Acetyl-L-Carnitine from TwinLab:

Effective In Maintaining Youthful Cellular Energy Metabolism!

Acetyl-L Carnitine is an amino acid. One hard gelatin capsule contains 500 mg of free form crystalline pure Acetyl-L-Carnitine.
Acetyl-L-carnitine has the same basic form as the amino acid carnitine. It also shares some similar functions, such as helping in metabolizing food into energy.

One of the most effective nutrients to maintain youthful cellular energy metabolism is the amino acid acetyl L-carnitine (ALC), which functions via several mechanisms to protect cells from the effects of aging. ALC assists in the transport of fat through the cell membrane and into the mitochondria within the cell, where these fats are oxidized to produce the cellular energy ATP. ALC is the acetyl ester of the amino acid L-carnitine. ALC is absorbed into the bloodstream more efficiently than L-carnitine. It passes more easily through cell membranes, and is utilized more efficiently in the mitochondria of the cell.