Merck Manual

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Dosages of Sulfonamides

Dosages of Sulfonamides

Sulfonamide

Species

Dosage, Route, and Frequency

Sulfathiazole

Horses

66 mg/kg, PO, tid

Cattle, sheep, pigs

66 mg/kg, PO, every 4 hr

Sulfamethazine

Cattle

220 mg/kg/day, PO or IV (initial dose; half for subsequent doses)

Sulfadiazine

All

50 mg/kg, PO, bid

Sulfadimethoxine

All

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

Sulfaethoxypyridazine

Cattle

55 mg/kg/day, PO

Pigs

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

Sulfapyridine

Cattle

132 mg/kg, PO, bid (initial dose, half for subsequent doses)

Succinylsulfathiazole

All

160 mg/kg, PO, bid (initial dose; half for subsequent doses)