Merck Manual

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Dosages of Potentiated Sulfonamides

Dosages of Potentiated Sulfonamides

Combination Sulfonamide

Dosage, Route, and Frequency

Trimethoprim/sulfadiazine

15–60 mg/kg/day, PO, IV, or IM

Ormetoprim/sulfadimethoxine

55 mg/kg/day, PO (initial dose; half for subsequent doses)