amino acid metabolism.The human body can obtain amino acids through food digestion & absorption,tissue decomposition,internal synthesis of 3 ways. Amino acids in amino acid metabolism pool can be deacidified to produce amino Acetyl L Carnitine Supplement Allergy Research Group Acetyl L Carnitine Core Nutritionals Effects of acetyl L carnitine in Alzheimer's disease patients unresponsive to acetylcholinesterase inhibitors: Current Medical Research and Opinion: Vol 19, No 4