Solgar Lecithin capsules are naturally sourced from soy. Lecithin is a vital component of the nervous system and provides nutrients to support cardiovascular health. Lecithin acts as a natural fat emulsifier in the body, ensuring fats and cholesterol are properly transported and digested. Brain function may also be improved by the assistance of soy. Lecithin is a significant source of phospholipids. These are found in the structure of all cell membranes and are needed by every living cell in the body.