bacitracin + polymyxin B + nystatin

A combination antimicrobial preparation containing bacitracin, polymyxin B, and nystatin. This topical formulation provides broad-spectrum coverage against both bacterial and fungal infections. * **Bacitracin** inhibits bacterial cell wall synthesis. * **Polymyxin B** disrupts the outer cell membrane of Gram-negative bacteria by displacing calcium and magnesium ions from phosphates of membrane lipids, increasing membrane permeability and causing cytoplasmic leakage. * **Nystatin** is an antifungal agent that targets fungal infections, particularly those caused by Candida species. This combination is often used in compounded preparations for burn care and other skin infections.