Choline chloride is an essential nutrient and feed additive commonly used in poultry diets for several important physiological and metabolic functions. It supports growth, liver health, egg production and fat metabolism, while helping prevent disorders like fatty liver and perosis. Choline itself is not a true vitamin, because poultry can synthesize it to a limited extent from methionine, but endogenous synthesis is insufficient for rapid-growing or high-producing birds.