylparaben, and natural & artificial flavors.

Guaranteed Analysis:
Rice Bran Oil...331mg/5ml

Ultra Growth
$37.50 - $126.75

Ultra-Growth by Cox Vet labs, a muscle-building nutritional liquid feed supplement for animals that builds powerful, swift muscle at an optimal rate while diminishing stress.

Peoduct Details:

  • Key ingredient: Gamma Oryzanol, for muscle development, rather than fat
  • Protects against the debilitating effects of stress
  • Also contains creatine to promote lean muscle mass, reduce muscle wasting and increase heart function
  • Healthy and highly advantageous alternative to anabolics
  • Guaranteed Analysis: Gamma oryzanol...4,000mg/oz Creatine Orotate...200mg/oz
  • 32 oz bottle is a 64 day supply

*Cox Veterinary Laboratory products cannot be shipped outside of the contiguous United States. Safe use of Ultra-Growth in pregnant mares or animals intended for breeding has not been proven. 

Creatine Power EE 5 lb
Big Dee's Tack and Vet Supplies

Creatine Power EE contains pure Creatine Ethyl Ester without sugars or fillers. Creatine Ethyl Ester is similar to Creatine monohydrate but has an ester attached. Esters are organic compounds that are formed by esterification - the reaction of carboxylic acid and alcohols. Creatine Ethyl Ester is an extremely soluble form of Creatine that results in superior absorption, bioavailability, and molecular stability. With direct absorption, Creatine EE may not have the side effects of Creatine Monohydrate such as possible cramping and dehydration.

Gauranteed analysis: Creatine Ethyl Ester...20,000mg/20g

Creatine Power 5000
$40.95 - $86.95

Creatine Power 5,000 by Peak Performance contains pure Creatine Monohydrate without sugars or fillers. Designed specifically for the rigors of heavy training, Creatine may help delay fatigue in the muscles which allows for a longer, more intense workout.

  • Superior absorption
  • Muscle power
  • Recovery support
  • Energy support

Guaranteed Analysis: Creatine Monohydrate...5,000mg/5g

Go Big  1.23 lb
Big Dee's Tack and Vet Supplies
$66.95 - $69.95

G.O. Big by Peak Performance Nutrients - Gamma Oryzanol Muscle Building Matrix

G.O. Big is the only equine supplement specifically designed to promote long term, lean muscle mass on exercised horses. With the Gamma Oryzanol and G.O. Big's proprietary Muscle Building Matrix for true muscle gain helps to build and maintain muscularity, strength and recovery time.

Product Details:

  • Proprietary blend of Gamma Oryzanol, Amino acid complex and L-lysine
  • Proprietary Muscle Matrix gives way to long term muscular growth, strength and recovery time
  • Provides the highest level of pure, high quality Gamma Oryzanol for quick gains
  • Improvements will be seen on the track and in the show ring with improved stamina, endurance and recovery
M.A.S.S Builder
Big Dee's Tack and Vet Supplies
$39.95 - $139.95

Creatine Power 5,000 by Peak Performance contains pure Creatine Monohydrate without sugars or fillers. Designed specifically for the rigors of heavy training, Creatine may help delay fatigue in the muscles which allows for a longer, more intense workout.

  • Superior absorption
  • Muscle power
  • Recovery support
  • Energy support

Guaranteed Analysis: Lysine...2,000mg/oz Rice Brand...1,500mg/oz Threonine...1,000mg/oz Fenugreek...20mg/oz

32 day supply for 32 oz container and 128 day supply for gallon

Formula 707 MuscleMx
$34.95 - $89.95

MuscleMx by Formula 707 is a natural dietary supplement to support muscle growth. For all horses challenged in the task of adding or simply maintaining muscle mass, MuscleMX is the real solution for real results.

Product Details:

  • Lysine, the most essential of the 11 essential amino acids, lays the foundation for the formation of muscle-building proteins.
  • Gamma oryzanol, a natural plant extract, assists in weight gain and muscle formation in all classes of the horse.
  • Creatine, a naturally occurring organic acid, helps supply energy to muscle cells by stepping up production of ATP, the body’s energy-transport molecule.
  • Ornithine Ketoglutarate (OKG), an organic salt based on the amino acids ornithine and glutamine, bypasses the inhibitory metabolic processes preventing new muscle development.
Muscle-UP Max Performance 2 lb
Big Dee's Tack and Vet Supplies

Muscle-UP Max Performance by Ani-Med supports a horse's normal muscle development and composition while helping to maintain optimal health and physical condition.

Product Details:

  • L-lysine 9150mg per ounce
  • Added benefit use with Muscle Up Recovery
  • 2 lb. jar
  • Feeding Directions:

  • 1 to 2 scoops once or twice daily
  • (1 scoop equals 1 ounce)
    Muscle-UP Max Recovery 2 lb
    Big Dee's Tack and Vet Supplies

    Muscle-UP Max Recovery by AniMed supports a horse's ability to bounce back, mentally and physically, after vigorous exercising, eventing, or showing.

    Product Details:

  • For added benefit use with Muscle Up Max Performance
  • Supports normal recovery after activity
  • 2 lb jar
  • Feeding Directions:

  • Feed 1 to 2 scoops (1 ounce) once or twice daily
  • For Maximum effect start feeding 7 to 10 days prior to competition or event
    Muscle Mass 32 oz
    Big Dee's Tack and Vet Supplies

    More defined muscles don’t just look good, they’re essential to help your horse achieve its maximum potential performance. Muscle Mass supports the normal cardiovascular, immune and neurological function of your horse and provides nutrients to support normal physical and mental performance. Muscle Mass combines both creatine and gamma oryzanol, two of nature’s most effective ingredients, along with a complete array of beneficial bacteria and other digestive system enhancers. It also contains Lysi-Crea Complex, which is comprised of lysine and creatine.

    Guaranteed Analysis: (per 15ml)
    Gamma Oryzanol...1,000mg

    Muscle Tone
    $29.95 - $45.95

    Muscle Tone by Finish Line promotes healthy muscle development and function in performance horses.

    • Contains MYO-PRO, a proprietary and palatable blend of Lecithin, Ascorbyl Palmitate and Tart Cherry
    • Also contains Rice Bran Oil, Wheat Germ Oil, Flax Seed Meal and Creatine for a healthy coat, weight gain along with muscle development
    • Feed during or after meal time
    • Made in the USA

    2.12 lb provides a 45 day supply.
    4.25 lb provides a 90 day supply.

    Do not feed to horses with kidney problems or metabolic disorders.
    Product has not been approved for use in pregnant animals or animals intended for breeding.

    Purina Supersport 25 lb
    Big Dee's Tack and Vet Supplies

    Purina SuperSport amino acid supplement is scientifically formulated and demonstrated in published research to support:
    RECOVERY: More rapid recovery of muscle cell integrity after exercise to help horses bounce back faster.
    PERFORMANCE: Increased exercise capacity for higher performance over a longer period of time.
    MUSCLE MASS: Supports muscle development for a more athletic body type.

    Product Details:

    • Feed Form: Pellets
    • Recommended For: Top Equine Athletes of all ages in all disciplines
    • Formulated by Purina Ph.D. Equine Nutritionists
    • Quality Checked
    • Made with Feed Guard Nutrition System


    Fat Cat
    $24.95 - $83.95

    Fat Cat by Vapco is the ultimate equine sport body builder. Fat-Cat's advanced formulation has been especially engineered to provide all horses with a powerful blend of nutrients designed to enhance optimal muscularity, sound firmness and peak fitness. A precise combination of high-quality proteins merged with essential amino acids and energy packed carbohydrates to boost muscle and strength development and increase muscle energy.

    Product Details:

    • Improves performance levels and appearance of skin and coat
    • Contains essential fatty acids— omega-3 and omega-6
    • Nutrient dense formula with biotin, L-lysine and DL-methionine for improved hoof strength & mane/tail
    • Increased stamina, size, strength and leanness from key body building nutrients and select vitamins & minerals
    • Digestive enzymes & beneficial microflora allow for excellent digestion and nutrient absorption
    Body For Winners
    $44.95 - $399.95

    Body for Winners by Pro Formula adds muscle mass, strength and oxygenation. Great for horses in training, performance or sales. Formulated by Dr. Leonard M. Cohn, this proprietary nutritional formula is made from superior human grade ingredients and is quality controlled to insure optimum potency, absorption and effectiveness.

    Product Details:

    • Healthier choice over anabolic steroids
    • Will not test in competition
    • Adds 14-20% in lean muscle mass with the strength to back it up
    • Faster recovery from exercise and events
    • Increases cellular oxygen intake by 27-35%
    • Do not feed to pregnant or lactating mares

    Ingredients: Proprietary blend of magnesium, calcium, zinc, phytosterols, flavanoids, natural and artificial cherry flavor.

    Feeding Directions: Give one scoop (1/2 oz) for 21 days. Then give one scoop (1/2 oz) every other day.

    1 lb = 43 Day Supply (includes loading dose)

    3 lb = 171 Day Supply (includes loading dose)

    10 lb = 619 day supply (includes loading dose)

    Enhancer Release The Power 32 oz
    Big Dee's Tack and Vet Supplies

    The Enhancer's formula by Cox Vet Labs is especially effective because of its unique ability to trigger a powerful (but safe) chain reaction. Gamma Oryzanol is thought to stimulate the body to produce more of the second ingredient, Pregnenolone, which, in turn, stimulates increased bodily production of DHEA. The three of them stimulate improved production from the body's hormone and glandular systems. This sophisticated blend puts The Enhancer out in front as the most promising product for optimizing a horse's speed and strength in a safe and healthy way while increasing muscle mass.

    Whether a horse is a yearling in training, in the prime of life or has moved into the teens, The Enhancer might be the best supplement for building muscle and speed, while enhancing overall health. In one and two-year-olds, The Enhancer stimulates the building of strong bones and connective tissue, as well as muscle and speed. It helps the horse in its prime to develop optimal strength and speed. As a horse ages, this unique product helps it to maintain the hormone production levels of its youth, thus helping the equine body maintain peak muscularity, speed, alertness, and overall health to a more advanced age.

    Guaranteed Analysis:

    • Gamma Oryzanol...2,500mg/oz
    • DHEA...600mg/oz
    • Pregnenolone...600mg/oz

    64 Day supply

    Cox Veterinary Laboratory products cannot be shipped outside of the contiguous United States.

    Creatine Gold 5 lb
    Big Dee's Tack and Vet Supplies

    Creatine Gold by TRM Ireland Contains no fillers, sugars, or cutting agent. Creatine Gold helps to delay fatigue, shorten recovery time and helps muscles work harder and longer. 

    Product Details:

    • Creatine is a nutrient that is found naturally in the body
    • When ingested it bonds with phosphoric acid to form the high energy compound ‘creatine phosphate’
    • Keeps muscles working at maximum power and increases stamina
    • Decreases amount of muscle recovery time
    • Horse performance will improve do to increased muscle, energy and stamina

    Guaranteed Analysis
    Per 1oz (28g)... 28,349mg - 99% Creatine Monohydrate

    Inosine 1 lb
    Big Dee's Tack and Vet Supplies

    Inosine by Peak Performance is a naturally occurring organic compound in plants and muscle tissue. It is used in enzymes that regulate muscular contraction and blood flow.

    Inosine is believed to increase the oxygen-carrying capacity of red blood cells and improve oxygen delivery to muscles which in-turn inhibits lactic acid build-up.

    Product Details:

    • Increases oxygen carrying capacity in blood cells and improves oxygen delivery to muscles
    • Reduces lactic acid build up
    • Natural and organic formula

    0.45 kilogram in powder form is a 90 day supply for one horse.

    Top Line Xtreme 15 lb
    Big Dee's Tack and Vet Supplies

    Top-Line Xtreme is a revolutionary, soy-free supplement containing an optimum balance of essential amino acids required to enhance the topline of a horse.

    Product Details:

    • Contains cutting edge nutritional technology with select ingredients to provide the ultimate in muscle growth, development and performance.
    • Horses fed Top-Line Xtreme have experienced quick and effective response for top-line, muscle definition and overall development.
    • They have also seen improvement in recovery time or how fast horses "bounce back" and perform on subsequent days of competition.
    • Pellet form so it can be fed by itself or top-dressed with your horses' grain mixture.
    • Predictable results - use with any feed on any horse Source of Gamma Oryzanol
    • An easy to feed scoop in enclosed
    $21.95 - $89.95

    L-Lysine (Monohydrochloride) by Kauffman's Animal Health is an essential amino acid necessary for growth, development, tissue maintenance and repair.

    Product Details:

    • Encourages hoof growth
    • Promotes stronger hooves
    • Supports tissue maintenance and repair

    The 4 lb tub provides up to a 2 month supply and the 25 lb provides a 12 month supply for one horse.

    Cool Calories 100
    $29.95 - $54.95

    Cool Calories 100 is a concentrated energy supplement suitable for all types of horses and is the perfect, easy-to-use addition to your feeding program for weight gain, focused energy, and haircoat condition. Cool Calories 100 provides essential fatty acids for skin and hair condition, as well as the calories needed for weight gain and exercise performance. Research has shown the addition of fat and reduction in carbohydrate decreases excitability in horses, making Cool Calories 100 the ideal calorie source for all types of performance horses.

    Product Details:

    • Contains 5 times the fat of an equal amount of stabilized rice bran
    • 8 pounds of Cool Calories 100 has the fat content of 40 pounds of rice bran
    • Does not conflict with fortified feeds
    • Has a delicious smell, is presented in a dry, beaded form, and is very palatable
    • Contains no sugar or carbohydrates Is easy to feed, and is safe and economical
    • Helps with skin and coat
    • Aids in putting on weight without making your horse hot
    $44.95 - $98.95

    Clovite Conditioner by Zoetis is a top line conditioner for all species of animals, including young foals and weanlings, brood mares, colts, stallions and horses in training. This vitamin supplement contains high levels of vitamins A, D and B12.

    Product Details:

    • Helps with night vision
    • Aids in keeping a healthy immune, respiratory, reproductive, and nervous system
    • Supports proper growth in foals
    • Promotes superior body condition in all phases of life for horses
    • B Vitamins to help keep energy levels up through training and growth
    Gamma 1150 Forte 32 oz
    Big Dee's Tack and Vet Supplies
    $77.95 - $79.95

    Gamma 1150 Forte is a feed supplement made with highly concentrated Rice Bran Oil. It contains the plant sterol Gamma Oryzanol as well as naturally occurring tocotrienols and tocopherols. When fed daily it will provide a powerful antioxidant network and will promote muscle development, physical well being and improve overall appearance.

    Caution: The use of this product may contravene the rules of equestrian competition. The manufacturer recommends consultation with your governing body.

    Now contains Alu-Flask to ensure maximum freshness


    APF Pro Equine
    $64.95 - $186.00

    APF Pro Equine is the most advanced herbal formula for use in horse to protect the immune system and cellular metabolism. APF Pro provides your horse a much needed ulcer fighting benefit while still providing the necessary stress protection. Research has shown that Aralia can provide important protective benefits to fight against stress caused ulcers.

    Product Details:

    • Improved formula provides powerful anti-catabolic action to help build and maintain skeletal muscle
    • Increases resistance to stress induced gastric ulcers
    • Protects the immune system from long-term or intense stress
    • Optimizes glucose uptake and utilization in muscle cells
    • Promotes higher levels of ATP and CP in muscle cells
    • Improves utilization of lipids (fats) for long-term energy production
    • Improves and protects mitochondrial efficiency
    • Delays the onset of fatigue during exercise Improves recovery from physical exertion
    • Protects digestive function by providing sustained energy to the GI tract
    • Delivers powerful anti-oxidant activity to protect against free radical damage
    • Protects against the damaging effects of intense or chronic stress
    Myo Guard
    $31.95 - $199.95

    Natural body defense mechanisms may be unable to provide enough protection against oxidation when horses train for or compete in strenuous exercise, so support your horse’s muscular system with Myo-Guard by Kentucky Performance Products.

    Product Details:

    • Supports the antioxidant status of the horse’s body during exercise and replaces magnesium lost in sweat.
    • Contains natural vitamin E.
    • Supplemental source of selenium, magnesium, and vitamin C.
    • Palatable and easy to feed.
    • Oxidation accelerates during athletic effort because oxygen use increases.
    Magic Power 14oz
    Big Dee's Tack and Vet Supplies

    Newly Formulated Magic Power by Black Magic is an all-natural, herbal, very effective pain reliever, muscle and joint supplement that supports the reduction of joint and muscle soreness. Can be given just prior to a competitive event and really addresses chronic pain issues.

    Product Details:

    • 14 doses
    • More fluid motion
    • Natural continued well being
    • More durability
    • Quicker recovery between performance events
    • More muscle strength
    • Made of Boswellia, Chinese Skullcap, White Peony, White Willow Bark, Turmeric and Ginger.
    Progressive Nutrition ProAdd™ Ultimate Supplement
    Big Dee's Tack and Vet Supplies

    ProAdd Ultimate Supplement provides essential nutrients for optimum muscle development, weight over the topline, healthy skin and coat, and healthy strong hooves.

    Product Details:

    • Save money – all-in-one supplement replaces many individual supplements
    • Complete nutrition “all-in-one supplement”
    • Biotin added for healthy hooves
    • For improved muscle
    • Enhanced topline weight
    • Shiny hair coat
    • Digestive Health
    • Optimum support for bones and tendons
    • Feed as a supplement with existing feeds
    • Horses look and perform their best
    • 25 lb. Bag

    Additional Features/Benefits:

    • Contains less than 8% nonstructural carbohydrates (NSC) so it is ideal for horses with special needs such as PSSM, laminitis or Cushing’s.
    • No scoop included
    • Balanced ratios of Omega 3 and Omega 6 fatty acids
    • Optimal calcium and phosphorus ratios

    More Muscle Maximize 8 lb
    Big Dee's Tack and Vet Supplies

    Absorbine More Muscle Maximize Pellets provides complete conditioning to support digestion and bioavailability of muscle building ingredients. Perfect for improving weight, muscle tone, coat and hoof appearance.

    Product Details:

    • Enhance bioavailability and protein metabolism
    • Training and performance support for exercising muscle
    • Supports Healthy Digestion
    • Helps maintain calmness
    • May reduce the possibility of digestive colic
    • 60 Day supply for 1 horse
    Golden Gro Equine Formula 25 lb
    Big Dee's Tack and Vet Supplies

    Golden Gro is a soy based protein supplement that is ideal for all competitive horses including; standardbred, thoroughbred, polo, hunter-jumper, dressage. Golden Gro helps muscle growth and definition, enhances coat and hoof growth and is an all around great supplement for competitive horses.

    Product Details:

    • Balanced nutritional fortification
    •  Palatable, extruded particle for easy digestion and calorie absorption
    • Aids muscle development, growth, and overall size
    • 100% natural, no additives, chemicals, or preservatives
    • 12 natural amino acids help promote healthy hair, coat, and hooves
    • Good for all breeds
    • Nutritionist Formulated
    • Guaranteed Analysis: Crude Protein not less than 38%, Crude Fat not less than 18%, Crude Fiber not less than 5%
    Golden Gro Equine Formula with Biotin 25 lb
    Big Dee's Tack and Vet Supplies

    Golden Gro with Biotin is a soy based protein supplement that is ideal for all competitive horses including; standardbred, thoroughbred, polo, hunter-jumper, dressage… Golden Gro helps muscle growth and definition, enhances coat and hoof growth and is an all around great supplement for competitive horses. Our clients include world-record holders and Breeder's Crown champions.

    Product Details:

    • Palatable, extruded particle for easy digestion and calorie absorption
    • Aids muscle development, growth, and overall size
    • 100% natural, no additives, chemicals, or preservatives
    • 12 natural amino acids help promote healthy hair, coat, and hooves
    Rabbits Creatine Muscle Fuel
    Big Dee's Tack and Vet Supplies

    Rabbit's Creatine Muscle Fuel

    99.5% Pure Creatine used for energy and muscle building.

    Equisel-Lyte 2.2 lbs
    Big Dee's Tack and Vet Supplies

    Equisel-Lyte by Omega Alpha

    An ideal post workout muscle builder that also aids in re-hydration of your horse after strenuous exercise. Includes Branched Chain Amino Acids fro proper muscle function and post workout muscle recovery.

    Product Details:

    • Contains branched chain amino acids
    • Replaces minerals lost in sweat
    • Helps to build muscle
    • Amino acid spares muscle breakdown
    • Best given post exercise
    • Powder
    • Not recommended for mares in foal
    • Refine by:
    • Clear
      Absorbine (1)
      AniMed Horse Care (2)
      Auburn Laboratories Inc. (1)
      Black Magic (1)
      Corta-Flx (1)
      Cox Vet Labs (2)
      Equiade (1)
      Equine Excellence Enterprises (2)
      Finish Line (1)
      Formula 707 (1)
      Kauffmans Animal Health (1)
      Kentucky Performance Products (1)
      Kinetic (1)
      Omega Alpha (1)
      Peak Performance Nutrients (4)
      Pro Formula (1)
      Progressive Nutrition (2)
      Purina Mills (1)
      Rabbits (1)
      Start To Finish (1)
      TRM (2)
      Vapco (1)
      Zoetis (1)
    • Clear
      • $10.00-$24.99 (2)
      • $25.00-$49.99 (15)
      • $50.00-$99.99 (11)
      • $100.00-$199.99 (3)
    • New Item (1)
    Recently Viewed Categories