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Activated charcoal (الفحم النشط)

Activated charcoal is a fine black powder that binds some substances in the gut so less is absorbed. It is used in hospital for some poisonings, and capsules are sold for wind and bloating, although the evidence for this use is limited.

What it is used for

  • Emergency treatment of some poisonings and overdoses, in hospital or on medical advice
  • Relieving wind (gas) and bloating; the evidence for benefit is limited

How it is used

  • For poisoning: call emergency services or a poison centre first, and give it only on their advice
  • Capsules and tablets are swallowed with water; follow the leaflet and ask your pharmacist
  • Shake the suspension well before use
  • Leave a gap of a few hours between it and any other medicines

Possible side effects

  • Black stools, which is harmless
  • Constipation
  • Nausea or vomiting, especially with the large amounts used for poisoning

Who should not use it

  • Do not use it if you are allergic to this medicine or any ingredient in the product
  • A blocked bowel
  • It does not help in poisoning with corrosive acids or alkalis, petroleum products, alcohol, iron or lithium

Before and while using it

  • Do not give it at home to someone who is drowsy or unconscious; call an ambulance
  • It reduces the absorption of other medicines, including the contraceptive pill; keep them apart
  • See a doctor if bloating continues or comes with severe pain, blood in the stool or weight loss

Medicine interactions

  • It reduces the absorption of many medicines taken by mouth, including contraceptive pills; tell your pharmacist about all your medicines

Pregnancy and breastfeeding

  • It is not absorbed into the body and is usually considered suitable in pregnancy and breastfeeding; ask your pharmacist before regular use

How to store it

  • Store tightly closed at room temperature away from moisture, out of the sight and reach of children.

Get medical help straight away if

  • Your face, lips or tongue swell, or you find it hard to breathe.
  • You get a severe rash, blistering or peeling skin.
  • A side effect worries you or doesn’t go away: contact your doctor or pharmacist.

Questions about this medicine?

Talk to a doctor by video, or send your question by text.

Source: Standard international medicine references

This guide is general information and doesn’t replace advice from your doctor or pharmacist. Don’t start, stop or change a medicine without asking them, and always read the leaflet in the pack.