Choline chloride is widely used as a vital nutrient in animal feed, particularly for poultry and swine, to promote growth and prevent health issues. It also functions as a nutritional supplement for humans, supporting cell membrane integrity, nerve function, and brain development. Additionally, choline chloride serves as a clay stabilizer in the oil and gas industry and as a component in deep eutectic solvents (DESs) for various scientific and industrial applications.