Midazolam and Ritonavir: Drug Interaction Guide

Quick answer: This is a major interaction — avoid combining Midazolam and Ritonavir unless specifically directed by your doctor.

Interaction severity: Major — avoid combination

How Midazolam interacts with Ritonavir

Ritonavir is a potent CYP3A4 inhibitor that increases oral midazolam exposure 20-fold, causing prolonged sedation and life-threatening respiratory depression.

What you should do

Oral midazolam is contraindicated. Parenteral midazolam may be used cautiously with reduced dose under continuous monitoring.

Key facts

Severity

Major — avoid combination

Mechanism

Ritonavir is a potent CYP3A4 inhibitor that increases oral midazolam exposure 20-fold, causing prolonged sedation and li...

Action

Oral midazolam is contraindicated. Parenteral midazolam may be used cautiously with reduced dose under continuous 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 Midazolam and Ritonavir together?

No — this combination should generally be avoided. Oral midazolam is contraindicated. Parenteral midazolam may be used cautiously with reduced dose under continuous monitoring.

What is the severity of this interaction?

The interaction between Midazolam and Ritonavir is classified as Major — avoid combination. Ritonavir is a potent CYP3A4 inhibitor that increases oral midazolam exposure 20-fold, causing prolonged sedation and life-threatening respiratory depression.

What should I do if I'm prescribed both?

Oral midazolam is contraindicated. Parenteral midazolam may be used cautiously with reduced dose under continuous monitoring. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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