Progressive Labs Acetyl-L-Carnitine 500 mg 60 capsDescription Acetyl L Carnitine (ALC), the acetyl ester and biologically active form of L Carnitine, is an effective delivery form for both L Carnitine and acetyl groups. Essential for normal mitochondrial function in all cells, L Carnitine's primary function is to transport long chain fatty acids into the mitochondria where they are oxidized to produce energy. The acetyl form is unique in that it is able to cross the blood brain barrier where it