Alpha-lipoic acid (also called lipoic acid) is a natural anti-oxidant that can help diabetics control blood sugar and reduce symptoms of peripheral neuropathy. Preliminary studies of alpha-lipoic acid suggest additional uses. But our tests and ratings of alpha-lipoic acid supplements show that two brands contained less of this ingredient than promised on their labels. Similar problems have been reported by ConsumerLab.com in past years. A third product failed the alpha-lipoic acid review for making claims that the FDA only permits on drugs.
The remaining seven alpha-lipoic acid products selected for testing by ConsumerLab.com met standards for ingredient quality, as did five other products that passed ConsumerLab.com's voluntary certification testing. None of the alpha-lipoic acid products exceeded contamination limits for lead.
You must subscribe to get the full test results for alpha-lipoic acid supplements along with ConsumerLab.com recommendations and quality ratings for alpha-lipoic acid. You will get results for 15 different brands of alpha-lipoic acid supplements.
In this comprehensive report, you'll discover:
- Which alpha-lipoic acid supplements failed testing and which passed
- Direct comparisons and quality ratings of alpha-lipoic acid supplements
- The important difference between alpha-lipoic acid supplements that consist only of the "R-isomer" compared to those with "mixed" (racemic) isomers
- Dosage for specific uses
- Concerns, cautions, and drug interactions for alpha-lipoic acid
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