Neosporin

This is a combination antibiotic ointment containing neomycin, bacitracin, and polymyxin. While relatively effective as a broad spectrum antibiotic, some people have an allergy or sensitivity to neomycin. In these cases, Polysporin (which only contains bacitracin and polymyxin) can be used to good effect. I rarely prescribe this medicine given the plethora of good antibiotic drops and ointments available that have less side effects.