Alpha-lipoic acid (ALA) contains two forms - designated as R-lipoic acid (R-ALA) and S-lipoic acid (S-ALA) - that are mirror images of each other. Naturally occurring ALA is in the R form, where it functions as an essential cofactor for many enzymes involved in energy production. In addition, R-lipoic acid has important characteristics - significant antioxidant effects in particular - that contribute to liver, nerve, and eye health.

Dietary supplements of ALA are generally comprised either of R-ALA by itself or a mixture of R-ALA and S-ALA. Studies indicate the R-ALA form appears to be better absorbed, with twice as much R-ALA than S-ALA appearing in the bloodstream after an oral dose. Hence, R-ALA is the best form utilized by the body.

Thorne Research provides R-lipoic acid bound to sodium - the most bioavailable form of R-lipoic acid.

Ingredients:

One Capsule Contains: R-Lipoic Acid 100 mg.

Other Ingredients: Hypromellose (derived from cellulose) capsule. May contain one or more of the following hypoallergenic ingredients to fill space - MagnesiumCitrateLaurate, Leucine, Silicon Dioxide.

Suggested Use: One capsule once to two times daily, or as otherwise directed by a health-care practitioner.

ALLERGY WARNINGS: This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.

EXCIPIENT FREE: This product does not contain wheat, gluten, corn, yeast, soy, egg, dairy products, or artificial colors, sweeteners, or flavors. This product also does not contain lactose, palmitic acid, or magnesium, calcium, or vegetable stearates.

PREGNANCY WARNING: If pregnant or nursing, consult your health-care practitioner before using this product.

INTERACTIONS/CONTRAINDICATIONS: There are no known adverse interactions or contraindications at publication date.