Oxycodone and Rifampicin: Drug Interaction Guide

Quick answer: This combination requires caution. Oxycodone and Rifampicin can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Oxycodone interacts with Rifampicin

Rifampicin strongly induces CYP3A4, increasing oxycodone metabolism and reducing analgesic exposure; stopping rifampicin can subsequently increase oxycodone concentrations.

What you should do

Monitor analgesic response and withdrawal symptoms, consider an alternative opioid, and reassess the oxycodone dose when rifampicin is started or stopped.

Key facts

Severity

Moderate — caution required

Mechanism

Rifampicin strongly induces CYP3A4, increasing oxycodone metabolism and reducing analgesic exposure; stopping rifampicin...

Action

Monitor analgesic response and withdrawal symptoms, consider an alternative opioid, and reassess the oxycodone dose when...

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 Oxycodone and Rifampicin together?

With caution. Monitor analgesic response and withdrawal symptoms, consider an alternative opioid, and reassess the oxycodone dose when rifampicin is started or stopped.

What is the severity of this interaction?

The interaction between Oxycodone and Rifampicin is classified as Moderate — caution required. Rifampicin strongly induces CYP3A4, increasing oxycodone metabolism and reducing analgesic exposure; stopping rifampicin can subsequently increase oxycodone concentrations.

What should I do if I'm prescribed both?

Monitor analgesic response and withdrawal symptoms, consider an alternative opioid, and reassess the oxycodone dose when rifampicin is started or stopped. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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