Swanson Premium Acetyl L-Carnitine helps maintain healthy neurological function by delivering antioxidant protection throughout the entire nervous system. This unique ester of the amino acid L-carnitine also plays a key role in energy production for optimal brain function particularly focus and attention. Muscles throughout your body need this energy as well to grow stronger as you exercise. Your brain uses this energy to maintain healthy functions like neurotransmitter production. Acetyl L-carnitine is also needed for cellular membrane integrity and is used by the body in cognitive processes such as learning and memory. Acetyl L-carnitine sometimes abbreviated ALCAR promotes the health of your cells through its role in cellular energy production mitochondrial support and cellular metabolism. It also supports detoxification mechanisms which contribute to liver health which in turn bolsters nutrient use throughout the body. While acetyl L-carnitine is often confused with L-carnitine and can be used interchangeably in the body only acetyl L-carnitine is able to cross the blood-brain barrier to directly nourish the brain. Learn more about the differences between L-carnitine and acetyl L-carnitine or take a deeper dive into the benefits of acetyl L-carnitine .