Herbal Polysporin-like ointment Time to make: 12 hours to infuse the oil (hands-off) plus 20 minutes, hands on, to make the salve. is an antimicrobial wound care ointment that contains the chemical antibiotic Polymyxin B sulfate.  You can make a simple yet potent herbal ointment that is as effective as the OTC antibiotic ointment for […]