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Recalls & Warnings

6/13/2014

FDA Warns "Chelation" Supplements Are Unsafe

On June 12, 2014, the FDA warned consumers not to buy or use "heavy metal chelation" supplements Captomer or Captomer-25 (by Thorne Research), because they contain DMSA (meso-2, 3-dimercaptosuccinic acid).

Product Review

Berberine and Goldenseal Supplements Review

Choose the Best Berberine & Goldenseal Supplements. CL Tests Reveal Problems With 25% of Berberine and 67% of Goldenseal Supplements.

Berberine and goldenseal supplements reviewed by ConsumerLab.com

Recalls & Warnings

9/11/2015

Thirteen Manufacturers Ordered to Stop Selling Devil's Claw Supplements

On September 9, 2015, the New York State Attorney General ordered 13 manufacturers, including Thorne Research Inc., NBTY, Inc. (Puritan's Pride) Inc., and Now Foods, to stop selling devil's claw supplements which were found to contain the incorrect species of the plant. Devil's claw extracts may have anti-inflammatory effects and are often promoted for joint pain and osteoarthritis, although evidence for this is preliminary. 

Product Review

L-Theanine Supplements Review

Find the Best L-Theanine Supplement. Find Out If L-Theanine Helps for Stress and Which Products Are Best.

L-Theanine Supplements reviewed by ConsumerLab.com

News Release

2/25/2020

Top-rated Vitamin and Supplement Brands and Merchants for 2020 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users

White Plains, New York, February 25, 2020 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 9,782 responses collected in late November and early December 2019. Respondents gave ratings of hundreds of brands and merchants of which 137 brands and 39 merchants each received at least 90 consumer ratings. Among these popular brands and merchants, those receiving the highest rating on overall consumer satisfaction within their specific market segment are listed below.

News Release

2/25/2021

Top-rated Vitamin and Supplement Brands and Merchants for 2021 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users

White Plains, New York, February 25, 2021 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 9,647 responses collected in November 2020. Respondents gave ratings of hundreds of brands and merchants of which 149 brands and 38 merchants each received at least 90 consumer ratings. Among these popular brands and merchants, those receiving the highest rating on overall consumer satisfaction within their specific market segment are listed below.

Product Review

Rhodiola Rosea Supplements Review

Do Rhodiola Supplements Help With Depression and Anxiety? Find Out and See Which Rhodiola Supplements Provide the Best Quality & Value.

Rhodiola Supplements Reviewed by ConsumerLab.com

News Release

2/25/2015

Top-rated Vitamin and Supplement Brands and Merchants for 2015 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users

Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 10,329 responses collected in November, 2014. Respondents gave ratings for 1,709 brands and 891 merchants. Of these, 115 brands and 51 merchants each received at least 100 consumer ratings. Among these popular brands and merchants, those receiving the best (highest) rating on overall consumer satisfaction within their specific market segment are listed below.

News Release

2/25/2016

Top-rated Vitamin and Supplement Brands and Merchants for 2016 Based on Consumer Satisfaction

Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 11,534 responses collected in November, 2015. Respondents gave ratings for 963 brands and 399 merchants. Of these, 108 brands and 44 merchants each received at least 100 consumer ratings. Among these popular brands and merchants, those receiving the best (highest) rating on overall consumer satisfaction within their specific market segment are listed below. [Update: see most recent results.]

News Release

2/15/2007

ConsumerLab.com survey shows brands and merchants rated highest by dietary supplement users

CONSUMERLAB.COM SURVEY SHOWS BRANDS AND MERCHANTS RATED HIGHEST BY DIETARY SUPPLEMENT USERS

News Release

2/25/2017

Top-rated Vitamin and Supplement Brands and Merchants for 2017 Based on Consumer Satisfaction

White Plains, New York, February 25, 2017 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 9,505 responses collected in late November and early December 2016. Respondents gave ratings for 155 brands and 99 merchants. Of these, 106 brands and 38 merchants each received at least 95 consumer ratings. Among these popular brands and merchants, those receiving the highest rating on overall consumer satisfaction within their specific market segment are listed below. [Update: see most recent results.]

News Release

2/25/2019

Top-rated Vitamin and Supplement Brands and Merchants for 2019 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users

White Plains, New York, February 25, 2019 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 10,931 responses collected in late November and early December 2018. Respondents gave ratings of hundreds of brands and merchants of which 145 brands and 45 merchants each received at least 90 consumer ratings. Among these popular brands and merchants, those receiving the highest rating on overall consumer satisfaction within their specific market segment are listed below.

News Release

2/25/2018

Top-rated Vitamin and Supplement Brands and Merchants for 2018 Based on Consumer Satisfaction

White Plains, New York, February 25, 2018 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 11,446 responses collected in late November and early December 2017. Respondents gave ratings of hundreds of brands and merchants of which 141 brands and 48 merchants each received at least 90 consumer ratings. Among these popular brands and merchants, those receiving the highest rating on overall consumer satisfaction within their specific market segment are listed below.

News Release

2/25/2022

Top-rated Vitamin and Supplement Brands and Merchants for 2022 Based on Consumer Satisfaction

White Plains, New York, February 25, 2022 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 8,049 responses collected in November/December 2021. Respondents gave ratings of hundreds of brands and merchants of which 143 brands and 35 merchants each received at least 90 consumer ratings. Among these popular brands and merchants, those receiving the highest rating on overall consumer satisfaction within their specific market segment are listed below.

News Release

8/13/2015

Feeling Stressed? ConsumerLab.com Reviews the Evidence for L-Theanine and Test Popular Products

White Plains, New York, August 21, 2015 — L-theanine is often promoted to reduce stress, and for conditions such as ADHD — but does it really work? ConsumerLab.com recently reviewed the evidence and purchased popular brands of L-theanine to test their quality. While products selected for testing contained their claimed amounts of L-theanine and met other quality criteria, they differed significantly in dose and price, with some high quality supplements costing nearly one-third less than other brands.

News Release

8/31/2012

ConsumerLab.com tests selenium supplements -- Finds one with less than 25% of listed amount

White Plains, New York, August 31, 2012 — ConsumerLab.com announced results today of its Product Review of Selenium Supplements. Among the supplements selected by ConsumerLab.com for testing, one was found to contain only 23.7% of its listed amount of selenium and lacked required information about the plant source of an ingredient. Six other products met ConsumerLab.com's quality criteria, having correct label information, lacking lead contamination, and, if tablets, breaking apart properly. Five additional selenium supplements tested through CL's Voluntary Certification Program also passed testing.

News Release

3/22/2016

Rhodiola: Does It Help With Depression and Anxiety and Which Brands Are Best? -- ConsumerLab.com Reviews the Evidence and Tests the Quality of Popular R. Rosea Supplements --

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.

News Release

1/20/2015

ConsumerLab.com Identifies Best Vitamin A Supplements, But Cautions That Most People Don't Need Them

White Plains, New York, January 20, 2015 — Vitamin A supplements can save your sight and reduce your risk of infection if you are vitamin A deficient. However, deficiency is rare in the U.S., where people are more likely to be at risk for excess vitamin A. For people who do need more vitamin A, such as those with liver disease or conditions which cause malabsorption, ConsumerLab.com has identified several supplements offering top quality and excellent value.

News Release

5/19/2009

Review of Magnesium Supplements by ConsumerLab.com Shows One-Quarter Fail Quality Tests

WHITE PLAINS, NEW YORK — MAY 19, 2009 — ConsumerLab.com reported today that among twelve magnesium supplements selected for testing, only nine met quality standards. One supplement contained only 45.4% of its labeled amount of magnesium, despite boasting a "GMP" (Good Manufacturing Practices) seal on its label. The same problem was found when ConsumerLab.com tested the product in 2007.  Another supplement provided only 28.8% of its promised magnesium. Lead contamination was discovered in a third product.

News Release

10/07/2009

ConsumerLab.com finds that only two-thirds of alpha-lipoic acid supplements selected for testing pass quality review -- Anti-oxidant supplements helpful to diabetics

White Plains, New York — Wednesday, October 7, — Alpha-lipoic acid (also called lipoic acid) is a natural anti-oxidant that can help diabetics reduce symptoms of peripheral neuropathy and control blood sugar, among other uses. ConsumerLab.com recently purchased a range of brands of alpha-lipoic acid supplements and tested their quality. Results of the tests, now available on ConsumerLab.com, show that two brands contained less alpha-lipoic acid than promised on their labels. Similar problems have been reported by ConsumerLab.com in past years. A third supplement failed the review for making health claims that the FDA only permits on drugs. The remaining seven alpha-lipoic acid products selected for testing by ConsumerLab.com met standards for ingredient quality, as did five other products that passed ConsumerLab.com's Voluntary Certification Program. None of the alpha-lipoic acid products exceeded contamination limits for lead.

News Release

12/12/2017

Berberine and Goldenseal: Avoid Fakes! -- ConsumerLab.com Testing Reveals the Best and Worst Supplements

White Plains, New York, December 12, 2017 — Berberine, a compound found in goldenseal root, may help to lower blood sugar in certain people, and may have other potential benefits. However, ConsumerLab.com's recent tests of popular berberine and goldenseal supplements revealed that most goldenseal products, and one berberine product, do not contain the expected amounts of berberine.

News Release

8/21/2013

Labels on Potassium Supplements May Confuse, But Product Quality is High According to ConsumerLab.com

White Plains, New York August 21, 2013 — How much potassium would you expect from a supplement called "Potassium Gluconate 595 mg"? The correct answer is just 99 mg, as ConsumerLab.com explains in its new Potassium Supplements Review, published online today. While potassium labels may be confusing to consumers, the good news is that ConsumerLab.com found the quality of supplements to be high across the products it tested in the new review. ConsumerLab.com also found that you could spend as little as one cent to get a 99 mg dose of high-quality potassium, rather than spending many times that amount.

News Release

2/12/2014

Top-rated Vitamin and Supplement Brands and Merchants for 2014 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users

Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 10,326 responses collected in November, 2013. Respondents gave ratings for 1,639 brands and 788 merchants. Of these, 105 brands and 41 merchants each received at least 100 consumer ratings. Among these popular brands and merchants, those receiving the best (highest) rating on overall consumer satisfaction within their specific market segment are listed below. (See separate news release about the most popular types of supplements.)

News Release

5/17/2017

Best Vitamin D? ConsumerLab.com Tests Popular Vitamin D Supplements and Reveals Its Top Picks

White Plains, New York, May 17, 2017 — Vitamin D is currently the most popular dietary supplement among people who regularly use supplements according to a recent survey by ConsumerLab.com. Its popularity is driven by the fact that having sufficient vitamin D in the body is associated not only with maintaining strong bones but a reduced risk of falls, heart attack, high blood pressure, depression, rheumatoid arthritis, asthma and even colds.

News Release

2/01/2011

Top-rated vitamin and supplement brands and merchants on consumer satisfaction for 2011 -- Based on ConsumerLab.com survey of vitamin and supplement users 

Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 6,010 responses collected in November, 2010. Most respondents used multiple supplements. Respondents gave ratings for 1,481 brands and 1,182 merchants that they used. Seventy brands and 33 merchants each received at least one hundred consumer ratings. Among these popular brands and merchants, those receiving the highest rating on overall consumer satisfaction within their specific market segment are listed below.

News Release

2/01/2013

Top-rated Vitamin and Supplement Brands and Merchants for 2013 Based on Consumer Satisfaction

Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 10,862 responses collected in November, 2012. Respondents gave ratings for 1,438 brands and 851 merchants. Of these, 91 brands and 40 merchants each received at least 100 consumer ratings. Among these popular brands and merchants, those receiving the best (highest) rating on overall consumer satisfaction within their specific market segment are listed below. (See separate news release about the most popular types of supplements.

News Release

8/24/2018

Few Red Yeast Rice Supplements Provide Enough Cholesterol-Lowering Compounds to Likely Be Effective, ConsumerLab Tests Reveal

White Plains, New York, August 24, 2018 — Research shows that red yeast rice, which contains naturally-occurring lovastatin compounds, can lower "bad" LDL cholesterol. However, because amounts of lovastatins are not typically listed on supplement labels, consumers have no way knowing if they are taking an effective dose. Recent ConsumerLab tests of red yeast rice supplements on the market found most did not contain amounts of lovastatins shown to lower cholesterol in clinical trials. Amounts of lovastatins in certain products were also found to have decreased substantially since the same products were tested by ConsumerLab several years ago.

News Release

2/01/2012

Top-rated vitamin and supplement brands and merchants on consumer satisfaction for 2012 -- Based on ConsumerLab.com Survey of Vitamin & Supplement Users

Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 10,260 responses collected in November, 2011. Most respondents used multiple supplements. Respondents gave ratings for 1,551 brands and 906 merchants that they used. Ninety brands and 36 merchants each received at least one hundred consumer ratings. Among these popular brands and merchants, those receiving the highest rating on overall consumer satisfaction within their specific market segment are listed below.

Product Review

NAD Booster Supplements Review (NAD+/NADH, Nicotinamide Riboside, and NMN)

How Important Is Boosting NAD+ Levels? Find Out and Learn How Booster Supplements Compare.

NAD Boosters (NAD+/NADH, Nicotinamide Ribose, and NMN)

Product Review

Iron Supplements Review (Iron Pills, Liquids and Chews)

See Which Iron Supplements Are CL's Top Picks for Different Needs

Product Review

Zinc Supplements and Lozenges Review

Find the Best Zinc Supplements and Lozenges. Have a Cold? See CL's Top Picks Among Zinc Supplements and Lozenges.

Zinc Supplements and Lozenges Reviewed by ConsumerLab.com

Product Review

Vitamin K Supplements Review (Including Calcium, Magnesium, Boron, and Vitamin D)

Should You Take Vitamin K? Beware of Products That Don't Deliver.

News Release

5/08/2012

Lead Contamination and Mislabeling in Joint Health Supplements with Glucosamine, Chondroitin, and MSM According to ConsumerLab.com

White Plains, New York, May 8, 2012 — Glucosamine, chondroitin, and MSM are popular dietary supplements for treating symptoms of osteoarthritis — worn joint cartilage. But some products are contaminated with lead, don't contain listed ingredients, or have inadequate labeling, according recent analyses by ConsumerLab.com. ConsumerLab.com purchased and tested supplements for osteoarthritis for people as well as products for dogs, cats and horses.

News Release

2/23/2017

ConsumerLab.com Reveals Best and Worst B Vitamin Supplements and Why Current Labels Often Mislead

White Plains, New York, February 24, 2017 — B vitamins and complexes are popular supplements, but labels often mislead, says a new report from ConsumerLab.com which tested, reviewed, and compared 49 supplements from the U.S. and Canada containing B complexes, B6, B12, biotin, folate, niacin, thiamin, and/or riboflavin. B vitamins are of benefit to people not able to get enough of these essential nutrients from their diets, such as many older people, those taking medicine to lower stomach acid, pregnant women and individuals with certain genetic variants.

News Release

5/23/2011

Red yeast rice supplements weaker now than in 2008; Wide variation among brands and contamination discovered by ConsumerLab.com -- Popular cholesterol-lowering supplements tested and compared

WHITE PLAINS, NEW YORK — MAY 23, 2011 — ConsumerLab.com announced today that tests of eleven red yeast rice supplements revealed enormous differences in levels of cholesterol-lowering statin compounds. Statin levels fell dramatically among brands previously tested in 2008. A potentially toxic contaminant, citrinin, was found in four of the products. Results were published online on ConsumerLab.com.

News Release

1/31/2011

Vitamin D use increased 52% in past two years according to ConsumerLab.com survey of supplement users -- Fish oil continued to surpass multivitamins as most popular supplement and Internet was most common place to buy supplements

WHITE PLAINS, NEW YORK — FEBRUARY 1, 2011 — Among people who use dietary supplements, the most popular products at the end of 2010 were fish oil, multivitamins, vitamin D, calcium and CoQ10 according to a survey by ConsumerLab.com. Use of vitamin D surged in 2010 to 56.2% of those surveyed, up from 47.9% in 2009 and 36.9% in 2008 — a 52% increase over the two-year period. The ConsumerLab.com survey is conducted each November and is based on more than 6,000 responses from a sampling of subscribers to the ConsumerLab.com free e-newsletter. Most respondents in the survey use multiple supplements.

News Release

6/16/2011

ConsumerLab.com puts multivitamins to the test

June 16, 2011, New York, NY — Laboratory test results of 60 multivitamins have shown that you can't always judge a supplement by its label—or by its price. "Consumers should know that multivitamins vary widely in quality, "says Tod Cooperman, M.D., President of ConsumerLab.com. "Fortunately, you don't have to spend a lot to get a good multivitamin."

Product Review

Vitamin C Supplements Review

Find the Best Vitamin C Supplement. Tests and Reviews of Popular Vitamin C Supplements & CL's Top Picks.

Vitamin C Supplements Tested by ConsumerLab.com

Product Review

Green Tea Review: Tea Bags, Loose Tea, Matcha Powders, and Supplements

Disturbing Findings for Some Major Brands of Green Tea. See the Test Results and Our Top Picks for Green Tea.

Green Tea Review By ConsumerLab.com

CL Answer

The maker of my multivitamin says it doesn't include folic acid because too much from supplements can be harmful. Is that true?

Learn more about the harmful effects from too much folic acid, including increased risk of prostate cancer and kidney damage.

Harm from Too Much Folic Acid ? -- Multivitamin bottle and label

Product Review

Turmeric and Curcumin Supplements and Spices Review

Find the Best Turmeric and Curcumin Supplements & Spices. Big Differences Discovered Among Brands -- Little Curcumin In Some.

Turmeric and Curcumin Supplements and Spices Reviewed by ConsumerLab.com

News Release

1/12/2016

Problems Found with 32% of Multivitamin/Multimineral Supplements -- ConsumerLab.com Identifies Good Choices for Men, Women, and Children

White Plains, New York, January 12, 2016 — You can't always judge a supplement by its label -- or by its price, according to a new report from ConsumerLab.com, which recently tested dozens of multivitamin/multimineral supplements. "Consumers should know that multivitamins vary widely in quality, with some providing far more or less ingredient than claimed," says Tod Cooperman, M.D., President of ConsumerLab.com. "Fortunately, we discovered that you don't have to spend a lot to get a good multivitamin." Americans spend over $5 billion per year on multivitamins according to Nutrition Business Journal.

Product Review

Taurine Supplements Review for People, Dogs, and Cats

Find the Best Taurine Supplements. Learn When to Use Taurine and Which Supplement is Best.

Taurine Supplements Reviewed by ConsumerLab.com

Product Review

Red Yeast Rice Supplements Review

50% of Red Yeast Rice Supplements "NOT APPROVED" in CL Tests