Activated Charcoal: uses, side effects & brands

Written & medically reviewed by Dr. Sanjay Anbu, MBBS · Last reviewed 5 November 2026

Activated charcoal can bind some poisons if given soon after ingestion, under medical guidance. It belongs to the Emergency & critical-care medicine group. These are used in medical emergencies, usually by trained staff.

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Drug type — dosing is set by your doctor

Measure	Range
Drug class	Emergency & critical-care medicine
Type	Prescription
Dose	Individual — ask your doctor or pharmacist

What it is used for

Some poisonings or medicine overdoses, if given soon after swallowing
Used in hospital or on the advice of a poisons expert
Sometimes repeated for certain drugs that stay in the gut

Common brand names

India: Charcoal, Actidose
Worldwide: Actidose, EZ-Char

Common side effects

Black stools
Constipation
Nausea or vomiting

Before taking it — precautions

Only give on advice from a doctor or poisons centre
It does not work for acids, alkalis, alcohol, iron or petrol-type products
It can stop other medicines working if taken at the same time

When to see a doctor urgently

Drowsy or unconscious person: do not give by mouth, get help (urgent)
Coughing or choking while swallowing it (urgent)
Severe tummy pain or swelling with no bowel movement

Not a prescription — no dose shown. The right dose of activated charcoal depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.

Frequently asked questions

Should I keep activated charcoal at home for poisoning?

Do not give it on your own. Call a doctor or poisons centre first, because it is useless or harmful for some poisons.

Why are my stools black?

This is the charcoal passing through and is harmless.

Does charcoal help with every overdose?

No. It works best soon after swallowing and only for substances it can bind; hospital teams decide when it helps.

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Sources & further reading

Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.