Digestion

Activated Charcoal

Porous carbon used for certain poisonings and occasional gas relief, but daily use offers little proven benefit and many drug interactions.

Activated Charcoal

Porous carbon used for certain poisonings and occasional gas relief, but daily use offers little proven benefit and many drug interactions.

score

evidence

Caution

risk

Proven Benefits

01Treats certain acute poisonings

02May reduce gas and bloating

03May lower LDL cholesterol

Chemical Forms

Recommended

Activated charcoal powder
Activated charcoal capsules

Avoid

Charcoal briquettes or BBQ charcoal (not food-grade, contain toxins and fillers)

Expert Note

Medical-grade activated charcoal is purified and activated to maximize adsorption. Skip briquettes or BBQ charcoal because they are not food-grade and may contain binders or contaminants.

Protocol

Amount

500 mg - 2 g

Frequency

As directed by clinician or poison control; for gas, 1-3 times daily

When

After meals for gas/bloating; for poisoning, take immediately as directed. Separate from all medications and supplements by at least 2 hours.

Condition-Based Dosing

Acute poisoning/overdose (medical emergency)

25–100 g as a single dose, per poison control direction— Must be given as soon as possible, ideally within 1 hour; ineffective for caustics, metals, or alcohols.

Intestinal gas/bloating

500 mg - 2 g after meals— Evidence is inconsistent; discontinue if no improvement after 2 weeks.

Hypercholesterolemia (adjunctive)

4–8 g three times daily with meals— Based on older small trials; not a standard lipid therapy.

Safety & Limits

Upper Safe Limit

No established UL; chronic daily use is not recommended, and doses >10 g/day can impair nutrient absorption

Cycling

Use only short-term or episodically; if taken daily, stop after 1-2 weeks unless supervised.

Contraindications

Intestinal obstruction or severe ileus — risk of bezoar/impaction

Ingestion of caustic agents (acids/alkalis) — may interfere with endoscopy

Ingestion of hydrocarbons or metals — poor binding, limited benefit

Reduced consciousness or inability to swallow safely — aspiration risk

Pregnancy or breastfeeding — avoid routine use; use only if directed by a clinician or poison control

Avoid Combining With

✕Oral medications and supplements within 2+ hours (charcoal can bind them and reduce absorption)
✕Alcohol (not effectively adsorbed; no hangover prevention)
✕Dairy or high-fat meals taken at the same time (may reduce adsorption of some compounds)

Updated Invalid Date