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OptiMSM®--Made in USA! The Best!

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HorseTech has used one, and only one, source of MSM since the day that we opened--OptiMSM® from Bergstrom Nutrition (formerly Cardinal Nutrition). While Bergstrom offers a less-expensive MSM alternative targeted for the animal markets (PurforMSM®), HorseTech continues to offer only the very best MSM available anywhere--OptiMSM®. Fully licensed and made to the original patent, OptiMSM is made for human consumption right here in the U.S.A.--it doesn't get any better!

Unlike most imported MSM, HorseTech's OptiMSM® is made with a unique distillation process where contaminants are "distilled" away from the final product. You'll note that the distilled product is a fine white powder, whereas the cheaper, evaporated product will generally be a larger, less consistent "flake" material. Further, each and every batch of OptiMSM® is tested right here in the U.S. for heavy metal contaminants AND microbiological contaminants. This is an important part of the quality assurance program! Look for the OptiMSM® logo!

OptiMSM Logo

Directions for Use

Administer orally to mature horses weighing 1000 lbs+ at the rate of 10 grams (one rounded 11cc scoop) per day or as directed by your local, attending veterinarian. Each 11cc scoop will provide approximately 10 grams (10,000 mg) of methylsulfonylmethane (MSM).

Adjust dosage rate proportionately (based on weight) for heavier or lighter breeds. Not recommended for use during gestation or lactation. Consult local attending veterinarian prior to use.


Active Ingredients
Per 10 gram Serving
Methylsufonylmethane (OptiMSM®)
10,000 mg

Inactive Ingredients

Amorphous Silicon Dioxide (flow agent 0.5%)

Labeling, Warnings, Cautions, & Misc.

For use in horses only. Cautions: Safe use in pregnant animals or animals intended for breeding has not been proven. If animal’s condition worsens or does not improve, stop product administration and consult your veterinarian. Warnings: For animal use only. Keep out of reach of children and other animals. In case of accidental overdose, contact a health professional immediately. This product should not be given to animals intended for human consumption.

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