1. Product description: choline is indispensable for the bio-synthesis of phosphatidylcholine, basic 1. Product description: choline is indispensable for the bio-synthesis of phosphatidylcholine, basic component of cell memberane and precursor of neurotransmitter acetylcholine. Deficiency of choline may cause hepatic steatosis, ophthalmoptosis, anaemia, abdominal distention, etc. Choline usually ...