Drug interactions
Ethanol + Paracetamol
Severity: Major
Ethanol and Paracetamol: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Chronic heavy alcohol use induces CYP2E1 and depletes glutathione, increasing formation and reducing detoxification of the toxic paracetamol metabolite NAPQI. This raises the risk of hepatotoxicity, even at moderate paracetamol doses.
What this interaction means in plain words
Ethanol and Paracetamol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Ethanol induces CYP2E1 and depletes hepatic glutathione, increasing NAPQI-mediated liver injury.
What to do
In chronic heavy drinkers limit paracetamol to the lowest effective dose, generally no more than 2 g daily, and avoid it in alcoholic liver disease.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Paracetamol
- Busulfan + Paracetamol Moderate
- Carbamazepine + Paracetamol Moderate
- Cholestyramine + Paracetamol Moderate
- Felbamate + Paracetamol Moderate
- Fosphenytoin + Paracetamol Moderate
- Imatinib + Paracetamol Moderate
Frequently asked questions
Can I take Ethanol with Paracetamol?
MediHelp rates the interaction as major. Ethanol and Paracetamol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Chronic heavy alcohol use induces CYP2E1 and depletes glutathione, increasing formation and reducing detoxification of the toxic paracetamol metabolite NAPQI. This raises the risk of hepatotoxicity, even at moderate paracetamol doses.
How serious is the interaction between Ethanol and Paracetamol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: In chronic heavy drinkers limit paracetamol to the lowest effective dose, generally no more than 2 g daily, and avoid it in alcoholic liver disease.
What other medicines interact with Paracetamol?
MediHelp also lists interactions of Paracetamol with, for example, Busulfan, Carbamazepine, Cholestyramine. The full list is on the Paracetamol page.
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