Sulfonamide | Species | Dosage, Route, and Frequency | Notes |
---|---|---|---|
Sulfamethazine | Cattle, horses | 225 mg/kg, PO, once, followed by 110 mg/kg, PO, q 24 h for 4 doses | ELDU of sulfonamides is prohibited in lactating dairy cattle in the US |
Calves, swine | 247 mg/kg, PO, once, followed by 123.75 mg/kg, PO, q 24 h for 3 days as drench or drinking water | ||
Chickens, excluding layers | 134–195 mg/kg, PO as medicated water, q 24 h for up to 6 days | ||
Sulfadimethoxine | Cattle, excluding veal | 55 mg/kg, PO or IV, once, followed by 27.5 mg/kg, PO or IV, q 24 h for up to 5 days | |
Dogs, cats | 55 mg/kg, PO, IV, or SC, once, followed by 27.5 mg/kg, PO, IV, or SC, q 24 h | ||
Chickens (excluding layers) | 0.05% drinking water solution for 6 days | Also available as a veterinary feed directive product | |
Sulfaethoxypyridazine | Cattle | 55 mg/kg, PO or IV, q 24 h for 4 days | |
ELDU, extralabel drug use |