RT Book, Section A1 Blanc, Paul D. A2 Olson, Kent R. A2 Anderson, Ilene B. A2 Benowitz, Neal L. A2 Blanc, Paul D. A2 Clark, Richard F. A2 Kearney, Thomas E. A2 Kim-Katz, Susan Y. A2 Wu, Alan H. B. SR Print(0) ID 1179991839 T1 MANGANESE T2 Poisoning & Drug Overdose, 7e YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9780071839792 LK accessmedicine.mhmedical.com/content.aspx?aid=1179991839 RD 2022/05/24 AB Although manganese (Mn) is an essential trace nutrient, intoxication is caused by chronic overexposure. Sources of inorganic manganese exposure include mining, metal working, smelting, foundries, and welding. There is a potential link between organic manganese fungicides (Maneb and Mancozeb) and chronic neurologic toxicity. An organic manganese gasoline additive, methylcyclopentadienyl manganese tricarbonyl (MMT) is in limited use in the United States and in wider use elsewhere. Parenteral exposure to inorganic manganese can occur through injection drug abuse of potassium permanganate–adulterated substances, through manganese-containing total parenteral nutrition, and administration of the manganese-releasing pharmaceutical mangafodipir.