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Product Review: St. John's Wort Supplements Review
 

Initial Posting: 9/2316 
St John's Wort Supplements Reviewed By Consumerlab.com Only 40% of St. John's Wort Supplements Pass Tests

Over 20,000% Difference in Strength of Herbal Antidepressants

Find Out Now If Yours Passed!


Alphabetical list of St. John's wort supplement brands in report
Gaia Herbs St. John's Wort Flower Buds & Tops Shaklee MoodLift Complex Vitacost St. John's Wort Extract
Nature's Way Perika St. John's Wort Standard Process MediHerb St. John's Wort Vitamin Shoppe St. John's Wort Extract
NOW St. John's Wort Swanson St. John's Wort Whole Foods St. John's Wort
Planetary Herbals Full Spectrum St. John's Wort    
Make sure the St. John's wort supplement you take passed our test and is right for you!
Isn't your health worth it?
Does St. John's wort work? Yes, extracts of St. John's wort have been shown to be effective in treating mild to moderate forms of major depression. However, ConsumerLab.com discovered that 6 out of 10 herbal supplements did not meet quality standards

The biggest problem uncovered by ConsumerLab.com was that many products did not contain the key plant compounds (hypericin and/or hyperforin) listed on their labels or expected based on the claimed amounts of St. John's wort. For example, the amount of hypericin found in daily servings of the supplements ranged from as little as 0.11 mg to 2.6 mg — a 20-fold difference. There was even greater variation in amounts of hyperforin, which ranged just 0.13 mg to 36.4 mg. This means you could be getting 280 times as much hyperforin from one St. John's Wort supplement than from another. These enormous differences are likely to impact the effectiveness of products.

In short, some of the St. John's wort supplements on the market seem to have little of the herb while others provide substantial and clinically meaningful amounts. 

All supplements were further tested for potential contamination with the heavy metals arsenic, cadmium, and lead. All pills were checked to be sure they would break apart properly to release their ingredients.

You must be a member to get the full test results and independent quality ratings for St. John's wort supplements along with ConsumerLab.com's recommendations of the best St. John's wort supplements. In this comprehensive report, you'll discover:

    • Which St. John's wort supplements failed testing, which passed, and which one is ConsumerLab.com's Top Pick
    • Key differences in quality and ingredients among St. John's wort supplements
    • Which supplements are most like clinically-tested St. John's wort extract 
    • Price comparisons of St. John's wort supplements to help you find the best quality St. John's wort at lowest cost
    • Dosage recommendations for the antidepressant use of St. John's wort extracts and other herbal preparations
    • Concerns, cautions, side-effects and many drug interactions to avoid with St. John's wort

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ConsumerLab.com Answers -- for St. John's Wort Supplements Review
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I take St. John's wort for depression. Your report notes that it can interact with other medications. Would taking it several hours apart from other meds avoid this interaction? Get the answer >>

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