Quote:
Originally Posted by Streetlegal
What confuses me more is that the same brand (Doctor's Best) markets both Alphalipoic acid and R-Lipoic acid.
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From their Web site what they sell as Alpha Lipoic Acid contains a 50:50 mixture of active R-lipoic acid and inactive S-lipoic acid (what chemists call a racemic mixture) but what they sell as R-Lipoic Acid only contains the active form.