monophosphoryl lipid A

Monophosphoryl lipid A (MPL) is a substance derived from the outer membrane of certain bacteria. It functions as an adjuvant, meaning it helps boost the body's immune response when used in vaccines. By stimulating immune cells, MPL enhances the body's ability to recognize and fight infections, making vaccines more effective. Importantly, MPL retains the immune-stimulating properties of bacterial components but has been modified to reduce potential side effects, ensuring safety while strengthening immunity.