Fluticasone and Nirmatrelvir/Ritonavir Interaction

Drug interaction information between Fluticasone and Nirmatrelvir/Ritonavir.

Fluticasone and Nirmatrelvir/Ritonavir have a documented moderate interaction in FDA labeling.

FDA drug labeling documents a moderate-severity interaction between Fluticasone and Nirmatrelvir/Ritonavir. This page displays the available source-record category and label text. The category is not an individual risk estimate or medication-combination direction.

Drug A

Fluticasone

Corticosteroid

Drug B

Nirmatrelvir/Ritonavir

Antiviral (Protease Inhibitor Combination)

How They Interact

This medication prevents your body from clearing the steroid fluticasone. This can lead to very high steroid levels, which may cause serious issues with your body's natural hormone production.

FDA Label Information

Corticosteroids primarily metabolized by CYP3A betamethasone, budesonide, ciclesonide, dexamethasone, fluticasone, methylprednisolone, mometasone, triamcinolone ↑ corticosteroid Co-administration with corticosteroids (all routes of administration) of which exposures are significantly increased by strong CYP3A inhibitors can increase the risk for Cushing’s syndrome and adrenal suppression.

Frequently Asked Questions

What SPL severity band is on file for Fluticasone + Nirmatrelvir/Ritonavir?

Compiled FDA labeling labels this pair moderate. That is a source-record field, not an individual medication-combination decision.

Which drug in this pair has the larger labeled-interaction portfolio?

Nirmatrelvir/Ritonavir has 86 labeled pairs on file vs Fluticasone's 7. In the moderate band specifically: Fluticasone has 2 (also Darunavir); Nirmatrelvir/Ritonavir has 30 (also Amlodipine, Tamsulosin, Apixaban, Clopidogrel).

What mechanism field is on file for Fluticasone and Nirmatrelvir/Ritonavir?

This medication prevents your body from clearing the steroid fluticasone. This can lead to very high steroid levels, which may cause serious issues with your body's natural hormone production.

Nirmatrelvir/Ritonavir carries more major-labeled pairs than Fluticasone

SPL source-record counts only. This page's band is moderate · classes on file: Fluticasone (Corticosteroid); Nirmatrelvir/Ritonavir (Antiviral (Protease Inhibitor Combination)).

Nirmatrelvir/Ritonavir has 23 major-labeled pairs vs Fluticasone's 0. This page itself is in the moderate band, not the major band.

Fluticasone

0 major · 2 moderate · 5 minor · 7 total

  • Other moderate peers for Fluticasone
  • Darunavir
Nirmatrelvir/Ritonavir

23 major · 30 moderate · 33 minor · 86 total

Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. This registry does not provide individual medication-combination directions.