Chromium is an essential trace mineral, and is a component in the metabolism process. Specifically, it serves as a partner to insulin in the transportation and breakdown of glucose. It’s typically marketed as chromium picolinate, which combines chromium with picolinate, a chelating agent.my doctor told me i can add this to my daily regime to help keep my sugar levels under control and it works not too bad i take 3 a day 1 in the morning and 2 at night at 200mcg i dont usually take supplements but since it was suggested by my doctor.and at $2.95 a bottle at walmart its a great price.