Description

- A 45 gram serving provides 32% protein, 18% fat min. 4.5 grams of Omega 3’s and 1.5 grams of Omega 6’s.

I’ve been using this on a few of my racehorses and I’m very happy with the results so far. It’s a more complete product compared to others on the market. My horses are eating it well (it smells great), and I’m seeing noticeable improvement in their toplines, coats, muscle tone, and overall recovery. I plan to start using it across my entire barn. Highly recommend!
Sarah W
I have only used Pro Amino on my personal horses and the grass on clients horses. I am completely blown away by how great the Pro Amino Formula works. It alone has helped my ulcer prone filly. Now I am not having to give ulcer meds as often, only when we travel. Their coats looked good before but look wow now and their feet grow so fast.
Stephanie, Alabama
Best muscle supplement I have ever used. Noticed improvement in 7 to 10 days! I now have 3 friends trying it!!! My horse feels AMAZING. I have never seen this dramatic results so quickly! We’ve been on a it about 21 days and he’s shaved off 2 min/mile in his workout and isnt ready to quit! He is 13 yrs old and has recently had trouble developing and/or maintaining topline. No MORE! He is getting his topline back and developing beautiful muscle at the same time. I could not be happier!
Toni Martin Barrel Horses
Horse Amino Acid Supplement for Topline, Muscle & Performance
Why Amino Acids Matter for Horse Health and Topline Development
Amino acids are often called the building blocks of protein because every muscle fiber, tendon, ligament, enzyme, hormone, and many immune system components depend on them. While horses can produce some amino acids naturally, the ten essential amino acids must come from the diet. If even one essential amino acid is lacking, the horse cannot efficiently build or repair muscle tissue. This is why amino acid balance is often more important than simply feeding more protein.
Pro Amino was developed to provide a complete amino acid profile rather than relying on only one or two amino acids. By supplying all ten essential amino acids along with carefully selected non-essential amino acids, Pro Amino helps support normal muscle maintenance, topline development, tissue repair, and overall body condition.
Why Do Horses Need Essential Amino Acids?
Horses need essential amino acids because their bodies can’t produce them, yet they are the fundamental building blocks required to synthesize proteins. Without them, a horse cannot grow, repair tissues, or maintain muscle mass. Essential amino acids must be consistently supplied through their daily diet of forage, grains, or supplements.
Helps Growing, Breeding and Senior Horses
Many horses can benefit from additional amino acid support, including:
- Performance horses in regular training
- Horses returning from injury
- Senior horses losing muscle tone
- Growing foals and young horses
- Pregnant and lactating mares
- Hard keepers
- Horses recovering from illness
- Horses with poor topline
Unlike products that simply add extra protein, Pro Amino focuses on delivering the amino acids horses actually use to build lean muscle. Protein quality matters just as much as protein quantity.
Why Flaxseed and Chia Matter
Pro Amino also includes premium milled flaxseed and chia seed, providing naturally occurring Omega-3 and Omega-6 fatty acids that help support healthy skin, coat condition, and normal inflammatory responses after exercise.
Improve Topline and Muscle Development
Building a stronger topline requires more than nutrition alone. Proper exercise, balanced minerals, adequate calories, quality forage, dental care, and consistent conditioning all work together. However, even an excellent exercise program cannot maximize muscle development if essential amino acids are missing from the diet. Research and equine nutrition experts consistently emphasize that adequate essential amino acid intake is a key nutritional factor in supporting muscle protein synthesis.
Whether your goal is helping a young prospect develop correctly, supporting an aging horse, improving recovery after competition, or simply maintaining healthy muscle throughout the year, providing a balanced source of essential amino acids can make a meaningful difference.
Because Pro Amino contains no added vitamins or minerals, it can easily be paired with your existing Equine Challenge forage-specific vitamin and mineral supplements, allowing horse owners to customize nutrition without unnecessarily duplicating nutrients.
Pro Amino 10 Essential's
Pro Amino comes in a milled flaxseed base with added chia seed. Both flaxseed and chia seed are excellent sources for amino acids.
Arginine – can help the horse by preventing muscle loss and to restore lost muscle. In the muscle, it works as a building block for creatine. The horses body needs creatine to build and maintain healthy, strong muscles. In the arteries, it increases nitric oxide (NO). NO helps keep the endothelial cells healthy. Accelerates wound and burn healing.
Histidine – necessary for growth. An important constituent of muscle. Stimulates production of red and white blood cells. Helps treat arthritis.
Isoleucine – Used for muscular energy production. Helps treat nervous system degeneration.
Leucine – Maintains muscle strength during times of physical stress and intensive exercise. Inhibits breakdown of muscle proteins. Stimulates insulin release.
Lysine – The most important amino acid for improving growth in young horses. The major amino acid used as a standard for dietary content in growing horses. Aids in formation of antibodies to control viral infection. Important in fat metabolism. Supports hoof and coat health along with providing support for the immune system.
Methionine – Regulates cell metabolism and growth, antioxidant, constituent of muscles. Supports healthy skin, hooves, tendons, ligaments and cartilage.
Phenylalanine – Antidepressant and aids in pain relief for the horse.
Threonine – Essential for optimum growth, feed conversion and nitrogen balance in tissues. Component of digestive enzymes, immune system and muscle systems.
Tryptophan – Regulates growth hormone. May aid in control of nervous behavior. Promotes feed intake. Precursor for production of serotonin
Valine – Vital for muscle coordination. Metabolized in the muscle – energy metabolism and protein synthesis.
Frequently Asked Questions
Related Products & Articles
Essential amino acids provide the nutrients needed to build and repair muscle tissue. Combined with proper nutrition and exercise, they help support healthy topline development.
Growing horses, breeding mares, senior horses, performance horses, horses recovering from injury, and horses with poor muscle condition can all benefit from balanced amino acid supplementation.
Pro Amino provides all ten essential amino acids along with 6 additional non-essential amino acids to support muscle development, recovery, and overall health.
Yes. Because Pro Amino does not contain added vitamins or minerals, it works well alongside a balanced vitamin and mineral program without unnecessarily duplicating nutrients.
Every horse is different. Improvements depend on diet, exercise, health status, and management. Consistent nutrition and conditioning are typically required over weeks to months to support visible topline development.
Equine Challenge™ Pro Amino Feeding Instructions:
Feed one scoop daily.
Provide to horses at the rate of approximately 45 grams per day (1 scoop). Usage rate may be adjusted proportionately (based on weight) for younger horses, lighter breed or heavier breeds. etc…. Daily dosage may be divided to accommodate multiple feedings.
*Proteins should be fed at the same time vitamins and minerals are fed




