Choline chloride is a chloride form of choline, commonly used as a food additive, pharmaceutical raw material, and research reagent.

1. Choline chloride is widely used as a food additive, mainly to enhance the flavor and taste of food. It can be used in condiments, biscuits, meat products, and other foods to enhance their flavor and extend their shelf life.

2. Medical raw materials: Choline chloride has certain pharmacological effects, which can regulate the function of the nervous system, improve memory, increase attention and concentration, and have certain therapeutic effects on the treatment of memory decline, anxiety, and lack of concentration. Therefore, it is made into supplements or tablets and widely used in the health product market and drug production.

3. Research reagents: Choline chloride is also used as a reagent in scientific research, especially in biomedical research. It can be used in experiments such as cell culture, cell cryopreservation, and cell growth, for research on cell division, cell membrane structure, and neural cell function.

Note: Choline chloride as a food additive and health product is safe and has certain pharmacological effects within a certain dosage range. However, excessive use or exceeding the recommended dosage may cause some adverse reactions such as headache, nausea, vomiting, etc. Therefore, when using choline chloride, it should be used reasonably according to the product, book, or doctor's guidance.