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Prednisolone and Rifampicin: Drug Interaction Guide

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

Interaction severity: Moderate — caution required

How Prednisolone interacts with Rifampicin

Rifampicin is a potent CYP3A4 inducer, accelerating corticosteroid metabolism and reducing prednisolone exposure by 50-66%, potentially causing therapeutic failure or adrenal crisis.

What you should do

Increase prednisolone dose 1.5-2 fold during rifampicin therapy. In adrenal insufficiency or transplant patients, monitor closely and consider alternative antimycobacterials.

Key facts

Severity

Moderate — caution required

Mechanism

Rifampicin is a potent CYP3A4 inducer, accelerating corticosteroid metabolism and reducing prednisolone exposure by 50-6...

Action

Increase prednisolone dose 1.5-2 fold during rifampicin therapy. In adrenal insufficiency or transplant patients, monito...

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 Prednisolone and Rifampicin together?

With caution. Increase prednisolone dose 1.5-2 fold during rifampicin therapy. In adrenal insufficiency or transplant patients, monitor closely and consider alternative antimycobacterials.

What is the severity of this interaction?

The interaction between Prednisolone and Rifampicin is classified as Moderate — caution required. Rifampicin is a potent CYP3A4 inducer, accelerating corticosteroid metabolism and reducing prednisolone exposure by 50-66%, potentially causing therapeutic failure or adrenal crisis.

What should I do if I'm prescribed both?

Increase prednisolone dose 1.5-2 fold during rifampicin therapy. In adrenal insufficiency or transplant patients, monitor closely and consider alternative antimycobacterials. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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