ALCA™ 500 contains Acetyl-L-Carnitine Arginate, a novel molecular combination of the amino acids Acetyl-L-Carnitine & L-Arginine. Acetyl-L-Carnitine is an amino acid found in high concentrations in human brain, nerve, heart, liver & sperm cells, where it participates in metabolizing fatty acids into energy by the mitochondria. As an antioxidant, Acetyl-L-Carnitine protects neurons from damage caused by superoxide radicals. Acetyl-L-Carnitine is involved in other aspects of neuronal metabolism because its molecular structure resembles the neurotransmitter acetylcholine. Acetyl-L-Carnitine supplementation supports energy utilization by its effects on fatty acid metabolism in the mitochondria. L-Arginine is utilized to produce nitric oxide by the action of the enzyme tetrahydrobiopterin (THBP). L-Arginine is a semi-essential amino acid synthesized by the body from ornithine. Arginine is important in bioenergetics because it is used by the body to produce creatine. Dosage Take 1 to 3 capsules daily, or as directed by your qualified health consultant.