Acetyl L-Carnitine is a molecule that occurs naturally in the brain, liver, and kidney. It is similar to the amino acid L-Carnitine and is involved in brain energy metabolism. It supports memory and cognition while helping to protect from oxidative stress. This formulation provides Free Form Acetyl L-Carnitine to promote optimal absorption and assimilation. Suggested Use. As a dietary supplement for adults, take one (1) tablet twice daily, between meals or as directed by a healthcare practitioner. Other.