Re-Inforcer™ is recommended to help support flexibility and maintain healthy joints, cartilage and connective tissue. May help ease aches and discomfort caused by training, competition or normal daily activity. Chelated minerals zinc, manganese and copper are added to provide antioxidant support and help maintain healthy collagen.

  • Collagen & Silicon for ligament/cartilage support
  • Devils Claw & Yucca
  • Chelated Minerals


(Enclosed measure approximates 3 oz based on density of product.)

Adult Horses (900-1,100 lbs): Provide 3 oz daily during high level stress and/or working conditions.



I do not offer MVP Products outside of the continental US.

I invite my Canadian friends to place orders with a US address for delivery.


MSM (Methylsulfonylmethane) Assists body to produce its own internal antioxidants which helps support normal inflammatory response by providing protection against oxidative stress. It is a great source of dietary sulfur, which plays an important role in maintaining the health of collagen, cartilage, hooves, hair and joint fluid.

Glucosamine is the building block of chondroitin sulfate, a specific type of polysulfated glycosaminoglycan (GAG). Current research suggests glucosamine has two beneficial actions in joints. Not only does it increase the production of new GAGs and therefore new cartilage, glucosamine has also been shown to inhibit the free radicals and enzymes that break down cartilage. This small but complex molecule has an important role in both the production and protection of joints.

Yucca is an herb native to North and Central America used by ancient and modern civilizations to address musculoskeletal discomfort. Active ingredients have been isolated from Yucca that have shown to have antioxidant properties and promote a normal inflammatory response.

Devil’s Claw is a South African herb that is used for discomfort in bone, joints, and other tissues. Data from 14 clinical trials in people conducted over the last 40 years suggest Devil’s Claw has beneficial properties in the musculoskeletal system. Because it contains “bitters” as an active ingredient, which encourages appetite but also stimulates the secretion of stomach acids, it should be used with caution in those at risk for gastric (stomach) upset. It is also recommended to check competition rulings before using products containing Devil’s Claw.

Collagen is the main structural protein found in the connective tissues of the body (skin, bones, cartilage, tendons, and ligaments). Hydrolyzed collagen protein (gelatin) is a modified form that has been broken down into smaller pieces making it easier to digest and absorb. Collagen and gelatin are ingredients used to support joint health, nourish bones and the tendons and ligaments surrounding them, and aid in recovery from exercise and injury.

Chondroitin Sulfate inhibits the effects of various enzymes that breakdown cartilage.  Building block of Hyaluronic acid (HA). Research has shown that chondroitin sulfate is bioavailable in the horse and that it appears to work synergistically with glucosamine to stimulate new cartilage production.

Hyaluronic Acid (HA) Nourishes cartilage and joint fluid, providing both lubrication and shock absorption.  Hyaluronic acid is what makes joint fluid “sticky” because it is known to protect cells in the joint, HA is especially useful during periods of high-level joint stress.

Silica is the second most plentiful element on earth, yet horses may not receive adequate levels from their diets because not all forms of silica are bioavailable and it is easily destroyed in processing. Silicon plays a role in the support/development of new bone and density health, helps maintains healthy connective tissue such as tendons and ligaments,  is required in cartilage formation and helps support the health of skin, hair and hooves.

Boswellia comes from the same resin of trees that produce frankincense. Its active ingredients are said to interfere with the enzymes that contribute to inflammation and discomfort.

Ester-C® (calcium ascorbate) is a unique patented ascorbate complex bound with calcium carbonate. Ester- C® is naturally processed in purified water without the use of alcohol or acetone solvents. This makes Ester-C® a more readily available, readily absorbed form of vitamin C. Vitamin C is an antioxidant that helps protect the tissues of the body and also important in the production of connective tissues like tendons and ligaments.   Ester-C® has up to 4X more metabolic activity than standard vitamin C (ascorbic acid).

Manganese (Mn) is a micromineral essential for bone formation, growth and reproduction. It is also essential in carbohydrate and fat metabolism. Supplementation should be considered because not all diets provide the same levels of manganese. It is among the least toxic of the trace minerals, and it plays an important role in young, growing horses as well as active performance horses.

Copper (Cu) is a micromineral required for production of normal connective tissues including tendons, ligaments, cartilage and bone. As a component of many enzyme systems, it is also involved in making iron available to the body for blood, in producing skin and coat pigments, in proper nerve signaling and in repairing antioxidants. Low copper levels in mares and foals have been implicated in developmental orthopedic disease (DOD) including osteochondrosis.


I was wondering how this compared to Matrix 5 H/A? I have a 3 year old mare with some tendon issues and the vet suggested putting her on a supplement for it and I saw that some people preferred this product over the other for tendon problems.

MVP: Both the Matrix 5 H/A & Re-Inforcer EQ have high levels of joint support ingredients (glucosamine, chondroitin sulfate, MSM, and HA) while Re-Inforcer also contains soft tissue support (silica and collagen).  If you’re not sure which may be the best option for your mare, we recommend working with your veterinarian to decide which may be the most beneficial for her individual needs.


If I give my horse the Re-Inforcer, does that mean I can stop giving him MSM?

MVP: Re-Inforcer EQ provides 12,000mg of MSM, so additional supplementation of this ingredient is generally not necessary.


Is this legal to feed horses competing at AQHA events?

MVP: Re-Inforcer EQ does contain the herb Devil’s Claw, which is listed as a forbidden substance under USEF rules. Therefore we do not recommend using this supplement for horses who show in AQHA or USEF competitions.

Additional information

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Re-Inforcer EQ 6 lb, Re-Inforcer EQ 12 lb, Re-Inforcer EQ 24 lb



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