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Ingredient:

Vanadium (as vanadium glycinate)

Vanadium is a trace element found in foods such as mushrooms, shellfish, black pepper, parsley, grains and grain products. The absorption of ingested vanadium is less than 5 percent 1.
  A biological role of vanadium in humans is unclear. Therefore, neither a Reference Daily Intake (RDI) nor a Daily Reference Value (DRV) has been set by the U.S. Food and Drug Administration (FDA).
  Vanadium glycinate, or vanadyl glycinate, is a form of chelated vanadium, in which a vanadium ion is bound to the amino acid glycine. It is used as a source of the trace mineral vanadium in dietary supplements.

References

  1. Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, D.C.: National Academy Press, 2002.