SULPHAMAX 2.5 GM BOLUS - Sulfadimidine Boluses are an antibiotic drug used to treat and prevent infections caused by bacteria, protozoa, and certain rickettsial organisms in camels, cows, goats, and sheep. It is an effective for gastrointestinal infections and respiratory infections. This antibiotic also shows activity against certain protozoa, such as Eimeria and Isospora.