WHO recommends and endorses the use of fixed-dose combinations and the development of appropriate new fixed-dose combinations, including modified dosage forms, non-refrigerated products and paediatric dosage forms of assured pharmaceutical quality.
Summary of evidence and Expert Committee recommendations
The Expert Committee recommended the deletion of the 60 mg + 60 mg and 150 mg + 150 mg formulations of isoniazid + rifampicin for intermittent use three times weekly from the core list of the EML, noting the advice of the WHO Global TB Programme that their use is no longer recommended in current WHO guidelines based on evidence that patients who received three times weekly dosing had a higher risk of treatment failure, disease relapse and acquired drug resistance compared with patients who received daily dosing (1).
1. Guidelines for treatment of drug-susceptible tuberculosis and patient care, 2017 update. Geneva: World Health Organization; 2017.