WHO Model List
isoniazid
International nonproprietary name (English: isoniazid). Brand names vary by country.
Indications retained by WHO
Tuberculosis; Other specified tuberculosis.
Listed forms and strengths
- Oral > Solid > dispersible tablet: 100 mg (scored)
- Oral > Solid > tablet: 100 mg; 300 mg
- Parenteral > General injections > IV: 100 mg per mL
Forms retained in the model list; presentations available in each country may differ.
General information from the WHO list. It replaces neither the prescription nor the leaflet: dosage and duration are for the doctor or pharmacist to decide.
Source: WHO electronic Essential Medicines List (2025 edition), checked on 14/11/2026. An error or an imprecision? Let us know
