Choline – Uses, Benefits, Sources and Dosage Choline comes in the list of macronutrients which is essential for the normal development of brain, healthy liver functions, nerve functions, healthy metabolism and proper movements of muscles. Choline is available in the form of phosphatidycholine, a compound which helps in the formation of structural component of fat thus it is present in variety of foods which contain the fats. It plays a vital role in the countless processes that occur in the