Uridine is a nucleoside composed of uracil, a nitrogenous base, and ribose, a sugar molecule, crucial for the synthesis of RNA and DNA. It plays a vital role in cellular metabolism as a precursor for the synthesis of pyrimidine nucleotides, which are essential building blocks of nucleic acids. Beyond its role in nucleic acid synthesis, uridine is involved in various physiological processes, including neurotransmission, where it modulates synaptic function and enhances neuronal plasticity. Uridine also participates in lipid metabolism, aiding in the formation of cell membranes and supporting liver health by promoting lipid homeostasis. Furthermore, uridine has shown therapeutic potential in enhancing cognitive function and memory, making it a subject of interest in research on neurodegenerative diseases and cognitive disorders. Its multifaceted roles underscore its importance in cellular function and its potential applications in promoting brain health and overall well-being.