Nirmatrelvir treatment duration and frequency of COVID-19 rebound.

IF 1.3 4区医学 Q4 INFECTIOUS DISEASES

Antiviral Therapy Pub Date : 2025-02-01 DOI:10.1177/13596535251323728

Nathan Sudeep, Noah Kojima, Jeffrey D Klausner

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引用次数: 0

Abstract

Background: Nirmatrelvir has been shown to reduce morbidity and mortality associated with COVID-19. However, it is underutilized due to concerns regarding COVID-19 symptom rebound following nirmatrelvir's standard 5-day course. This study aims to identify and evaluate a nirmatrelvir dosage regimen that lowers symptom rebound.

Methods: Based on nirmatrelvir pharmacokinetics, we propose a novel 8-day regimen: two doses twice-daily followed by six doses once-daily to reduce rebound frequency. We then carried out a retrospective case series study of clinical outcomes among our patients to investigate their frequency of COVID-19 symptom rebound following nirmatrelvir usage.

Results: Among the 58 prescribed case patients, 49 filled and initiated the prescription. Of those 49 patients, four took the medication for fewer than 5 days, 24 for 5 days (standard regimen), and 21 for 7 or 8 days (extended regimen). Among 5-day treatment cases (n = 24), 8 (33%) experienced clinical rebound, whereas among the 7-day or 8-day treatment cases (n = 21), 2 (9.5%) experienced rebound.

Conclusions: These findings suggest that a longer nirmatrelvir/ritonavir course might reduce rebound symptoms compared to the standard 5-day regimen.

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来源期刊

Antiviral Therapy 医学-病毒学

CiteScore

2.60

自引率

8.30%

发文量

审稿时长

4-8 weeks

期刊介绍： Antiviral Therapy (an official publication of the International Society of Antiviral Research) is an international, peer-reviewed journal devoted to publishing articles on the clinical development and use of antiviral agents and vaccines, and the treatment of all viral diseases. Antiviral Therapy is one of the leading journals in virology and infectious diseases. The journal is comprehensive, and publishes articles concerning all clinical aspects of antiviral therapy. It features editorials, original research papers, specially commissioned review articles, letters and book reviews. The journal is aimed at physicians and specialists interested in clinical and basic research.