Promotes energy production Supports brain health Free of gluten, dairy, soy, and nuts Referred to as ALCAR, acetyl-l-carnitine supports energy metabolism by transporting fatty acids to mitochondria?AKA the powerhouse of the cell. It also promotes the synthesis of acetylcholine, which is a neurotransmitter that contributes to normal brain function. Be mindful about supporting your brain and healthy energy levels with one of our smartest supplements: once-daily Acetyl-L-Carnitine from The Vitamin Shoppe? brand.