Used primarily as a phospholipid component in liposomal drug delivery systems, this compound enhances the stability and biocompatibility of liposomes. It is especially effective in mRNA-based therapeutics, where it helps form lipid nanoparticles (LNPs) that protect the genetic material and facilitate cellular uptake. Its zwitterionic nature at physiological pH contributes to reduced toxicity and improved circulation time in vivo. Commonly found in vaccine formulations, it supports efficient delivery of nucleic acids into cells, making it critical in gene therapy and modern vaccine technologies.