Non-benzodiazepine hypnotic (Z-drug)
Eszopiclone and smoking: how tobacco affects the medication
Tobacco smoking is one of the most underappreciated drug-drug interactions in chronic medication. Compounds in tobacco smoke induce hepatic enzymes (especially CYP1A2) and can shift the plasma concentration of many medications, including Eszopiclone (Eszopiclone), enough to matter clinically at 1mg, 2mg, 3mg.
How smoking affects Eszopiclone
Polycyclic aromatic hydrocarbons in tobacco smoke induce CYP1A2 and to a lesser extent other CYP enzymes. For medications metabolised primarily by CYP1A2, smokers can have plasma levels 30–50% lower than non-smokers at the same dose. Whether Eszopiclone is affected depends on its specific metabolic pathway. Eszopiclone is a positive allosteric modulator of the GABA-A receptor at a site close to the benzodiazepine binding site.
Practical guidance
According to the prescribing information for Eszopiclone, smoking status should be disclosed at every dose review of Eszopiclone. Stopping smoking can paradoxically raise plasma levels of CYP1A2-metabolised medications enough to cause new-onset side effects within days, and may require a temporary dose reduction. The 1mg, 2mg, 3mg starting strength assumed in the prescribing information is usually for non-smokers.
Frequently asked questions
Does smoking change how Eszopiclone works? ▾
For medications metabolised by CYP1A2, yes — smokers may need higher doses or have reduced effect at standard 1mg, 2mg, 3mg. Whether Eszopiclone specifically is affected depends on whether Eszopiclone uses CYP1A2. The prescribing information notes any documented interaction.
Will I need to adjust Eszopiclone if I quit smoking? ▾
Possibly, if Eszopiclone is one of the medications affected by CYP1A2 induction. Stopping smoking restores CYP1A2 to normal within days, raising plasma levels and potentially causing side effects. Discuss the timing of any dose adjustment with the prescriber when planning to quit.
Products containing Eszopiclone
More on Eszopiclone
- With alcoholEszopiclone and alcohol — is it safe to drink?
- With foodShould Eszopiclone be taken with food?
- Side effectsEszopiclone side effects: common, rare and warning signs
- Dosage guideEszopiclone dosage guide: how much to take and when
- OnsetHow fast does Eszopiclone start working?
- DurationHow long does Eszopiclone last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.