Since 1947 500 mg/500 mg (Per Serving) Essential for Brain & Nerve Function Gluten, Wheat & Dairy Free Suitable for Vegetarians Dietary Supplement Kosher Parve Choline and Inositol are members of the B Complex. They are components of cell membranes and play important roles in healthy cell growth and function. Choline and Inositol promote normal, healthy brain and nerve function and support energy metabolism. Choline is used to synthesize acetylcholine, a critical neurotransmitter. It helps promote normal fat metabolism and supports liver health.