Supports Cardiovascular Health. Supports Brain Function and Liver Health. Natural Source of Choline. Natrol® Soya Lecithin offers a naturally occurring combination of phospholipids including Phosphatidylcholine and Phosphatidylinositol which are the preferred sources of Choline and Inositol respectively. Phospholipids are vital components of cell membranes ensuring cell function and growth and are involved in the synthesis of neurotransmitters. Lecithin also helps the body emulsify fat. Let Natrol Soya Lecithin help provide you with dietary support for the heart brain and liver health today.