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Home » Health » Formula

Product ID: PURRLA6
Pure Encapsulations - R–Lipoic Acid (stabilized), 60 caps, Antioxidant Support, Specialty Formulation
Pure Encapsulations - R–Lipoic Acid (stabilized), 60 caps, Antioxidant Support, Specialty Formulation
R–Lipoic Acid (stabilized) is a specialty nutrition supplement made by Pure Encapsulations, manufacturers of hypo allergenic nutrition supplements. Every batch of finished products are tested and certified by independent laboratories. All products are manufactured under conditions similar to those employed in making pharmaceutical grade drugs and complies with the FDA GMP guidelines. More Information on the Manufacturing and Quality Control of this supplement.

About R–Lipoic Acid (stabilized):

*Potassium–R–lipoate is a highly bioavailable and stable potassium salt of R–lipoic acid. Regular R–lipoic acid is heat sensitive and may polymerize extensively, decreasing its absorption significantly. In fact, regular R–lipoic acid may need to be refrigerated and may only have a shelf life of six months. On the other hand, heating potassium–R–lipoate to 150°C (302°F) for 6 hours did not result in loss of activity and revealed less than 0.3% polymerization. In real–time stability tests, potassium–R–lipoate remained stable after 18 months. As an added assurance, Pure Encapsulations issued an independent accelerated stability test, in which potassium–R–lipoate was stable over a simulated 18 month period. Furthermore, Pure Encapsulations R–Lipoic Acid (stabilized) delivers 100 mg of actual R–lipoic acid per capsule from 250 mg of potassium–R–lipoate salt.

The natural R isomer of alpha–lipoic acid may provide enhanced antioxidant activity, energy production, and general metabolic function. In a recent in vitro study at the Buck Institute for Aging in California, R–lipoic acid moderated oxidative stress in neurons. A related study demonstrates the ability of R–lipoic acid to support memory tasks in animals by supporting mitochondrial function and protecting cells from free radicals.

An animal study suggested that R–lipoic acid supported healthy glucose metabolism and bile flow in the liver. Additional studies suggest that R–lipoic acid offers support for glucose metabolism in skeletal muscle. A University of California Berkeley study also indicates that R–lipoic acid may be protective against age–related oxidative stress in the liver. Furthermore, a study at Oregon State University established a potential role for R–lipoic acid in protecting the heart from age–related oxidative stress.

This potassium salt of R–lipoic acid provides a highly stable and bioavailable form of R–lipoic acid, with the potential for enhanced antioxidant protection and metabolic support.

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Ingredients and Dosage:


each vegetable capsule contains:

R–lipoic acid (from 250 mg potassium–R–lipoate) 100 mg.
vitamin C (as ascorbyl palmitate) 5 mg.
(hypo–allergenic plant fiber added to complete capsule volume requirement)
other ingredients: cellulose, calcium, potassium carbonate


1–2 capsules per day, in divided doses, with meals.

* These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. See Disclaimer

See Also:

Vitamins and Nutrition Infocenter at

Vitamins Knowledgebase at

Product Specifications and More Information:


We generally ship within 5 business days. Please refer to our shipping policies for information about estimated shipping time and your options.


1 bottle contains: 60 capsules

Also Available in 120 capsules/bottle

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List Price: $41.20
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