Clozapine and Tobacco Smoking: Drug Interaction Guide
Quick answer: This combination requires caution. Clozapine and Tobacco Smoking can be used together with adjustments and monitoring.
How Clozapine interacts with Tobacco Smoking
Polycyclic aromatic hydrocarbons in tobacco smoke induce CYP1A2, increasing clozapine clearance. Stopping smoking reverses induction and can raise clozapine concentrations.
What you should do
Monitor clozapine levels and clinical status whenever smoking starts, stops, or changes substantially. Adjust clozapine dose proactively during smoking cessation.
Key facts
Severity
Moderate — caution required
Mechanism
Polycyclic aromatic hydrocarbons in tobacco smoke induce CYP1A2, increasing clozapine clearance. Stopping smoking revers...
Action
Monitor clozapine levels and clinical status whenever smoking starts, stops, or changes substantially. Adjust clozapine ...
Frequently asked questions
Can I take Clozapine and Tobacco Smoking together?
With caution. Monitor clozapine levels and clinical status whenever smoking starts, stops, or changes substantially. Adjust clozapine dose proactively during smoking cessation.
What is the severity of this interaction?
The interaction between Clozapine and Tobacco Smoking is classified as Moderate — caution required. Polycyclic aromatic hydrocarbons in tobacco smoke induce CYP1A2, increasing clozapine clearance. Stopping smoking reverses induction and can raise clozapine concentrations.
What should I do if I'm prescribed both?
Monitor clozapine levels and clinical status whenever smoking starts, stops, or changes substantially. Adjust clozapine dose proactively during smoking cessation. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.