Answer
Isoniazid should only be used during pregnancy if the potential benefit justifies the potential risk to the foetus, with pyridoxine supplementation recommended; untreated tuberculosis is considered a far greater hazard to the pregnant woman and foetus than treatment.
Sources for this answer
- Isoniazid Tablets BP 50mgRPH Pharmaceuticals AB · emc · SmPC §4.6 Fertility, pregnancy and lactation · Version 6Document updated
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