nature's sunshine chromium gtf 300mcg, 90 tablets nature's sunshine chromium, gtf is a trace mineral that plays a role in maintaining blood sugar levels that are already within the normal range. each glucose tolerance factor (gtf) molecule, a hormone-like compound, requires chromium as its central atom. gtf is thought to work with insulin to transport glucose from the blood into the cells. the liver also needs chromium to manufacture fatty acids, lecithin, cholesterol and lipoproteins. chromium may positively affect blood fat levels and the liver filtration process. processing destroys much of the chromium content in foods. each tablet of gtf chromium contains 300 mcg of chromium amino acid chelate and chromium nicotinate in a base of horsetail herb, red clover tops and yarrow flower. take 1 tablet daily with a meal.