TB Preventive Treatment Tablets by Weight: 3HP, 3HR, 6H, 4R, 1HP, 6Lfx (WHO 2024)
Gives WHO TB preventive treatment tablets by weight band.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Regimen
- 3HP: weekly rifapentine + isoniazid, 3 months
- Weight in kg
- 18
- Age in years
- 5
Result: 3HP, 15-19.9 kg: isoniazid 100 mg dispersible 3 tablets + rifapentine 150 mg dispersible 3 tablets, once a week for 3 months (12 doses).
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Regimen
- Weight in kg
- Age in years (for infants, 3 months = 0.25)
How this is calculated
Citation
WHO. Operational handbook on tuberculosis. Module 1: prevention: tuberculosis preventive treatment. 2nd ed. Geneva: WHO; 2024. Table 3 (pp. 42-44) and Table 4 (pp. 46-47, with the erratum). Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.