Natures Aid Acety-l L-Carnitine - 30 tabs.. per tablet Acetyl-L-Carnitine 250mg ..take one to three tabs daily with water.. Acetyly- L-Carnitine is a source of carnitine,a naturally occuring amino acid.In the body,it is responsible for the transport of fatty acids into the mitochondria where they are used to produce the energy rich chemicals which fuel the body..