Drug interactions
Duloxetine + Tobacco use
Severity: Minor
Duloxetine and Tobacco use: 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
Tobacco smoke induces CYP1A2, a main route of duloxetine metabolism, lowering duloxetine exposure in smokers. The effect is modest and rarely needs a change in therapy.
What this interaction means in plain words
Duloxetine and Tobacco use have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
CYP1A2 induction by tobacco smoke increases duloxetine clearance.
What to do
No routine dose change is required. Titrate to clinical response and reassess if smoking status changes.
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 Duloxetine
- Duloxetine + Isocarboxazid Contraindicated
- Duloxetine + Linezolid Contraindicated
- Duloxetine + Methylene blue Contraindicated
- Duloxetine + Phenelzine Contraindicated
- Duloxetine + Procarbazine Contraindicated
- Duloxetine + Rasagiline Contraindicated
Frequently asked questions
Can I take Duloxetine with Tobacco use?
MediHelp rates the interaction as minor. Duloxetine and Tobacco use have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Tobacco smoke induces CYP1A2, a main route of duloxetine metabolism, lowering duloxetine exposure in smokers. The effect is modest and rarely needs a change in therapy.
How serious is the interaction between Duloxetine and Tobacco use?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine dose change is required. Titrate to clinical response and reassess if smoking status changes.
What other medicines interact with Duloxetine?
MediHelp also lists interactions of Duloxetine with, for example, Isocarboxazid, Linezolid, Methylene blue. The full list is on the Duloxetine page.
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