Is Activated Charcoal Safe?

US rules depend on the use. Under 21 CFR 310.545, the FDA lists activated charcoal among antidiarrheal ingredients for which, based on evidence currently available, there are inadequate data to establish general recognition of safety and effectiveness. The listing for that group took effect April 19, 2004, or April 18, 2005 for products with annual sales under $25,000.

In poisoning care, FDA professional labeling rules in 21 CFR 343.80, written for health professionals rather than the general public, say treatment of aspirin overdose consists primarily of supporting vital functions, increasing salicylate elimination and correcting the acid-base disturbance. They say that after lavage or emesis, activated charcoal given as a slurry is beneficial if less than 3 hours have passed since ingestion, and that charcoal adsorption should not be used before emesis and lavage.

Wellness claims draw scrutiny. In a July 23, 2020 warning letter, the FDA cited a company claim promoting activated charcoal as a hangover prevention pill. It said a statement claims to prevent disease if it claims an effect on the characteristic signs or symptoms of a specific disease, and that a hangover is a sign or symptom of alcohol intoxication, a disease.

In the EU, Regulation (EU) No 432/2012, applying from December 14, 2012, authorises the claim that activated charcoal contributes to reducing excessive flatulence after eating, only for food containing 1 g of activated charcoal per quantified portion, with consumers told the effect comes from 1 g taken at least 30 minutes before and 1 g shortly after the meal.