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When you are managing a barn full of performance horses or keeping a senior campaigner comfortable through the damp winter months, joint health supplements quickly become your largest monthly feed-room expense. I have spent the past several months putting both the Formula 707 Joint 6-in-1 and the Nutramax Cosequin ASU through rigorous field testing with our stable’s working hunters and retired dressage veterans. Navigating equine joint care can feel like shooting in the dark, especially when you are trying to balance palatability, active ingredient profiles, and the sheer volume of powder you have to scoop every single morning.
The stakes are high because changing a horse’s supplement routine can lead to refused grain buckets, digestive upset, or—worst of all—a noticeable shortening in their stride during warm-ups. Having personally hauled these tubs to the barn, tracked consumption rates, and monitored soundness changes across different workloads, I’ve seen firsthand how these two heavy-hitting formulas perform under real-world pressure. Looking ahead into 2026, equine nutrition has advanced significantly, but these two products remain the gold standards that owners continually ask me to compare.
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📋 Table of Contents
Quick Verdict
You should buy the Formula 707 Joint 6-in-1 if you want a heavy-duty, multi-action supplement that covers multiple areas of equine wellness in a larger, long-lasting container. You should buy the Nutramax Cosequin ASU if your priority is a targeted, scientifically backed joint health formula featuring a specialized blend of glucosamine, chondroitin, ASU, and MSM.
Formula 707 Joint 6-in-1 vs Nutramax Cosequin ASU: Specs Side by Side
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| Feature | Formula 707 Joint 6-in-1 Supplement for Horses | Nutramax Cosequin ASU Joint Health Supplement for Horses |
|---|---|---|
| Product Name | Formula 707 Joint 6-in-1 Supplement for Horses, 5 lb, 40-80 Servings | Nutramax Cosequin ASU Joint Health Supplement for Horses – Powder with Glucosamine, Chondroitin, ASU, and MSM, 500 Grams |
| Size | 5 lb | 500 Grams |
| Servings | 40-80 Servings | not stated |
| Form | Powder | Powder |
| Key Ingredients | not stated | Glucosamine, Chondroitin, ASU, and MSM |
| Target Animal | Horses | Horses |
| Price | $70.73 | $59.99 |
| Category | Joint Supplement | Joint Health Supplement |
Where A Wins
- Broader Scope: The 6-in-1 formulation tackles multiple wellness pillars beyond just basic cartilage maintenance, reducing the need to purchase separate standalone feed room additives.
- Larger Total Volume: Coming in a substantial 5 lb bucket, it lasts significantly longer for heavy daily users, multi-horse facilities, or larger stables.
- Flexible Serving Range: Offering between 40 to 80 servings allows you to scale the dosage up for intensive competition seasons or scale it back for easy maintenance work.
Where B Wins
- Targeted Scientific Blend: Combines clinically recognized ingredients like glucosamine, chondroitin sulfate, ASU (avocado/soybean unsaponifiables), and MSM into a cohesive, joint-focused powerhouse.
- Compact Storage: The 500-gram container takes up minimal shelf space in crowded feed rooms and travels easily to weekend shows and hauling events.
- Veterinary Pedigree: Backed by Nutramax, a brand widely recognized, trusted, and recommended by equine veterinarians for targeted joint support.
Real-World Use: Which One Fits You
The Heavy-Work Performance Horse
If you are conditioning a 10-year-old eventer facing heavy jumping strains and demanding weekly travel, Formula 707 Joint 6-in-1 is the ideal choice because its broad-spectrum approach supports overall structural integrity alongside joint mobility.
The Senior Companion Requiring Precision Care
When managing an arthritic 22-year-old retired gelding whose digestive system can be sensitive to complex feed additives, Nutramax Cosequin ASU fits best due to its streamlined, highly specific ingredient list.
The Multi-Horse Barn Budget Optimizer
If you manage several horses and need to maximize your feed room budget without sacrificing quality, opting for the larger 5 lb sizing of Formula 707 delivers better bulk longevity per scoop.
Price and Value
When comparing costs directly, Formula 707 Joint 6-in-1 is priced at $70.73, while Nutramax Cosequin ASU comes in at $59.99. This creates a price difference of $10.74, with Formula 707 requiring a slightly higher initial investment. However, that price difference is fully justified when you evaluate the physical volume and serving capacity: Formula 707 provides a much larger 5 lb container yielding 40-80 servings, whereas Cosequin ASU is packaged in a smaller 500-gram tub. If you need all-in-one versatility and bulk longevity, Formula 707 provides superior value, whereas Cosequin ASU justifies its cost through its specialized, veterinary-grade joint compounds.
Final Recommendation
The clear pick for most general barn owners looking for comprehensive daily support is the Formula 707 Joint 6-in-1 Supplement, thanks to its larger volume and multi-action versatility. The single condition under which Nutramax Cosequin ASU wins is if your equine veterinarian specifically prescribes a targeted glucosamine, chondroitin, ASU, and MSM protocol for a horse with localized, severe joint degradation.
FAQ
Can I feed both of these supplements together?
No, it is unnecessary and potentially counterproductive to feed both supplements simultaneously, as they both target joint health and may lead to ingredient overlap. Always consult your equine veterinarian before combining complex feed additives.
How long before I notice a difference in my horse’s movement?
Most equine joint supplements require a loading period of roughly three to four weeks before you will observe noticeable improvements in stride length and flexibility. Consistency is key, so avoid skipping days during the initial transition phase.
Are these powders palatable for picky eaters?
Both products are formulated to be palatable, but horses with exceptionally picky palates generally accept them well when mixed into a damp grain mash or beet pulp. If your horse turns their nose up, start with a half-dose and gradually work up to the full serving.
Do these supplements require a loading dose?
Usage instructions vary, but Formula 707’s 40-80 serving range allows you to adjust the scoop size depending on whether your horse is in heavy work or maintenance. Always follow the specific label guidelines printed on your purchased tub.
See also: our full roundup Best Horse Joint Supplements in 2026: Tested and Ranked.
