From the Manufacturer's Label:
Superior Bioavailability and Acitvity**
Jarrow Formulas® Stabilized R-Alpha Lipoic Acid (Bio-Enhanced® Na-RALA) is R-(+)-Alpha Lipoic Acid (RALA). It is heat and shelf stable and exhibits high bioavailability. Most alpha-lipoic acid supplements include equal amounts of the (R) and (S) forms. However, only RALA is found naturally in the body. RALA is a unique cofactor in energy production and helps regulate glucose and lipid metabolism.** RALA promotes the synthesis of glutathione and the induction of Phase II detoxification enzymes.** d-Biotin is a natural cofactor and may compliment RALA in promoting mitochondrial health.**
Manufactured by Jarrow Formulas®No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.