Maintains Cellular Efficiency, Proper Nerve Function and Metabolism of Fats and HDL Inositol is a direct precursor of phospholipids which are a major component of cellular membranes. It helps to maintain proper electrical energy and nutrient transfer across the cell membrane. Choline is a precursor of acetylcholine, a stimulatory neurotransmitter. It also helps in the production of lipotropic agents which converts fats into useful products and aids in the production of HDL cholesterol.* Nature's Ways Choline & Inositol is 100 % natural crystalline inositol and choline bound to tartaric acid for superior absorption. It contains no artificial ingredients or preservatives