Metabolic Factors is a combination of 3 nutrients that are essential for normal metabolism. Choline is a methyl donor in anabolic biosynthesis, Carnitine is required for the utilization of fat for energy, and chromium is required for normal hormonal regulation of metabolism. Choline and carnitine have been shown to work synergistically in the control of fat metabolism. Per 6 tablets Metabolic Factors provides Choline (2000 mg), Carnitine (500 mg), and Chromium (200 mcg). 120 tablets per bottle.