By Markham Held for Prevention.com
From Echinacea to ginkgo biloba, herbal supplements are a $60-billion business in the U.S., but most of the products you’ll find at your local drug store or supermarket are mislabeled, contaminated or—in many cases—wholly without the herb you thought you were buying, shows a new study published in in the journal BMC Medicine.
Researchers from Canada and India tested more than 90 different herbal products—including capsules, powders, and teas—from 12 of the industry’s largest producers. Here’s what they found:
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