HMB is the metabolite of the branch chain amino acid leucine, and has been shown to suppress exercise-induced muscle tissue breakdown.

Found in foods of both plant and animal origin, HMB is also normally produced in the body. (Depending on the nutritional program, from .3 grams to 1 gram of HMB is produced in the body per day.) Its precursors are the amino acid leucine and the keto acid KIC.

Certain plants such as alfalfa and plant products such as corn silage appear to have relatively large concentrations of HMB. Grapefruit and catfish also contain relatively high concentrations of this nutrient. However, similar to various vitamins and other micro-nutrients, it is extremely difficult and impractical to consume enough of these foods on a regular basis to provide the full benefits of HMB. It is probably much more practical to use a dietary supplement containing pure HMB.

Researchers are not completely certain how HMB works in the body. It appears that this amino acid metabolite supports the body's ability to minimize protein breakdown subsequent to stress such as intense exercise and it also may work to preserve the integrity of cell membranes. By minimizing protein breakdown, HMB, when combined with a resistance-training program, may cause an increase in muscle mass and strength. The exact mechanism behind HMB's effectiveness will have to be determined in future research.

Recommended use

Take 4 capsules 3 times per day with meals. Do not exceed recommended servings. Consult with a physician prior to use if you have any medical conditions. Do not use if you are pregnant or lactating.