Researchers are investigating the antimicrobial potential of certain essential oils against multidrug-resistant Klebsiella pneumoniae. Some studies suggest that combining Cinnamomum triplinerve essential oils with polymyxin B may have synergistic effects, while others indicate that lavender essential oil may also be effective by inducing oxidative stress and modifying bacterial membrane permeability. The specific essential oils and mechanisms being studied appear to vary across different research efforts.