Formulated to support optimal performance.

Myo-Guard is a blend of ingredients chosen because of their ability to support healthy muscle activity. When muscles function properly, horses are able to perform to their highest potential.

Natural Vitamin E

Vitamin E is unique among vitamins in that it is not required for a specific metabolic function. As alpha-tocopherol, vitamin E’s major function appears to be the body’s most important fat-soluble antioxidant. A powerful antioxidant, vitamin E supports healthy cell membranes by reducing free radical-induced damage. Thus, vitamin E is notably essential for the proper function of the reproductive, muscular, nervous, circulatory, and immune systems. Natural is best! Unlike synthetic vitamin E, natural vitamin E is preferentially absorbed and transported throughout the body. It is also retained in tissues for longer periods of time, making it readily available when horses need it most. Myo-Guard contains 1000 IU of natural vitamin E per ounce.

Vitamin C

This antioxidant supports healthy tissues by scavenging oxygen radicals from aqueous solutions, helping to reduce free radical damage. In addition, vitamin C has been found to aid in the regeneration of vitamin E in the body. Once vitamin E inactivates free radicals, it is usually no longer useful to the body. In the presence of vitamin C, however, the antioxidant properties of vitamin E can be restored. Myo-Guard provides 1500 mg of vitamin C (as ascorbic acid) per ounce.


Selenium is required for the production of glutathione peroxidase, an enzyme that neutralizes peroxides so they can no longer damage muscle cell integrity by reacting with the cells’ lipid membrane. Selenium works in concert with vitamin E to support a reduction in oxidative stress. One ounce of Myo-Guard provides 1 mg of selenium.


Magnesium is a mineral that supports proper muscle and nerve function. During exercise, magnesium, as well as other electrolytes, is lost in sweat. Much of the body’s magnesium is stored in the skeleton. The transfer from bone to bloodstream is not efficient enough for rapid replacement of magnesium losses through heavy sweating. Therefore, supplementing an equine athlete’s ration with magnesium may be necessary for optimal muscle function. Myo-Guard supplies 3000 mg of magnesium per ounce.


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