Lecithin, which is a good source of phosphatidylcholine, choline, inositol, linoleic acid, and other phospholipids, has many functions in the human body. Since lecithin and other phospholipids are considered emulsifiers, allowing water and fat to mix, they are an essential part of cell membranes. Besides influencing cell membranes, lecithin also aids the cardiovascular and immune systems. There are many other beneficial function of lecithin to ensure that your body is function at it's best. WebVitamins offers a variety of lecithin supplements to fulfill individual needs.