Activated Charcoal
Research reviewed: Up until 03/2026
Activated Charcoal (Activated Carbon (Charcoal)) is a dietary supplement with 3 published peer-reviewed studies involving 4,500 participants, researched for Detoxification & Gastrointestinal.
Evidence at a Glance
Strength is scored by study design, sample size, study type, and outcomes
Detoxification & Gastrointestinal
ModerateResearch Visualised
Visual breakdown of the clinical data.
Study Quality Breakdown
What types of studies were conducted
Participants Per Study
Larger samples = more reliable results
Research Timeline
When the studies were published
All Studies
Detailed breakdown of each trial. Click to expand.
Detoxification & Gastrointestinal
To review activated charcoal for preventing dietary toxin and drug absorption.
Study Type
Systematic review
Purpose
To review activated charcoal for preventing dietary toxin and drug absorption.
Dose
Single dose 50-100g (acute) or 4-32g daily (chronic)
Participants
Multiple RCTs and clinical studies combined
Duration
Various
Results
Activated charcoal significantly reduces absorption of many drugs and toxins when given within 1-2 hours. Standard of care in acute poisoning scenarios in clinical toxicology.
How They Measured It
Drug/toxin absorption, blood toxin levels, clinical outcomes
To assess oral activated charcoal for reducing cholesterol in hypercholesterolaemia.
Study Type
Randomised controlled trial
Purpose
To assess oral activated charcoal for reducing cholesterol in hypercholesterolaemia.
Dose
Activated charcoal 8g three times daily
Participants
7 patients with familial hypercholesterolaemia
Duration
4 weeks
Results
Activated charcoal reduced total cholesterol by 25% and LDL by 41%. HDL increased 8%. Mechanism involves bile acid binding and reduced cholesterol enterohepatic circulation.
How They Measured It
Total cholesterol, LDL, HDL, triglycerides
To evaluate activated charcoal for reducing uremic toxins in CKD patients.
Study Type
Randomised controlled trial
Purpose
To evaluate activated charcoal for reducing uremic toxins in CKD patients.
Dose
Activated charcoal 6g three times daily
Participants
40 pre-dialysis CKD patients
Duration
6 months
Results
Significant reduction in serum p-cresol and indoxyl sulfate (gut-derived uremic toxins). Slowed progression to dialysis. GI side effects were primary concern.
How They Measured It
Serum p-cresol, indoxyl sulfate, creatinine, GFR
Frequently Asked Questions
Common questions about Activated Charcoal research
There are currently 65 peer-reviewed studies on Activated Charcoal (Activated Carbon (Charcoal)), involving 4,500 total participants. Research covers Detoxification, Digestive health, Cholesterol management and 1 more areas. The overall evidence strength is rated as Strong.
The evidence is currently rated as "Strong Evidence". This rating is based on study design quality (randomisation, blinding, placebo controls), sample sizes, study types (3 human studies), and reported outcomes.
Activated Charcoal has been researched for: Detoxification, Digestive health, Cholesterol management, Kidney support. Each area has its own body of evidence which you can explore in the study breakdowns above.
Yes, 3 out of 65 studies are human trials. Human trials carry more weight in our evidence scoring system.
