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FORCO® — Health (Nutrients for a balanced digestive system, from mouth to colon)

FORCO®

Nutrients for a balanced digestive system, from mouth to colon.

Need a digestive fortifier that feeds the entire bacterial population of your horse's gut?

Reviewed by Ann Pruitt, InfoHorse.com · Updated May 2026
The Frank family of FORCO standing together on their Colorado horse ranch
The Frank family of FORCO standing together on their Colorado horse ranch

A horse can only thrive on what it actually digests. You can pour the best hay, grain, vitamins and minerals into the feeder, but if the digestive tract is not breaking that feed down and pulling the nutrients out, much of it passes straight through. FORCO® Feed Supplement is a Digestive Fortifier built around that exact problem: it is a source of nutrients that feed and nurture the bacterial and microbial populations living throughout the digestive scope, so the horse can finally get more out of the ration you are already paying for.

Full lineup of FORCO Feed Supplement Digestive Fortifier pails, bags and boxes
Full lineup of FORCO Feed Supplement Digestive Fortifier pails, bags and boxes

Unlike products that simply add more vitamins or minerals on top of the diet, FORCO® works on the gut itself. It is made from pure fermentation products with no live yeast organisms, no carriers, no fillers, and no supplemental vitamins, minerals or proteins, making it one of the few genuinely pure, all-natural digestive products on the market.

What Makes FORCO® a Whole-Tract Digestive Fortifier?

Most digestive aids target only the foregut. FORCO® is formulated to be effective across the entire alimentary system, from the mouth all the way through the colon. That whole-tract reach matters because so much of a horse's nutrient absorption happens deep in the hindgut, in the cecum and colon, where fiber is fermented and nutrients are finally taken up.

The formula combines highly effective yeast cultures and digestive enzymes refined over more than 25 years of research. Together they create a synergistic effect that makes the fermentative quality of the supplement greater than its individual parts, supporting the digestion of fibrous hay and grain, the fermentation of soluble carbohydrates, protein fermentation and amino-acid formation, the production of the horse's own digestive enzymes, and the synthesis of vitamins including the B-complex group and vitamin K.

Bonita the bay broodmare in healthy body condition after one month on FORCO
Bonita the bay broodmare in healthy body condition after one month on FORCO

Which Horses Benefit Most From Better Digestion?

FORCO® is often the product owners reach for when nothing else has worked. By supporting healthier, more complete digestion, it is used to help horses struggling with poor appetite and weight gain, the hard keeper who cannot seem to hold condition, and digestive upsets including colic, diarrhea, compaction and founder. Because better fermentation means the horse extracts more energy and nutrition from the same hay and grain, FORCO® also improves overall feed efficiency, so the diet you are already feeding simply goes further.

A Family Company Built on Forage, Since 1982

FORCO® traces back to 1982, when David and Lynette Frank started a hay-conditioning business on Colorado's eastern plains near Flagler, developing products to keep mold out of higher-moisture baled hay. The name FORCO comes from "forage conditioner." When the Franks began running a Thoroughbred and Quarter Horse racing stable in 1984, they turned that forage research toward the horse's digestive system, and after seeing the results in their own training horses they brought FORCO® Feed Supplement to market in 1986. As founder Dave Frank puts it, nutrition comes in two parts: what you feed in the trough, and the gut health that decides how much of it the horse can actually use. That family-run, results-first philosophy still defines the company today.

Bay mare eating from a feed pan in good flesh after weeks on FORCO Feed Supplement
Bay mare eating from a feed pan in good flesh after weeks on FORCO Feed Supplement
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The Solution Section (FAQ)
What exactly is FORCO® Feed Supplement?

FORCO® is a Digestive Fortifier: a source of nutrients that feed and nurture the bacterial and microbial populations throughout a horse's digestive tract. Rather than adding more vitamins or minerals to the diet, it helps the gut digest and absorb the feed the horse is already eating.

How is FORCO® different from a typical yeast or probiotic supplement?

Many products work only on the foregut. FORCO® is designed to be effective across the entire alimentary system, from the mouth through the colon, including the cecum and colon where much of a horse's fiber digestion and nutrient absorption actually happen.

What is FORCO® made from?

It is made from pure fermentation products built around highly effective yeast cultures and digestive enzymes. It contains no live microbial yeast organisms, no carriers, no fillers, and no supplemental vitamins, minerals or proteins, which makes it one of the few pure, all-natural digestive products available.

What problems do owners use FORCO® to help with?

Owners turn to FORCO® for poor appetite and weight gain, hard keepers that struggle to hold condition, and digestive issues such as colic, diarrhea, compaction and founder. It is frequently described as the product of last resort when other approaches have not delivered.

How does FORCO® improve feed efficiency?

By supporting fuller fermentation and digestion across the whole tract, FORCO® helps the horse extract more energy and nutrition from the same hay and grain. The result is better feed efficiency, so the diet you are already feeding goes further.

How does FORCO® support vitamin and amino-acid production?

Through its yeast cultures and digestive enzymes, FORCO® supports the horse's own production of digestive enzymes, the fermentation of protein into amino acids, and the synthesis of vitamins including the B-complex group and vitamin K, all generated within a healthier digestive system.

How long has FORCO® been around?

The company was founded in 1982 by David and Lynette Frank as a hay-conditioning business near Flagler, Colorado. They adapted that forage research into an equine digestive supplement and launched FORCO® Feed Supplement in 1986. It remains a family-owned, results-driven business.

What does the name FORCO® mean?

FORCO comes from "forage conditioner," reflecting the company's roots in keeping higher-moisture baled hay free of mold before that same research was redirected toward equine digestive health.

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