Choline and inositol Choline and Inositol - two words you probably haven't heard before. In terms of supplements, however, these are important B-group nutritional supplements, which are actually vitamins. These substances are very similar to vitamins and support liver function and lipid metabolism, i.e. fat metabolism. Choline is a water-soluble vitamin. It is found in lecithin, which is common in many plant and animal tissues. Choline is a precursor to the neurotransmitter (i.e. transmitter) acetylcholine, which is involved in many memory and muscle functions. Choline is popular for its fat-metabolizing effect, thus it helps in weight loss. It is a micronutrient that is needed in the diet of a nursing mother, for the proper growth of the baby. It can be found in meat and eggs, or in cement beans and peanuts. Inositol is an important building block of phospholipids and other biomolecules in the body. It is also known as vitamin B8, although it is not actually a vitamin. It is found in highest concentrations in the brain, where it enables the binding of neurotransmitters. The human body can