Theophylline and Tobacco Smoking: Drug Interaction Guide

Quick answer: This combination requires caution. Theophylline and Tobacco Smoking can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Theophylline interacts with Tobacco Smoking

Polycyclic aromatic hydrocarbons in tobacco smoke induce CYP1A2, increasing theophylline clearance. Smoking cessation reverses induction and can raise theophylline concentrations.

What you should do

Monitor theophylline levels and clinical response when smoking status changes; reduce theophylline dose after cessation if levels rise.

Key facts

Severity

Moderate — caution required

Mechanism

Polycyclic aromatic hydrocarbons in tobacco smoke induce CYP1A2, increasing theophylline clearance. Smoking cessation re...

Action

Monitor theophylline levels and clinical response when smoking status changes; reduce theophylline dose after cessation ...

Important medical disclaimer: This page provides educational information about drug interactions for general reference. It is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your specific medications with a qualified healthcare provider before starting, stopping, or changing any treatment. About our editorial team.

Frequently asked questions

Can I take Theophylline and Tobacco Smoking together?

With caution. Monitor theophylline levels and clinical response when smoking status changes; reduce theophylline dose after cessation if levels rise.

What is the severity of this interaction?

The interaction between Theophylline and Tobacco Smoking is classified as Moderate — caution required. Polycyclic aromatic hydrocarbons in tobacco smoke induce CYP1A2, increasing theophylline clearance. Smoking cessation reverses induction and can raise theophylline concentrations.

What should I do if I'm prescribed both?

Monitor theophylline levels and clinical response when smoking status changes; reduce theophylline dose after cessation if levels rise. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

Last reviewed: by iMedic Medical Editorial Team. Our editorial process.