A joint supplement can be a key element of your horse’s joint maintenance plan. Supplements can support joint health, helping to keep your horse moving comfortably and at his best. But joint supplements aren’t all made the same; the ingredients used can have a significant impact on performance and results.

BRL Equine develops high-performance supplements validated through clinical research, and we put that same effort into developing our new joint supplement, Flexify-HA. If you’re looking for a joint supplement that gives you real results, Flexify-HA delivers — and that starts with its ingredients.

Why Flexify-HA Works

Flexify-HA is formulated with hyaluronic acid, methylsulfonylmethane (MSM), and ascorbic acid (Vitamin C). These ingredients are clinically proven to support equine joint health, and our formula contains an optimal blend to maximize results.

Hyaluronic Acid

Hyaluronic acid naturally occurs in and around your horse’s joints, and it plays multiple roles in their function. The joint capsule, a fluid-filled sac surrounding each joint, is filled with synovial fluid that allows the bones to pass over each other easily. This fluid has an anti-inflammatory action that contributes to the joint’s function and comfort

Hyaluronic acid is a key component of the synovial fluid, responsible for the fluid’s lubrication and viscosity properties. It is also found in your horse’s joint cartilage.

Hyaluronic acid is clinically proven to be an essential component of joint health and joint supplements. According to the report, The Use of Equine Nutritional Supplements in Finland, hyaluronic acid helps to lubricate joint cartilage and keep synovial fluid at the proper viscosity. The report found that horses supplemented with hyaluronic acid experienced improved joint cartilage development. Horses that received oral hyaluronic acid after undergoing arthroscopic surgery also experienced less fluid buildup in the synovial joint.


MSM plays an essential role in helping to minimize joint inflammation. If your horse’s joint capsule is damaged, the body responds by inflaming the joint to help it heal. That inflammation can lead to increased pain and stiffness, but MSM’s anti-inflammatory effect can help to counteract it.

MSM occurs naturally and is quickly absorbed by the body. According to the report mentioned earlier, MSM has a protective effect for joint cartilage, so it’s frequently included in joint products intended to help reduce the symptoms of arthritis.

MSM may be particularly useful when paired with complementary ingredients. According to the report, Methylsulfonylmethane: Anti-inflammatory Actions and Usage for Arthritic Conditions, pairing MSM with boswellic acid or type II collagen has been effective in reducing arthritis pain.

Vitamin C

There’s another MSM combination that’s been effective in supporting joint health in horses: MSM and Vitamin C. You’ll find both of these ingredients in Flexify-HA.

The aforementioned Finland report references a study examining the use of MSM and Vitamin C supplementation to reduce oxidative stress in jumping horses. Horses that were supplemented daily with MSM and Vitamin C were better protected against oxidative stress than the horses that didn’t receive supplements, or that received only MSM supplementation. Paired together, MSM and Vitamin C may be able to work together to protect joints from oxidative stress, helping your horse’s body heal itself after a hard workout.

Additional Reasons to Trust Flexify-HA

Clinically proven ingredients are an important foundation of any joint supplement, but there are additional important reasons to try Flexify-HA. Like all BRL Equine supplements, Flexify-HA is designed with your competition horse in mind. It won’t test positive and is free of banned substances, like Devil’s Claw.

Flexify-HA is also backed by BRL Equine’s 90-day money-back guarantee. If you don’t see results from this joint supplement, just return it for your money back. Between clinically tested and proven ingredients, a formula that won’t test positive and a money-back guarantee, there are plenty of reasons to try Flexify-HA.

Kiia Greta Isotalo, magistrikraad. The use of equine nutritional supplements in Finland (Hobuste toidulisandite kasutamine Soomes), Eesti Maaülikool. 2019, (juh) Toomas Orro. https://dspace.emu.ee/xmlui/bitstream/handle/10492/4914/Kiia_Isotalo_2019_VM_fulltext.pdf?sequence=1&isAllowed=y

Matthew Butawan, Marievan der Merwe, Rodney L.Benjamin, Richard J.Bloomer. Methylsulfonylmethane: Anti-inflammatory Actions and Usage for Arthritic Conditions. Author links open overlay pane2019 February 8, 553-573. https://www.sciencedirect.com/science/article/pii/B9780128138205000325