Polymyxin B
Polymyxin B is an antibiotic that belongs to the class of medications known as polymyxins. It is primarily used to treat infections caused by gram-negative bacteria, particularly those resistant to other antibiotics. Polymyxin B works by disrupting the bacterial cell membrane, leading to cell death.
This antibiotic is often administered topically for skin infections or as an eye drop for ocular infections. In some cases, it may be used intravenously for severe infections, although its use is limited due to potential toxicity, particularly to the kidneys and nervous system.