Sulfadimethoxine Soluble Powder Antibacterial Poultry: use for the treatment of disease outbreaks of coccidiosis, fowl cholera, and infectious coryza. Cattle: use for the treatment of shipping fever complex, bacterial pneumonia, calf diphtheria, and foot rot. Broad-spectrum. Rapid penetration. Fast-acting because it s not inactivated by minerals in drinking water.