Activated Charcoal administration in the emergency department: Indications and tolerance
##plugins.themes.academic_pro.article.main##
Abstract
Introduction: Activated charcoal (AC), a common decontamination method in acute poisoning, is most effective when given shortly after ingestion
of an adsorbable toxin, as its high surface area enables toxin adsorption and reduces gastrointestinal absorption. We aimed to identify the most common toxins treated with activated charcoal in an intoxicated patient presenting to the emergency department (ED). Secondly, we aimed to
determine the tolerance after its administration.
Methods: A retrospective and descriptive study was conducted in the ED of Mahmoud Yaacoub Center over two years (from January 2023 to December 2024). Patients aged ≥15 years who were conscious on admission and received a single 50 g dose of AC for acute charcoal adsorbed
drug intoxication was included. Collected data encompassed demographics, intoxication characteristics, clinical and laboratory findings, and AC tolerance.
Results: We included 88 patients who received a single dose of AC. Median age was 28 years: 65.9% were female. The median delay of consultation was one hour. Most involved drugs were acetaminophen (21.6%), selective serotonin reuptake inhibitors (13.6%), metformin (12.5%), sodium
valproate (12.5%) and carbamazepine (9.1%). Cases of Co-ingestion were reported in 57% of patients. AC was administered to the patient, with good tolerance in 89% of cases. Ten patients (11%) had poor tolerance (vomiting, abdominal discomfort). Multivariate analysis identified cases of co-ingestion as significantly associated with better AC tolerance (OR =6.4, 95% CI: 1.27 – 32.19; p = 0.024).
Conclusion: In our study, the most common indications for AC ...( abstract truncated at 250 words).
Keywords:
Activated charcoal, Tolerance, intoxication, decontamination, Emergency##plugins.themes.academic_pro.article.details##

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
References
- Hoffman RS, Gosselin S, Nelson L, Lewin NA, Howland MA, Smith SW, et al. Goldfrank’s clinical manual of toxicologic emergencies.
- nd ed. New York: McGraw Hill; 2024. 774 p.
- Gaudreault P. Activated charcoal revisited. Clin Pediatr Emerg Med. 2005 June;6(2):76–80.
- Zellner T, Prasa D, Färber E, Hoffmann-Walbeck P, Genser D, Eyer F. The use of activated charcoal to treat intoxications. Dtsch Arztebl
- Int. 2019 May 3; 116:311-17.
- Toxicology AAOC, Centres EAOP, Toxicologists C. Position paper: single-dose activated charcoal. J Toxicol Clin Toxicol. 2005 Feb
- ;43(2):61–87.
- Gummin DD, Mowry JB, Beuhler MC, Spyker DA, Bronstein AC, Rivers LJ, et al. 2020 Annual report of the american association of
- poison control centers’ national poison data system (NPDS): 38th Annual Report. Clin Toxicol (Phila). 2021 Dec 2;59(12):1282–501.
- Graabak G, Næss LE, Laugsand LE, Bjørnsen LP. Intoxication cases in the emergency department at a norwegian university hospital
- –20 [Internet]. Tidsskr Nor Laegeforen. 2024 June 19 [cited 2025 Aug 13]; Available from: https://tidsskriftet.no/2024/06/kort-
- rapport/pasienter-med-forgiftning-vurdert-ved-akuttmottaket-pa-st-olavs-hospital-2019-20
- Wahba MA, Alshehri BM, Hefny MM, Al Dagrer RA, Al-Malki SD. Incidence and profile of acute intoxication among adult population
- in Najran, Saudi Arabia: A retrospective study. Sci Prog. 2021 Apr;104(2):1-19.
- Hoegberg LCG, Shepherd G, Wood DM, Johnson J, Hoffman RS, Caravati EM, et al. Systematic review on the use of activated
- charcoal for gastrointestinal decontamination following acute oral overdose. Clin Toxicol (Phila). 2021 Dec 2;59(12):1196–227.
- Hoegberg LCG, Gosselin S, Buckley NA, Wood DM, Shepherd G, Hanley J, et al. Recommendations from the Clinical Toxicology
- Recommendations Collaborative on the administration of activated charcoal in acute oral overdose. Clin Toxicol. 2026 Mar 30;1–127.
- CooperGM,Le Couteur DG, RichardsonD, BuckleyNA. A randomized clinical trial of activated charcoal for the routine management of
- oral drug overdose. QJM. 2005 Sept 1;98(9):655–60.
- Tomoda Y, Kobayashi M. An in vitro study of metformin adsorption to activated charcoal. Clin Toxicol (Phila). 2024 Apr 2;62(4):237–41.
- Leonaviciute D, Madsen B, Schmedes A, Buus NH, Rasmussen BS. Severe metformin poisoning successfully treated with simultaneous venovenous hemofiltration and prolonged intermittent hemodialysis. Case Rep Crit Care. 2018 May 8; 2018:1-4.
- Manouchehri A, Rashidian H, Zakariaei Z. Severe metabolic acidosis due to massive metformin overdose in a man: a case report. Oxf
- Med Case Reports. 2023 May;2023(5):192-4.
- Al Jawder S, AlJishi E, Al-Otaibi S, Al-Shahrani MS. All guns blazing: management and survival of massive valproic acid overdose - case
- report and literature review. Open Access Emerg Med. 2018;10:31–6.
- Crudup Iii. Recognizing and treating valproic acid toxicity: A case report. J Med Cases. 2011;2(5):185-187.
- Hazra D, Ellouze NF, Abri SA. Prevalence and outcomes of carbamazepine toxicity in the emergency department: A single-
- center retrospective study. Indian J Crit Care Med. 2024 Aug 31;28(9):866–70.
- Ghannoum M, Yates C, Galvao TF, Sowinski KM, Vo THV, Coogan A, et al. Extracorporeal treatment for carbamazepine poisoning:
- Systematic review and recommendations from the EXTRIP workgroup. Clin Toxicol (Phila). 2014 Dec;52(10):993–1004.
- Olson KR. Activated charcoal for acute poisoning: One toxicologist’s journey. J Med Toxicol. 2010 June;6(2):190–8.
- Sato RL, Wong JJ, Sumida SM, Marn RY, Enoki NR, Yamamoto LG. Efficacy of superactivated charcoal administered late (3 hours) after
- acetaminophen overdose. Am J Emerg Med. 2003 May;21(3):189– 91.
- Neuvonen PJ, Kannisto H, Hirvisalo EL. Effect of activated charcoal on absorption of tolbutamide and valproate in man. Eur J Clin
- Pharmacol. 1983;24(2):243–6.
- Neuvonen PJ, Elonen E. Effect of activated charcoal on absorption and elimination of phenobarbitone, carbamazepine and
- phenylbutazone in man. Eur J Clin Pharmacol. 1980;17(1):51–7.
- Position statement: Single-dose activated charcoal: American academy of clinical toxicology; European association of poisons
- centers and clinical toxicologists. J Toxicol Clin Toxicol. 1997 Jan;35(7):721–41.
- Mohamed F, Sooriyarachchi MR, Senarathna L, Azhar S, Sheriff MHR, Buckley NA, et al. Compliance for single and multiple dose
- regimens of superactivated charcoal: a prospective study of patients in a clinical trial. Clin Toxicol (Phila). 2007;45(2):132–5.
- Bond GR. The role of activated charcoal and gastric emptying in gastrointestinal decontamination: A state-of-the-art review. Ann
- Emerg Med. 2002 Mar;39(3):273–86.
- Holstege CP, Borek HA. Decontamination of the Poisoned Patient [Internet]. Clinical Gate; 2015 Apr 08 [updated 2025 Apr 22;
- cited 2025 Aug 13]. Available from: https://clinicalgate.com/ decontamination-of-the-poisoned-patient/.
- Isbister GK, Kumar VVP. Indications for single-dose activated charcoal administration in acute overdose. Curr Opin Crit Care.
- Aug;17(4):351–7.