"Choline" is a supplement providing a concentrated source of this essential nutrient, naturally found in eggs, fish, and certain plant-based foods. It plays a key role in nervous system function by aiding acetylcholine production, which influences memory, cognition, and muscle activity. Choline also contributes to lipid metabolism and liver detoxification while helping maintain homocysteine balance. Extensively researched for its biological importance, this supplement remains a key component in dietary strategies for brain and liver function.