1. What is it and where does it come from?

Acetyl-L-carnitine is a dietary supplement, and the acetyl ester of L-carnitine, is used to support a healthy memory. It occurs naturally in animal products. Chemically, acetyl-L-carnitine is known as beta-acetoxy-gamma-N, N, N-trimethylaminobutyrate. Other names for acetyl-L-carnitine include: acetyl-levocarnitine, acetylcarnitine, l-acetylcarnitine, levacecarnine, and ST-200.

Acetyl-L-carnitine may support healthy cardiac function. It may have antioxidant and anti-apoptotic activity.

Acetyl-L-carnitine levels may decrease with advancing age. However, because it is not an essential nutrient, true deficiencies do not occur.

Most research involving acetyl-L-carnitine has used 500 mg three times per day, though some research has used double this amount. You should consult with your doctor, pharmacist, or nurse about how much acetyl-L-carnitine you should take. The dosage depends on the strength of the medicine and the reason you are taking acetyl-L-carnitine. If you are using acetyl-L-carnitine without first consulting your caregiver, follow the directions on the label. Do not take more acetyl-L-carnitine or take it more often than what is written on the directions.

Acetyl-L-carnitine is a molecule that occurs naturally in the brain, liver, and kidney. It is also available as a dietary supplement.