Episode 944: Colchicine Overdose

Contributor: Aaron Lessen, MD Educational Pearls: Colchicine is most commonly used for the prevention and treatment of gout There is research investigating the anti-inflammatory and cardioprotective effects of colchicine  This drug has a narrow therapeutic index: a small margin between effective dose and toxic dose Colchicine overdoses can be unintentional or intentional and are associated with poor outcomes Phase 1: 10 - 24 hours after ingestion Patient looks well but may have mild symptoms mimicking gastroenteritis Phase 2: 24 hours - 7 days after ingestion Multiple organ dysfunction syndrome (MODS) Phase 3: recovery is usually within a few weeks of ingestion Treatment for colchicine overdose Treat early and aggressively Gastrointestinal decontamination with activated charcoal and orogastric lavage  Dialysis and ECMO for MODS treatment References Finkelstein Y, Aks SE, Hutson JR, Juurlink DN, Nguyen P, Dubnov-Raz G, Pollak U, Koren G, Bentur Y. Colchicine poisoning: the dark side of an ancient drug. Clin Toxicol (Phila). 2010 Jun;48(5):407-14. doi: 10.3109/15563650.2010.495348. PMID: 20586571. Gasparyan AY, Ayvazyan L, Yessirkepov M, Kitas GD. Colchicine as an anti-inflammatory and cardioprotective agent. Expert Opin Drug Metab Toxicol. 2015;11(11):1781-94. doi: 10.1517/17425255.2015.1076391. Epub 2015 Aug 4. PMID: 26239119. Summarized by Meg Joyce, MS1 | Edited by Meg Joyce & Jorge Chalit, OMS3 Donate: https://emergencymedicalminute.org/donate/