Drug interactions
Dapsone + Paracetamol
Severity: Minor
Dapsone and Paracetamol: minor 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
Both agents have been associated with methemoglobinemia, and dapsone is a well-known cause of dose-related hemolysis and methemoglobin formation. Paracetamol rarely causes methemoglobinemia, mostly in overdose or G6PD deficiency, so a clinically meaningful additive effect is possible in susceptible patients but uncommon at normal doses.
What this interaction means in plain words
Dapsone and Paracetamol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Dapsone belongs to Anti Bacterial; Paracetamol belongs to Musculoskeletal.
Why it happens
Additive oxidative stress on red cells with potential for methemoglobin formation; an interaction in metabolism is not well established.
What to do
Use usual paracetamol doses and monitor for cyanosis, dyspnea or falling oxygen saturation, especially in G6PD deficiency or high dapsone dose. Measure methemoglobin if symptoms arise.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Paracetamol
- Ethanol + Paracetamol Major
- Busulfan + Paracetamol Moderate
- Carbamazepine + Paracetamol Moderate
- Cholestyramine + Paracetamol Moderate
- Felbamate + Paracetamol Moderate
- Fosphenytoin + Paracetamol Moderate
Other interactions of Dapsone
- Bcg vaccine live + Dapsone Major
- Dapsone + Primaquine Major
- Apalutamide + Dapsone Moderate
- Belzutifan + Dapsone Moderate
- Bosentan + Dapsone Moderate
- Bupivacaine implant + Dapsone Moderate
Frequently asked questions
Can I take Dapsone with Paracetamol?
MediHelp rates the interaction as minor. Dapsone and Paracetamol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Both agents have been associated with methemoglobinemia, and dapsone is a well-known cause of dose-related hemolysis and methemoglobin formation. Paracetamol rarely causes methemoglobinemia, mostly in overdose or G6PD deficiency, so a clinically meaningful additive effect is possible in susceptible patients but uncommon at normal doses.
How serious is the interaction between Dapsone and Paracetamol?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use usual paracetamol doses and monitor for cyanosis, dyspnea or falling oxygen saturation, especially in G6PD deficiency or high dapsone dose. Measure methemoglobin if symptoms arise.
What other medicines interact with Paracetamol?
MediHelp also lists interactions of Paracetamol with, for example, Ethanol, Busulfan, Carbamazepine. The full list is on the Paracetamol page.
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