Glycerol trieicosapentaenoyl is primarily utilized in the field of nutritional science and dietary supplements due to its high content of eicosapentaenoic acid (EPA), an omega-3 fatty acid. It is incorporated into formulations aimed at improving cardiovascular health, reducing inflammation, and supporting brain function. This compound is often found in fish oil supplements, where it enhances bioavailability and absorption of EPA in the body. Additionally, it is used in research to study the effects of omega-3 fatty acids on metabolic disorders and chronic diseases. Its application extends to functional foods and nutraceuticals designed to promote overall health and well-being.