Chromium picolinate 200 mcg vegetable capsules is an important trace mineralchromium stimulates enzymes involved in glucose metabolism and improves the effectiveness of insulin in its relationship with glucose it competes with iron to transport protein in the blood and is involved in rnaprotein binding ability chromium is poorly absorbed 5 bioavailability it is stored in the spleen testicles kidneys pancreas heart lungs and brain helps stabilize nucleic acids dna and rna against stru