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. 2023 Jun 12;21(6):173–177. doi: 10.1097/CLD.0000000000000056

TABLE 2.

First-line regimens for LTBI

Regimen Dosing
Isoniazida 5 mg/kg (maximum, 300 mg) orally for 9 mo
Rifampin 10 mg/kg (maximum, 600 mg) orally for 4 mo
Isoniazida and Rifapentine Isoniazid (orally once weekly for 3 mo; direct observation is preferred):
15 mg/kg, rounded up to the nearest 50 or 100 mg; 900 mg maximum
Rifapentine (orally once weekly for 3 mo; direct observation is preferred):
 10–14 kg: 300 mg
 14.1–25.0 kg: 450 mg
 25.1–32.0 kg: 600 mg
 32.1–49.9 kg: 750 mg
≥50 kg: 900 mg maximum
a

In conjunction with pyridoxine supplementation (25–50 mg daily) to prevent peripheral neuropathy.

Abbreviation: LTBI, latent tuberculosis infection.