TY - CHAP M1 - Book, Section TI - VITAMINS A1 - Go, Joyce 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. PY - 2018 T2 - Poisoning & Drug Overdose, 7e AB - Acute toxicity is unlikely after ingestion of vitamin products that do not contain iron (for situations in which iron is present, see Iron). Vitamins A and D may cause toxicity, but only after chronic use. Serious toxicity has been reported in individuals attempting to mask urine drug screens by ingesting large quantities of niacin. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accessmedicine.mhmedical.com/content.aspx?aid=1174607272 ER -