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SynOsteon and SynOsteon Maintenance — Barrel Racing (SynNutra Equine has created 2 highly effective joint products to support joint…)

SynOsteon and SynOsteon Maintenance

SynNutra Equine has created 2 highly effective joint products to support joint health, comfort and

Got a performance horse with joint discomfort and want drug-free herbal support?

Reviewed by Ann Pruitt, InfoHorse.com · Updated May 2026
SynOsteon and SynOsteon Maintenance — Barrel Racing (SynNutra Equine has created 2 highly effective joint products to support joint…)
SynOsteon and SynOsteon Maintenance — Barrel Racing (SynNutra Equine has created 2 highly effective joint products to support joint…)
SynOsteon and SynOsteon Maintenance
SynNutra Equine has created 2 highly effective joint products to support joint health, comfort and well being.

About SynNutra Equine

SynNutra Equine is a company committed to the research and development of effective products designed to treat performance horse medical issues. Our products never include drugs of any kind, but instead incorporate all-natural, field-tested herbal ingredients and endogenous nutrients.

After years of extensive research and consultation with scientists, pharmacologists and herbologists, SynNutra Equine has developed an approach to equine health that combines the benefits of both western science and eastern medicine. The result is Synergistic Neutraceuticals- a synergistic combination of endogenous and herbal nutrients. Our problem-based approach helps the equine community by managing some of the most important health issues typical of performance horses.

SynNutra Equine is a business with roots firmly planted in equine veterinary medicine. Our products are formulated, developed and tested in our own California facility so we can ensure that our clients receive products they can trust every time. Here at SynNutra Equine, we are as committed to and as serious about your horse’s health and performance as you are!

SynOsteon
Healthy bone requires a collagen matrix for flexibility as well as a support medium for calcium and phosphorus deposition. SynOsteonis formulated to support the development of a healthy frame for healthy bone. Nutrients such as choline, inositol and silicon are key in building and maintaining collagen, while menaquinone (vitamin K2) and β-glucans stimulate calcium deposition in bone. Vitamin D is necessary for nutritional calcium absorption. Icariins from Herba epimedii (epimedium) limit osteoclastic bone resorption and promote osteoblast activity. SynOsteon is also a rich source of calcium and magnesium.

SynOsteon Maintenance

When bone-fit horses have extended periods of rest they start reabsorbing calcium from their bones. They can start reabsorbing significant calcium in only a few weeks. This bone resorption can lead to very serious humeral and tibial stress fractures when training is resumed. SynOsteon Maintenance is formulated to inhibit osteoclast activity and stimulate osteoblast activity so healthy bone density is maintained during these periods of rest.

What Horses Need SynOsteon Maintenance?


• Bone fit horses entering periods of rest exceeding three weeks • Resting horses should take Synosteon Maintenance until they resume galloping.

SynOsteon Was Developed to Help Manage Bucked Shins and Stress Fractures of the Shins, Tibia and Humerus. Bucked shins and stress fractures of the shin, tibia and humerus have plagued racehorses and racehorse trainers for many years. During the months of rigorous training a racehorse needs to achieve racing fitness, the stress cycling of the long bones often overcomes the body’s ability to remodel, resulting in bucked shins, tibial stress fractures and humeral stress fractures. These injuries are not only dangerous to the racehorse, they also cause a significant economic burden to the owner and trainer. SynOsteon contains a unique blend of nutrients to support strong, healthy bone development.

Healthy bone requires a collagen matrix for flexibility as well as a support medium for calcium and phosphorus deposition. SynOsteonTM is formulated to support the development of a healthy frame for healthy bone. Nutrients such as choline, inositol and silicon are key in building and maintaining collagen, while menaquinone (vitamin K2) and β-glucans stimulate calcium deposition in bone. Vitamin D is necessary for nutritional calcium absorption. Icariins from Herba epimedii (epimedium) limit osteoclastic bone resorption and promote osteoblast activity. SynOsteon is also a rich source of calcium and magnesium.

SynOsteonTM Was Designed for These Three Types of Horse Populations


  1. Young unfit racehorses in early training. These horses should be supplemented daily when they begin training and continue through the time they are racing at full distance. In a population of more than 100 two and three-year-olds in the first year that SynOsteon was available, none stopped training for bucked shins, tibial stress fractures or humeral stress fractures.
  2. Racehorses that have had significant time out of training (over one month) that were not supplemented with SOM (SynOsteon Maintenance). The longer fit horses are out of training the more calcium phosphate they resorb from their bones. This is the reason for the all too common tibial and humeral stress fractures that develop during the retraining phase after horses have been turned out. By supplementing these horses when they begin training fractures of the tibia and humerus can be avoided.
  3. Racehorses that have developed bucked shins, tibial or humeral stress fractures. For all of these conditions it is important for your veterinarian to evaluate radiographs to know if there is a cortical fracture or just a callus. With shins the protocol is generally to walk for a few weeks, jog for a few weeks and resume normal training. For most bucked shin cases no other therapy is needed, although shock wave therapy is often used. For the tibia and humerus without a visible fracture the protocol is to walk until the horse is sound at the trot (~2weeks), then one more week. Jog a few weeks and if sound start gradually introducing gallops. Cortical fractures will require more walking but these average about 5.5 months to the first start back. This is a general protocol and should be adjusted by an experienced veterinarian to fit the individual racehorse’s condition.

Order SynOSteon or SynOsteon Maintenance Today!

Your horse is depending on you for their care, health and well being. Make sure that their joints are well cared for, protected and nourished. If you need help deciding which product is right, we are happy to talk to you and help you with that decision. We understand horses and how to keep them performing well. Your calls are welcome and we are excited to take your order and talk to you about your horses today!


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The Solution Section (FAQ)
What is SynNutra Equine?
SynNutra Equine is a company committed to the research and development of effective products designed to treat performance horse medical issues. Its products never include drugs of any kind, instead using all-natural, field-tested herbal ingredients and endogenous nutrients. The company has roots firmly planted in equine veterinary medicine, and all products are formulated, developed, and tested in its own California facility.
What does SynOsteon do for a horse's bones?
SynOsteon is formulated to support the development of a healthy frame for healthy bone. Healthy bone needs a collagen matrix for flexibility plus a support medium for calcium and phosphorus deposition, and SynOsteon supplies nutrients like choline, inositol, and silicon to build collagen, with menaquinone (vitamin K2) and beta-glucans to stimulate calcium deposition. It also includes vitamin D for calcium absorption and is a rich source of calcium and magnesium.
Can a supplement help with bucked shins and stress fractures?
SynOsteon was developed to help manage bucked shins and stress fractures of the shins, tibia, and humerus. During rigorous training, the stress cycling of the long bones often overcomes the body's ability to remodel, leading to these injuries. SynOsteon contains a unique blend of nutrients to support strong, healthy bone development. In a population of more than 100 two- and three-year-olds in the first year SynOsteon was available, none stopped training for bucked shins, tibial, or humeral stress fractures.
Why do resting horses lose bone density, and what is SynOsteon Maintenance for?
When bone-fit horses have extended periods of rest, they start reabsorbing calcium from their bones, and can reabsorb significant calcium in only a few weeks. This bone resorption can lead to very serious humeral and tibial stress fractures once training resumes. SynOsteon Maintenance is formulated to inhibit osteoclast activity and stimulate osteoblast activity so healthy bone density is maintained during rest.
Which horses need SynOsteon Maintenance?
It is intended for bone-fit horses entering periods of rest exceeding three weeks. Resting horses should take SynOsteon Maintenance until they resume galloping. Keeping bone density up during downtime helps avoid the tibial and humeral stress fractures that commonly develop during the retraining phase after a horse has been turned out.
When should young racehorses start on SynOsteon?
Young, unfit racehorses in early training should be supplemented daily when they begin training and continue through the time they are racing at full distance. This covers the months of rigorous work needed to reach racing fitness, when long-bone stress is highest. SynOsteon supports bone remodeling through that demanding build-up period.
How does SynOsteon's approach differ from a drug-based product?
SynNutra Equine combines the benefits of both western science and eastern medicine after years of research and consultation with scientists, pharmacologists, and herbologists. The result is Synergistic Neutraceuticals, a synergistic combination of endogenous and herbal nutrients, with no drugs of any kind. For example, icariins from Herba epimedii (epimedium) limit osteoclastic bone resorption and promote osteoblast activity.
How do I order, or get help deciding between SynOsteon and SynOsteon Maintenance?
If you need help deciding which product is right, SynNutra Equine is happy to talk with you and help you make that decision. You can call 800-725-6940 to place an order or ask questions about your horses, or visit https://synnutraequine.com/about-synnutra-equine/ to learn more. They understand horses and how to keep them performing well, and welcome your call.

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Ann Pruitt
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InfoHorse.com