Budesonide and Ritonavir: Drug Interaction Guide
Quick answer: This is a major interaction — avoid combining Budesonide and Ritonavir unless specifically directed by your doctor.
How Budesonide interacts with Ritonavir
Ritonavir strongly inhibits CYP3A4-mediated budesonide metabolism, causing excessive systemic glucocorticoid exposure despite inhaled or intranasal administration.
What you should do
Avoid the combination when possible. Use an alternative corticosteroid with less CYP3A4 dependence and monitor for Cushing syndrome and adrenal suppression.
Key facts
Severity
Major — avoid combination
Mechanism
Ritonavir strongly inhibits CYP3A4-mediated budesonide metabolism, causing excessive systemic glucocorticoid exposure de...
Action
Avoid the combination when possible. Use an alternative corticosteroid with less CYP3A4 dependence and monitor for Cushi...
Frequently asked questions
Can I take Budesonide and Ritonavir together?
No — this combination should generally be avoided. Avoid the combination when possible. Use an alternative corticosteroid with less CYP3A4 dependence and monitor for Cushing syndrome and adrenal suppression.
What is the severity of this interaction?
The interaction between Budesonide and Ritonavir is classified as Major — avoid combination. Ritonavir strongly inhibits CYP3A4-mediated budesonide metabolism, causing excessive systemic glucocorticoid exposure despite inhaled or intranasal administration.
What should I do if I'm prescribed both?
Avoid the combination when possible. Use an alternative corticosteroid with less CYP3A4 dependence and monitor for Cushing syndrome and adrenal suppression. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.