ConsumerLab.com assesses milk thistle supplements.
Many supplement makers appear to be using substandard milk thistle extract ingredient in their products, ConsurnberLab.com said. This can happen if they rely on non-specific tests, such as UV spectrophotometric analysis, which falsely inflate the silymarin content of an extract by counting other compounds that are not silymarin. In contrast, ConsumerLab.com used a highly specific HPLC method to test the products. Some milk thistle ingredient suppliers offer a higher-priced extract (certified with the HPLC test) and a lower-priced extract (certified with the non-specific UV test). FDA does not set standards for the quality of herbal supplements nor specify how they must be tested, so manufacturers may choose either form of milk thistle.
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|Title Annotation:||Industry News|
|Date:||Jan 1, 2013|
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