Used as a solubilizing agent and contrast medium in medical imaging, particularly in radiology. It helps improve the solubility and stability of certain drugs and diagnostic agents. Commonly found in formulations for X-ray and MRI contrast agents due to its ability to form stable complexes with iodinated compounds. Also serves as an excipient in ophthalmic solutions to adjust tonicity and enhance drug delivery. Its low toxicity and good biocompatibility make it suitable for use in various pharmaceutical preparations.