"The wide variation across products means that some St. John's wort supplements may be helpful for depression, while others may not contain enough of the herb to have a meaningful effect," said ConsumerLab.com President Tod Cooperman, M.D. The high failure rate may be attributable to adulteration of St. John's wort extracts with dyes which resemble St. John's wort when tested using outdated analytical methods. ConsumerLab.com tested products using a method which identifies the hypericin molecule and is not "tricked" by dyes. The FDA does not specify which methods manufacturers must use to verify the quality of ingredients and supplements. Supplements were also tested by ConsumerLab.com for potential contamination with the heavy metals arsenic, cadmium and lead and pills were checked to be sure they would break apart properly to release their ingredients.
ConsumerLab.com was able to identify four St. John's wort supplements which passed all of its quality tests and it identified a "top pick" among them.
ConsumerLab.com's St. John's Wort Supplements Review is now available online at https://www.consumerlab.com/
The report summarizes the clinical evidence regarding the use of St. John's wort, including differences between forms (extracts and herb powders), dosage, what to look for on labels, possible side-effects, and potential drug interactions.
Founded in 1999, ConsumerLab.com is a leading provider of consumer information and independent evaluations of products that affect health and nutrition. Membership to ConsumerLab.com is available online and provides immediate access to reviews of more than 1,000 products from over 400 brands. The company is privately held and based in Westchester, New York. It has no ownership from, or interest in, companies that manufacture, distribute, or sell consumer products.
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