Dietary Supplement. Metabolizes fat into energy. Supports cardiovascular function. TwinLab Mega L-Carnitine Tablets contains only L-Carnipure L-Carnitine, and does not contain any synthetic D-Carnitine or Dl-Carnitine. D-Carnitine and Dl-Carnitine are less effective than L-Carnitine. D-Carnitine and Dl-Carnitine are not recommended by Twinlab because of reported adverse physical side effects. L-Carnitine is an amino acid. No sugars, starch, flavors, colors or preservatives. No corn, yeast, wheat or milk derivatives. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.)