Choline Bitartrate, 120 Capsules, RoexRoex Choline Bitartrate With Betaine HCl. Essential for Healthy Brain, Memory and Nerve Function. Supports Healthy Bladder and Kidney Function. Dietary Supplement. Choline bitartrate is an essential ingredient that allows the body to manufacture the neurotransmitter acetylcholine, which is essential for memory. It is also responsible for several other functions including the bladder, kidney, pancreatic, testicular, and liver functions. Roex Choline