Recommendations for the Management of Drug-Drug Interactions Between the COVID-19 Antiviral Nirmatrelvir/Ritonavir (Paxlovid) and Comedications

© 2022 The Authors. Clinical Pharmacology & Therapeutics published by Wiley Periodicals LLC on behalf of American Society for Clinical Pharmacology and Therapeutics..

The coronavirus disease 2019 (COVID-19) antiviral nirmatrelvir/ritonavir (Paxlovid) has been granted authorization or approval in several countries for the treatment of patients with mild to moderate COVID-19 at high risk of progression to severe disease and with no requirement for supplemental oxygen. Nirmatrelvir/ritonavir will be primarily administered outside the hospital setting as a 5-day course oral treatment. The ritonavir component boosts plasma concentrations of nirmatrelvir through the potent and rapid inhibition of the key drug-metabolizing enzyme cytochrome P450 (CYP) 3A4. Thus nirmatrelvir/ritonavir, even given as a short treatment course, has a high potential to cause harm from drug-drug interactions (DDIs) with other drugs metabolized through this pathway. Options for mitigating risk from DDIs with nirmatrelvir/ritonavir are limited due to the clinical illness, the short window for intervention, and the related difficulty of implementing clinical monitoring or dosage adjustment of the comedication. Pragmatic options are largely confined to preemptive or symptom-driven pausing of the comedication or managing any additional risk through counseling. This review summarizes the effects of ritonavir on drug disposition (i.e., metabolizing enzymes and transporters) and discusses factors determining the likelihood of having a clinically significant DDI. Furthermore, it provides a comprehensive list of comedications likely to be used in COVID-19 patients which are categorized according to their potential DDI risk with nirmatrelvir/ritonavir. It also discusses recommendations for the management of DDIs which balance the risk of harm from DDIs with a short course of ritonavir, against unnecessary denial of nirmatrelvir/ritonavir treatment.

Errataetall:

CommentIn: Clin Pharmacol Ther. 2023 Apr;113(4):768-769. - PMID 36544259

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:112

Enthalten in:

Clinical pharmacology and therapeutics - 112(2022), 6 vom: 12. Dez., Seite 1191-1200

Sprache:

Englisch

Beteiligte Personen:

Marzolini, Catia [VerfasserIn]
Kuritzkes, Daniel R [VerfasserIn]
Marra, Fiona [VerfasserIn]
Boyle, Alison [VerfasserIn]
Gibbons, Sara [VerfasserIn]
Flexner, Charles [VerfasserIn]
Pozniak, Anton [VerfasserIn]
Boffito, Marta [VerfasserIn]
Waters, Laura [VerfasserIn]
Burger, David [VerfasserIn]
Back, David J [VerfasserIn]
Khoo, Saye [VerfasserIn]

Links:

Volltext

Themen:

Antiviral Agents
Journal Article
O3J8G9O825
Review
Ritonavir

Anmerkungen:

Date Completed 22.11.2022

Date Revised 16.08.2023

published: Print-Electronic

CommentIn: Clin Pharmacol Ther. 2023 Apr;113(4):768-769. - PMID 36544259

Citation Status MEDLINE

doi:

10.1002/cpt.2646

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM340906626