White Plains, New York, March 22, 2016 —
Rhodiola (R. rosea
) supplements are promoted to treat depression, anxiety, and fatigue — but do they really work? And do products on the market contain the right species, amounts, and appropriate doses of R. rosea
? Adulteration is a known issue
with R. rosea
supplements. ConsumerLab.com recently reviewed the clinical evidence and purchased nine R. rosea
supplements in the U.S., testing them to see whether they contained their expected amounts of rosavins and salidroside - key marker compounds which may also play a role in the herb's activity. Products made from herb powders were additionally tested to be sure they did not exceed contamination limits for lead, cadmium, and arsenic.
ConsumerLab.com's tests revealed that that one product contained just one-tenth of the amount of rosavin compounds expected and another contained only half. Among the products which passed testing (including four products tested through CL's voluntary Quality Certification Program
), ConsumerLab identified two as its "Top Picks," as they contained the expected amounts of R. rosea
compounds in doses most closely resembling what has been shown to be effective in clinical studies and at lowest cost to the consumer.
The test results and product ratings are now available in ConsumerLab.com's Rhodiola Rosea Supplements Review
. The report summarizes the clinical evidence regarding the use of R. rosea, dosage, what to look for on labels, safety and potential drug interactions. Tests and comparisons are included for the following products: Bluebonnet Rhodiola Rosea, Enzymatic Therapy Rhodiola Energy, Gaia Herbs Rhodiola Rosea, GNC Herbal Plus Rhodiola Extract, Herb Pharm Rhodiola, Nature's Plus Herbal Actives Rhodiola, Nature's Way Rhodiola Rosea, New Chapter Rhodiola Force 300, Puritan's Pride Rhodiola Root Extract, Solaray Super Rhodiola, Solgar Rhodiola Root Extract, Thorne Research Rhodiola, TwinLab CleanSeries Pre-Workout Activator, and Vitamin World Rhodiola Root.
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.