Zinc Bacitracin is a kind of yellow or yellowish-grew powder which has a special smell.It is a polypeptide antibiotic,against Gram-positive bacteria with a bactericidal effect.The mechanism mainly inhibits bacterial wall synthesizing,combining with the sensitive membrane of bacteria,damaging the integrity of the cell membrance. Zinc Bacitracin and penicillin,streptomycin,neomycin,aureomycin,polymyxin has synergistic antibacterial effect.This product is incompatible with Olaquindox,kitasamycin,virginiamycin,enramycin.