Natural Factors RegenerLife Acetyl-L-Carnitine - A highly bioavailable form of the amino acid L-carnitine able to effectively cross the blood-brain barrier. It plays a key role in the conversion of choline into acetylcholine, one of the most important neurotransmitters involved in healthy brain function, physical performance, and fat metabolism. Acetyl-L-carnitine is the preferred form of L-carnitine for fueling cells involved in neurological processes. It helps reduce fatigue and supports cognitive function in aging populations. Supplementing with acetyl-L-carnitine, as part of a healthy lifestyle that includes a nourishing diet, getting quality sleep, and engaging in regular exercise, contributes to optimizing mitochondrial health and wellness.