R-alpha lipoic acid with BioEnhanced® Na-RALA

  • Buy 2 for EUR 55.95 each and save 19%
  • Category: Immune System & Antioxidant
  • Contains BioEnhanced® Na-RALA
  • Pharmaceutical quality
  • With 100 mg of R-Alpha Lipoic Acid & 150 mcg of Biotin
  • 180 vegetable capsules
Out of stock
EUR 68.95
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R-Alpha Lipoic Acid Bio Enhanced® Na-RALA by Doctor's Best

Doctor's Best's R-Alpha Lipoic Acid contains a combination of dextrorotatory (R) alpha lipoic acid and biotin. R-alpha lipoic acid is a fatty acid that occurs naturally in every cell of the body, where it plays a vital role in energy metabolism. Biotin, or vitamin B8, belongs to the B vitamins and is the beneficiary of various health claims. The two ingredients together form a powerful synergy.


  • Powerful combination of R-alpha lipoic acid and biotin
  • Biotin promotes energy metabolism
  • Biotin benefits hair and skin
  • Biotin contributes to normal protein metabolism
  • Biotin contributes to normal carbohydrate metabolism
  • Biotin contributes to normal fat metabolism
  • Biotin is beneficial for mental balance
  • Biotin benefits the mucous membranes
  • Biotin supports the normal functioning of the nervous system
  • Natural, biologically absorbable R-alpha lipoic acid
  • Contains patented Bio Enhanced® Na-RALA
  • Contains no gluten or soy; GMO-free
  • Suitable for vegetarians and vegans

Water- and fat-soluble

R-alpha lipoic acid is a natural substance first isolated in 1951. At first it was thought to be a B vitamin; it later turned out to be a sulfur-containing fatty acid and antioxidant. As a nutrient, it has powerful and unique characteristics. The antioxidant is both water- and fat-soluble. This molecular capacity renders R-alpha lipoic acid available to almost all body systems. As we age, the endogenous ability to synthesize alpha lipoic acid diminishes.

The universal antioxidant: widely applicable

R-alpha lipoic acid is a molecular multitasker catering to a wide variety of functions. Because the human body itself can produce small amounts, it is seen as a condition-specific nutrient. This means that you must ensure adequate intake either through food or nutritional supplements. R-alpha lipoic acid is found in small amounts in the diet, notably in organ meats. It is well absorbed from the gastrointestinal tract and can easily disperse throughout the body.

Natural R-alpha lipoic acid versus synthetic S-alpha lipoic acid

Alpha lipoic acid comes in two forms, called R-alpha lipoic acid and S-alpha lipoic acid. R and S alpha lipoic acid are enantiomeric isomers: molecules that appear as mirror images of each other. R-alpha lipoic acid is naturally synthesized by humans, animals and plants. S-alpha lipoic acid is formed during the chemical synthesis of alpha lipoic acid, which produces a racemic mixture (two equal parts) of the two enantiomers. S-alpha lipoic acid is often used in research.

BioEnhanced® Na-RLA

It is well-documented that R-alpha lipoic acid is more bioavailable than the S form. Doctor's Best Stable R-alpha Lipoic Acid contains BioEnhanced® Na-RLA, a stable form of the sodium salt of R-alpha lipoic acid (RLA). Pure R-alpha lipoic acid is a highly unstable molecule that tends to polymerize when exposed to heat, light or moisture. BioEnhanced® Na-RLA is a stabilized form of R-alpha lipoic acid that does not break down at high temperatures. It therefore has a higher bioavailability and does not contain any residual solvents.

About Doctor's Best

Doctor's Best product range now offers over 200 nutritional supplements. Doctor's Best produces nutritional supplements based on scientific research on beneficial nutrition. It was founded in 1990 by a doctor with an interest in beneficial nutrition. Doctor's Best works with nutritionists in choosing carefully researched ingredients that are grown around the world. The qualitatively superior end products are developed according to the latest scientific insights. Mainly branded raw materials are used and the supplements are rigorously tested at every step of the manufacturing process, from raw material to finished product. The production process follows the guidelines for Current Good Manufacturing Practice (cGMP). This results in state-of-the-art nutritional supplements.

Standardized branded products

Doctor's Best almost exclusively uses proprietary and standardized brand sources of official trademarks that have been thoroughly researched as they appear in products. The authenticity of these ingredients is guaranteed in all products. Doctor's Best never uses second-choice alternatives. This results in a qualitatively superior line of supplements with outstanding bioavailability levels.

More Information
Product Name
R-alpha lipoic acid with BioEnhanced® Na-RALA
Doctors Best
180 capsules
User Instructions

Take 1 capsule daily preferably on an empty stomach or as recommended by a healthcare practitioner.

Ingredients per Serving

150mcg D-Biotin 300%*, 100 mg R-lipoic acid.

EU Norm
*RDA = Recommended Daily Allowance
Other Ingredients

Modified cellulose (vegetarian capsule), microcrystalline cellulose, rice powder, silicon dioxide, magnesium stearate (vegetable source).

Vegan, Vegetarian
Storage: see label. Keep out of the reach of children. Consult an expert before use in case of pregnancy, breastfeeding, illness or medication.
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