Tests performed by independent product tester Consumerlab.com revealed that five out of eight ginkgo biloba supplements contain adulterated material, are contaminated, or do not meet their label claims.
Of the seven gingko supplements tested, two appeared to contain adulterated material, two contained less gingko than claimed on their labels, and one did not identify the part of the gingko plant used in the supplement – an FDA labeling requirement. Even more alarmingly, one of the two supplements that did meet their label claims was contaminated with lead.
Just three supplements passed Consumerlab.com’s rigorous testing - Freeda Ginkgo Biloba, Ginkgo-Go! Ginkgo Biloba Extract, and Vitamin Shoppe’s Standardized Herbs Ginkgo Biloba Extract.
Adulteration Suspected with Some Memory Supplements. Consumerlab.com November 18th 2008.
http://www.worldhealth.net/news/majority_of_ginkgo_products_do_not_meet_
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