Doctor's Best Acetyl-L-Carnitine 500mg supports glucose metabolism, energy, assist to regenerate Vitamin C, Vitamin E and Glutathione, and help eliminate free radicals.  Acetyl-L-Carnitine provides a naturally occurring form of L-carnitine, a vitamin-like nutrient synthesised in the body from the amino acids lysine and methionine. Acetyl-l-carnitine (ALC) plays a key role in the production of acetylcholine, an important neurotransmitter for brain and nerve cell function. The acetyl-l-carnitine in this product, from the renowned Italian based Sigma-tau Pharmaceuticals company, is derived from a base of pharmaceutical grade l-carnitine manufactured by patented, FDA-approved process that fully complies with USP, FCC and EU monographs. Doctor's Best Acetyl-L-Carnitine is pesticide-free and BSE safe.