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Ach4.0

Activated Charcoal Research

Mostly mechanism / observational

143 peer-reviewed studies

What the evidence says

Mostly mechanism / observational

Most Activated Charcoal studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.

Most evidence is from high-quality meta-analyses and randomised trials published 1974–2026 with a typical study size of 348 participants.

Based on 143 studies · 2 meta-analyses · 137 RCTs · 944 total participants

Confidence

High confidence

By outcome

Safety profile
Too few graded studies2 studies
Digestive healthOlder controlled trials show reduced intestinal gas and bloating after gas-producing meals, though gas-study results are mixed · Acute (around meals)
Too few graded studies1 study

Slowing down

Only 9 studies in the last 5 years · Latest meta-analysis: 2021

197420002026

1Meta-Analysis2021

Skov K, Graudal NA, Jürgens G · Basic Clin Pharmacol Toxicol (2021)

Activated Charcoal Research

Mostly mechanism / observational

The effect of activated charcoal on drug exposure following intravenous administration: A meta-analysis.

The effect of activated charcoal on drug exposure in healthy volunteers: a meta-analysis.

Antidotes for acute cardenolide (cardiac glycoside) poisoning.

Effect of Taste Additives on the Palatability of Activated Charcoal: a Systematic Review.

Systematic review on the use of activated charcoal for gastrointestinal decontamination following acute oral overdose.

Use of activated charcoal in a simulated poisoning with acetaminophen: a new loading dose for N-acetylcysteine?

Multiple-dose charcoal and whole-bowel irrigation do not increase clearance of absorbed salicylate.

Evaluation of activated charcoal-sodium sulfate combination for inhibition of acetaminophen absorption and repletion of inorganic sulfate.

Effect of Activated Charcoal on Rivaroxaban Complex Absorption.

The effects of activated charcoal on digoxin and digitoxin clearance.

Superactivated charcoal versus cholestyramine for cholesterol lowering: a randomized cross-over trial.

Phenobarbitone elimination rate after oral charcoal.

Activated charcoal alone and followed by whole-bowel irrigation in preventing the absorption of sustained-release drugs.

Activated charcoal in the treatment of hypercholesterolaemia: dose-response relationships and comparison with cholestyramine.

The effect of activated charcoal and hyoscine butylbromide alone and in combination on the absorption of mefenamic acid.

Treatment of intoxications using single and repeated doses of oral activated charcoal.

Oral activated charcoal and dapsone elimination.

Evaluation of five activated charcoal formulations for inhibition of aspirin absorption and palatability in man.

Lack of effect of oral activated charcoal on imipramine clearance.

Effects of Increased Blood Flow Rate and Oral Activated Charcoal on the Severity of Uremic Pruritus: A Randomized Crossover Clinical Trial.