Alpha-glycerylphosphorylcholine • The ability of the brain to take in necessary raw materials. • The loss of balance in key cholinergic enzymes. • The loss of choinergic neurons. Weak Link 3: Brain Drain. L-a-glyceryl phosphorylcholine 250 mg TM SUPPLEMENT FACTS: Serving Size: 1 Capsule The aging brain’s cholinergic function is impaired at several points, all of which affect mental performance: