# Adverse Drug Reaction to Linezolid in Drug-Resistant Tuberculosis: A Systematic Review

## TL;DR

This study reviews adverse drug reactions to linezolid in drug-resistant tuberculosis patients, highlighting the need for careful monitoring.

## Contribution

The paper systematically reviews linezolid-related adverse drug reactions in drug-resistant tuberculosis, emphasizing dose- and duration-dependent effects.

## Key findings

- The three main adverse drug reactions reported are hematologic toxicity, peripheral neuropathy, and optic neuritis.
- Linezolid doses ranged from 300 mg to 1200 mg, with 600 mg/twice daily and 1200 mg/day being the most common.
- Hematological toxicity occurs early, while peripheral neuropathy and optic neuritis appear with long-term use.

## Abstract

Background/Objectives: The use of linezolid in drug-resistant tuberculosis has shown good effectiveness but has a high risk of adverse drug reactions (ADRs). Linezolid-related ADRs have been widely reported and may affect their therapeutic effect. This systematic review aimed to describe linezolid-related ADRs in drug-resistant tuberculosis. Methods: This literature review was conducted on PubMed, Scopus, ProQuest, and Sage without year limitation, up to June 2023. Study quality was assessed using the JBI checklist to evaluate method quality and risk of bias in the included articles. Inclusion criteria included studies assessing linezolid-correlated ADRs in drug-resistant tuberculosis patients with individual regimens, having access to the full text, and using the English or Indonesian language. Potential reporting bias was minimized by comprehensive database search and duplicate screening. Results: Initially, we identified 650 potential studies. Upon further assessment for relevance and eligibility, seven articles were selected for analysis. From seven articles, it was shown that all articles were reporting about linezolid-correlated ADRs. The three main ADRs are hematologic toxicity, peripheral neuropathy, and optic neuritis. In addition, gastrointestinal disorder and hyperlactatemia are reported as ADRs too. Varied doses of linezolid were used in the seven articles; they range from 300 mg to 1200 mg, with 600 mg/twice daily and 1200 mg/day being dominant. Conclusions: Linezolid-associated ADRs are dose- and duration-dependent. Hematological toxicity most commonly occurs at the beginning of treatment, while peripheral neuropathy and optic neuritis appear after long-term use. Therefore, intensive monitoring and therapeutic drug monitoring are essential to ensure the safety of linezolid therapy.