Choline chloride is widely used in animal feed as an essential nutrient to support growth and development, particularly in poultry and swine. It acts as a source of labile methyl groups and helps in fat metabolism, preventing fatty liver conditions. In the pharmaceutical industry, it is used in supplements and parenteral nutrition to address choline deficiencies. It also serves as a component in some electrolyte solutions and is used in the formulation of certain medications targeting liver function and lipid metabolism. Additionally, choline chloride is utilized in the synthesis of deep eutectic solvents, which are green solvents applied in organic synthesis and extraction processes. In agriculture, it is sometimes included in plant growth promoters to enhance stress resistance and improve crop yield.