Many chromium salts are industrial hazards. 51Cr has a half-life of approximately 28 days. 4, 5 A number of naturally occurring isotopes have been identified, the most common of which is 52Cr (approximately 84% of the isotopes). Trivalent chromium is the most stable oxidation state for chromium, and this form is found in common nutritional supplements, generally as the picolinate salt. Hexavalent chromium is the highest oxidation state of elemental chromium. The element may occur in compounds in di-, tri-, or hexavalent forms. ChemistryĬhromium has an atomic weight of 51.996. The effectiveness of these products has not been established, although they represent sources of chromium. 3 As chromium is considered to be important for normal glucose metabolism, a number of over-the-counter products promote the use of chromium, alone or in combination with glucose tolerance factor, to improve carbohydrate utilization. Synthetically-produced 51Cr is used as a tracer in various hematologic disorders and in the determination of blood volume. 2 Related/similar drugs ferrous sulfate, ergocalciferol, folic acid, thiamine, Zinc, FeroSul HistoryĬhromium is a steel-gray lustrous metal that is important as an additive in the manufacture of steel alloys (chrome steel, chrome-nickel steel, stainless steel) and greatly increases the durability and corrosion resistance of these metals hence its use in metal prosthetic implants. Good dietary sources of chromium include brewer's yeast, liver, potatoes with skin, beef, fresh vegetables, and cheese. The organic form of chromium exists in a dinicotino-glutathionine complex in natural foods, which is better absorbed than the inorganic form. 1 Industrially, it is obtained from chrome ore, among other sources. SourceĬhromium (Cr) is abundant in the earth's crust and is found in concentrations ranging from 100 to 300 ppm. However, at higher dosages, such as those used in trials evaluating the efficacy of chromium in glycemic control, concern exists for potential genotoxic effects. No risk of genotoxicity at appropriate dosages over the short-term exists for chromium as a dietary supplement. Ingestion or exposure to certain forms of chromium may cause or contribute to GI irritation and ulcers, dermatitis, hemorrhage, circulatory shock, and renal tubule damage. Limited animal experimentation showed skeletal and neurological defects in the offspring of mice fed chromium picolinate. Information regarding safety and efficacy in pregnancy and lactation is lacking. Renal failure may be considered a relative contraindication. The potential for genotoxic effects exists at higher dosages. Daily dosages used in clinical trials for periods of up to 9 months range as follows: brewer's yeast up to 400 mcg/day chromium chloride 50 to 600 mcg/day chromium nicotinate 200 to 800 mcg/day chromium picolinate 60 to 1,000 mcg/day. The currently accepted value for chromium dietary intake is 25 mcg/day for women and 35 mcg/day for men. The role of supplemental chromium remains controversial. Last updated on Nov 22, 2022.Ĭhromium supplementation has been studied for a variety of indications, especially diabetes and weight loss, but clinical studies have shown inconsistent results. Common Name(s): Chromium chloride, Chromium nicotinate, Chromium picolinate
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