Phosphorylcholine chloride is widely used in biomedical applications due to its biocompatibility and ability to mimic cell membrane properties. It is a key component in the development of biocompatible coatings for medical devices, such as stents, catheters, and implants, to reduce the risk of thrombosis and inflammation. In drug delivery systems, it enhances the stability and targeting efficiency of nanoparticles and liposomes. Additionally, it is utilized in the production of contact lenses to improve moisture retention and wearer comfort. In research, phosphorylcholine chloride serves as a model compound for studying cell membrane interactions and signaling pathways. Its applications also extend to the cosmetic industry, where it is incorporated into formulations to improve skin hydration and barrier function.