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Big Hoss™ by Outlaw- Nutrition — Health (One scoop for gut health, top-line, and full-body condition — built on…)

Big Hoss™ by Outlaw- Nutrition

One scoop for gut health, top-line, and full-body condition — built on cold-milled flax Omega-3.

Want a gut-supporting probiotic-prebiotic supplement built for the working ranch horse?

Reviewed by Ann Pruitt, InfoHorse.com · Updated May 2026
Outlaw Nutrition founder standing at a pasture fence with a grey horse
Outlaw Nutrition founder standing at a pasture fence with a grey horse

Big Hoss™ by Outlaw Nutrition is a comprehensive equine supplement designed to replace multiple products with one easy-to-use formula. Built on a foundation of cold-milled flaxseed — a plant-based source of Omega-3 at 12%+ Omega-3 fat and roughly 2,600 calories per pound — it is combined with a dried Lactobacillus helveticus fermentation product to optimize gut function and feed conversion. The result is a single top-dress that supports healthy weight and body condition, a strong gut and immune system, muscle development, and a healthy skin, coat, mane, tail, and hoof.

It is made for “every horse, every discipline, every barn” — from trail and pleasure horses to barrel, roping, racing, jumping, dressage, and eventing partners, as well as hard keepers and seniors. With under 5% sugar and starch, Big Hoss is formulated to be safe for horses with Cushing’s and insulin resistance. You can buy it directly from Outlaw Nutrition at outlaw-feed.com in a 10 lb reusable bucket, 25 lb bag, 50 lb bag, or as 30-day and 120-day supply packs.

Big Hoss equine supplement 50 lb feed bag from Outlaw Nutrition
Big Hoss equine supplement 50 lb feed bag from Outlaw Nutrition

What Is Big Hoss?

Big Hoss is an all-natural, plant-based equine nutrition supplement from Outlaw Nutrition. Its foundation is cold-milled flax, which delivers Omega-3 fatty acids with an Omega-3 to Omega-6 ratio of roughly 3:1 — more than half of the total fat coming from Omega-3. What separates Big Hoss from straight flax is the addition of a dried Lactobacillus helveticus fermentation product, a microbial ingredient that helps feed the healthy gut flora while working to deactivate negative bacteria throughout the digestive tract.

The full ingredient list includes milled flaxseed, dried Lactobacillus helveticus fermentation product, dehydrated alfalfa meal, dried cane molasses, calcium carbonate, and a vitamin and mineral package (Vitamin A, D-3, E, B-12, riboflavin, niacin, thiamine, choline chloride, zinc, manganese, and iron). Guaranteed analysis lists crude protein at 10% minimum, crude fat at 25% minimum, Omega-3 at 12% minimum, and Omega-6 at 3% minimum.

Big Hoss 10 lb reusable bucket of equine supplement by Outlaw Nutrition
Big Hoss 10 lb reusable bucket of equine supplement by Outlaw Nutrition

What Are the Benefits?

Because it combines Omega-3 fat with a gut-focused microbial, Big Hoss is built to work across the whole horse. Outlaw Nutrition lists support for healthy weight gain and body condition (especially for hard keepers), improved feed conversion and nutrient absorption, gut and digestive integrity, strong immune function, and muscle development and maintenance. It is also formulated to support a healthy skin, coat, mane, tail, and hoof, a healthy inflammatory response, reduced lactic acid at peak performance, stress resilience, and reproductive function.

"Within the last two years I went from owning a quarter horse to a thoroughbred and was searching for a product to consistently keep weight on him between traveling, conditioning, and the colder months. Big Hoss has not only kept weight on my horse through increased work and a harsh winter but has kept him shiny even with a clipped coat." Kallan Klear, verified owner

The supplement is produced in a facility certified under the American Feed Industry Association’s Safe Feed/Safe Food program. It is non-GMO and contains no drugs, chemicals, or synthetics, and Outlaw notes it is Hisa-accredited LC-Hrms tested and compliant with USEF, FEI, Ifha, and Hiwu rules. It is shelf-stable for up to 24 months with no refrigeration needed.

Who Is It For and Where Do I Buy?

Outlaw Nutrition positions Big Hoss for “every horse, every discipline, every barn” — trail and pleasure mounts, performance horses across barrel, roping, racing, jumping, dressage, and eventing, plus saddlebreds, standardbreds, young horses, hard keepers, and seniors. Feeding is simple: top dress over feed at ½ cup per 350 lbs of body weight per day, introduce it gradually over 7–10 days, and adjust for the horse’s age, weight, and workload, with fresh water always available.

You can order Big Hoss directly from Outlaw Nutrition at outlaw-feed.com. It is offered in a 10 lb reusable bucket (with free shipping), a 25 lb bag, a 50 lb bag (about a three-month supply for one horse), and 30-day and 120-day supply packs, with pricing ranging from $59.99 to $199.99 — which Outlaw notes can come to less than $65 per month per horse.

Outlaw Nutrition founder with a buckskin horse beside Cold Milled Flax and Big Hoss feed bags
Outlaw Nutrition founder with a buckskin horse beside Cold Milled Flax and Big Hoss feed bags
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The Solution Section (FAQ)
What makes Big Hoss different from feeding plain flax?

Big Hoss starts with the same cold-milled flax Omega-3 base, but adds a dried Lactobacillus helveticus fermentation product. This microbial ingredient helps feed the healthy gut flora while working to deactivate negative bacteria throughout the digestive tract, optimizing gut function and feed conversion beyond what straight flax provides.

How much Big Hoss do I feed my horse?

Top dress Big Hoss over feed at ½ cup per 350 lbs of body weight per day. Introduce it gradually over 7–10 days and adjust the serving based on your horse’s age, weight, and workload. Always provide access to fresh water.

Is Big Hoss safe for horses with Cushing's or insulin resistance?

Outlaw Nutrition formulates Big Hoss with under 5% sugar and starch, which it states makes the supplement safe for horses with Cushing’s and insulin resistance. As with any feed change, consult your veterinarian or equine nutritionist for horses with metabolic conditions.

What sizes does Big Hoss come in and where can I buy it?

Big Hoss is sold directly through outlaw-feed.com in a 10 lb reusable bucket (free shipping), a 25 lb bag, a 50 lb bag (about a three-month supply for one horse), and 30-day and 120-day supply packs. Pricing ranges from $59.99 to $199.99.

Is Big Hoss legal for competition?

Outlaw Nutrition states Big Hoss is HISA-accredited LC-HRMS tested and compliant with USEF, FEI, IFHA, and HIWU rules. It is non-GMO and contains no drugs, chemicals, or synthetics, and is produced in a facility certified under AFIA’s Safe Feed/Safe Food program.

How is Big Hoss stored and how long does it last?

Big Hoss is naturally stabilized and shelf-stable for up to 24 months with no refrigeration required. Outlaw recommends storing it in a cool, dry space and not feeding any product that is spoiled, moldy, or insect infested.

Who makes Big Hoss?

Big Hoss is made by Outlaw Nutrition, an animal feed company founded in 2018 by Jesse James and based in South St. Paul, Minnesota. The company sources from reputable North American suppliers and mills its cold-milled flax domestically, emphasizing quality, loyalty, honesty, and integrity.

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Ann Pruitt
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InfoHorse.com