Alpha-lipoic acid (ALA) is a sulfur-containing fatty acid that performs vitamin-like roles in the body. Also known as "lipoic acid" or "thioctic acid," ALA functions, in a similar way to B complex vitamins, as a co-enzyme in the metabolism of carbohydrates that produces energy inside cells for the body’s metabolic needs. ALA is required for synthesis of "acetyl CoA," a key metabolite in the cellular process that turns glucose (blood sugar) into energy. Because the body produces ALA on its own, it is not classified as a true vitamin. As with other so-called "non-essential" nutrients, however, internal ALA production may not always be optimal. Alpha-lipoic acid functions as both a water-soluble and fat-soluble antioxidant. (Antioxidants neutralize free-radicals, normal by-products of metabolism that, while necessary at normal levels, may damage tissues over time if not properly kept in check by antioxidants.) ALA’s ability to act upon free radicals in both a watery and fatty environment makes it a highly versatile antioxidant. In the body, alpha-lipoic acid can be converted (reduced) to DHLA, or dihydrolipoic acid. Together, these two forms of ALA make up a "redox couple," which means that each form can chemically change into the other and back again. DHLA also functions as an antioxidant. How “Sustained Release” Works Using a highly sophisticated process involving mixing and compression, a specialized form of cellulose is combined with ALA, which results in substantial lengthening of the time required by the stomach to digest and release the nutrient into the small intestine. This enables the ALA to be slowly absorbed by the system, thereby maintaining and optimal concentration of effective antioxidant in the bloodstream throughout the day. Alpha Lipoic Acid occurs in two forms, designated "R" and "S". Studies suggest that R-alpha lipoic acid, the natural form, is more biologically active than the S form. Like ALA, RLA recycles antioxidant nutrients, such as vitamin C and E, and helps maintain healthy blood sugar levels when used as part of the diet. Benefits Supports the Body’s Defense Against Free Radicals* Recycles Antioxidant Nutrients such as Vitamin C and Vitamin E* Helps Maintain a Healthy Blood Sugar Level when used as part of the diet* Alpha-lipoic Acid––the "Ideal Antioxidant" The antioxidant potential of a substance is based on a number of criteria, including: 1) Ability to quench specific free-radicals. 2) Ability to bind or "chelate" metal ions that can generate free radicals. 3) Supports function of other antioxidants. 4) Absorption/bioavailability. 5) Concentration in tissues, cells and extra cellular fluids. 6) Ability to function as an antioxidant in fatty and watery environments. The "ideal antioxidant" would meet all the above criteria. Very few antioxidants do, yet a particular antioxidant with but a few of the characteristics is still valuable and effective. Vitamin E, for example, is one of the most important dietary antioxidants, yet it only works in fatty environments such as cell membranes. As a team, ALA and DHLA come close to the ideal, for the following reasons:1,2,3 1) ALA is easily absorbed when consumed orally. 2) ALA is readily converted to DHLA in various tissues. 3) As a pair, ALA and DHLA neutralize superoxide, hydroxyl, peroxyl, and hypochlorus radicals. 4) ALA and DHLA form stable complexes with metal ions such as iron, manganese, copper and zinc ions. 5) ALA and DHLA scavenge free radicals in fatty environments and watery environments. 6) DHLA recycles other important antioxidants. DHLA-regenerates vitamin C, vitamin E and glutathione Within the cell, antioxidants work as a team to keep free radicals from damaging cell structures. In order to neutralize a free radical, an antioxidant such as vitamin C must give up an electron, which mean it becomes oxidized. Before it can function as an antioxidant once again, it must be regenerated back to its "reduced" form, by gaining an electron to replace the donated electron. For this, it needs the help of other ant