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Product Review

Mangosteen Juice and Supplements Review Article

What Are the Benefits of Mangosteen Juice and Supplements? Find Out What Mangosteen Can and Cannot Do For Your Health.

Product Review

Dark Chocolates, Cocoa Powders and Supplements Review

Many Dark Chocolates and Cocoa Powders Fail Safety Tests

Cocoa and Dark Chocolate Review 2025

Product Review

Green Coffee Bean Extract Supplements Review (for Weight Loss)

Choose the Best Green Coffee Bean Extract. 50% of Green Coffee Bean Extract Supplements Don't Deliver Expected Ingredients.

Green Coffee Bean Extract Supplements Reviewed by ConsumerLab.com

News Release

February 06, 2025

Best Joint Health Supplements, According to ConsumerLab Tests

White Plains, NY, February 6, 2025 — Recent ConsumerLab tests of popular joint health supplements found several contained far less of one or more key ingredients than claimed.

CL Answer

Does the FDA approve laboratories that test supplements?

Are there FDA approved & registered laboratories for dietary supplements? Learn more about laboratories that are registered with the FDA.

Does the FDA Approve Laboratories That Test Supplements? -- supplement capsules in glassware in laboratory

CL Answer

Can I trust ConsumerLab.com? How are its tests paid for?

Learn more about ConsumerLab.com's clinical testing policy and procedures, including information on our independent testing and product reviews. Our answer explains.

CL Logo 4-18-23

News Release

February 25, 2024

Top-rated Vitamin and Supplement Brands and Merchants for 2024 Based on Consumer Satisfaction

White Plains, New York, February 25, 2024 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on over 10,000 responses collected in November/December 2023.

News Release

March 11, 2022

Best Magnesium Supplements Identified by ConsumerLab

  White Plains, New York, May 12, 2022 — Nearly half the U.S. population does not get adequate amounts of magnesium and can benefit from increasing magnesium intake from foods or supplementation.

CL Answer

Does osha root have health benefits and is it safe?

Osha root extracts are commonly promoted for congestion, coughs, throat irritation, and other uses. Find out if research supports these uses, and learn if osha root is safe.

Dried osha root and vial containing osha root extract

CL Answer

Mullein Tea: Possible Health Effects and Safety

Mullein tea is often promoted for relieving symptoms of lung conditions, including coughing, hoarseness, sore throat, and shortness of breath. Find out if there is evidence to support these uses, and learn about possible side effects of mullein.

a cup of mullein tea on a table next to mullein flowers and leaves

CL Answer

What are the health effects of apigenin and is it safe?

Apigenin, a flavonoid compound, is promoted for sleep, depression, cancer, and other conditions. Find out if it works and if it's safe.

Apigenin capsules on wooden spoon along with a chamomile flower

CL Answer

Can I trust lab reports and Certificates of Analysis provided by supplement manufacturers?

Lab reports and Certificates of Analysis are provided by supplement manufacturers, but sometimes include incorrect testing and "dry labbing". ConsumerLab.com's answer explains.

Can I trust lab reports provided by supplement manufacturers?

CL Answer

Are vitamins and supplements from Canada of better quality because they are licensed?

Find out if Canadian vitamins and supplements are better quality because they are licensed, what it means to for a product to have an Natural Product Number (NPN) in Canada, and if vitamins and supplements in Canada are tested for quality and purity. ConsumerLab.com's answer explains.

Made in Canada symbol

CL Answer

What are the health benefits of luteolin, and is it safe?

Find out if luteolin, a compound found in many fruits and vegetables, is beneficial for cancer, heart health, skin aging, age-related cognitive decline, and other conditions, and learn if it's safe.

Luteolin containing vegetables including celery peppers lettuce and spinach

CL Answer

Is MitoQ a better form of CoQ10?

MitoQ information, including how it is absorbed in the body and how it compares to CoQ10.

Is MitoQ a better CoQ10? -- bottle of MitoQ

CL Answer

Schisandra Berry Supplements: Health Benefits and Safety

Schisandra berry extracts and supplements are promoted to improve mood and sleep, liver health, muscle strength, and symptoms of menopause. Find out if they work and are safe, including side effects and drug interactions.

Schisandra 4

News Release

February 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.

Clinical Update

2/07/2023

Strontium and Blood Tests

Strontium is included in some "bone health" supplements, but be aware that very high doses of strontium may interfere with blood tests for calcium and bone density scans. Get the details in the Concerns and Cautions section of our Calcium and Bone Health Supplements Review, which includes our Top Picks among products.

Also see: Which vitamins and supplements should be stopped before getting blood work and laboratory tests?

Recalls & Warnings

April 06, 2026

Jamieson Joint Pain, Magnesium, and Maca Supplements Recalled

On April 1, 2026, Health Canada (the Canadian equivalent of the FDA) announced that Jamieson Laboratories recalled certain Jamieson Joint Pain Relief, Magnesium Bisglycinate, and Maca supplements due to defective tamper-evident seals.

News Release

February 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.

News Release

March 15, 2017

ConsumerLab.com Reveals Best and Worst Vitamin C Supplements -- 20% Fail ConsumerLab.com Tests of Quality

White Plains, New York, March 15, 2017 — Many people take large doses of vitamin C believing it will improve their health, prevent colds or reduce the risk of disease — but will it really? And when choosing a vitamin C supplement, can consumers be sure it contains what it claims? To ...

News Release

December 21, 2016

Best CoQ10? ConsumerLab.com Tests Popular CoQ10 and Ubiquinol Supplements and Reveals Its Top Picks

White Plains, New York, December 21, 2016 — Although CoQ10 and ubiquinol are among the most popular supplements, wide variations in price, dosage, absorption and bioavailability can make choosing the right product a difficult task. To help, ConsumerLab.

News Release

February 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.

News Release

February 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.

News Release

February 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.

News Release

January 29, 2014

You May Be Getting More Vitamin C Than You Think from Some Supplements, Cautions ConsumerLab.com -- 27% of Vitamin C Supplements Don't Meet Label Claims in Recent Tests --

White Plains, New York, January 29, 2014 — It's cold and flu season, which means many people are reaching for vitamin C, as it may modestly reduce cold symptoms (although it won't prevent a cold).

News Release

February 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.

News Release

March 12, 2012

Review of vitamin C supplements by ConsumerLab.com finds many of high quality but a wide range in prices

White Plains, New York — March 8, 2012 — Vitamin C may boost the immune system and is critical for maintaining healthy connective tissue, but do you need to take a supplement and, if so, how do you find one that is right for you and at the best price? ConsumerLab.

News Release

February 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.

News Release

February 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.

News Release

July 10, 2009

Nine joint health supplements fail ConsumerLab.com quality review -- Lead contamination, missing ingredients and other problems found in supplements for people as well as for dogs, cats and horses; Many others approved

WHITE PLAINS, NEW YORK — JULY 10, 2009 — Nine supplements for osteoarthritis that ConsumerLab.com recently selected for testing were found to be contaminated with lead, lack all or some of a key ingredient or have other quality problems.

News Release

March 07, 2008

ConsumerLab.com finds most vitamin C supplements pass quality tests but one short on ingredient and some exceed tolerable levels

WHITE PLAINS, NEW YORK — MARCH 7, 2008 — ConsumerLab.com reported test results today for a wide variety of vitamin C supplements. Vitamin C is the top-selling single vitamin in the U.S., with sales of $863 million in 2006 according to Nutrition Business Journal.

News Release

February 06, 2008

Consumers warned of lead in some turmeric supplements — Highest lead level ever reported by ConsumerLab.com; Lack of active compound also a problem

WHITE PLAINS, NEW YORK — FEBRUARY 6, 2008 — Turmeric supplements have become popular in recent years but ConsumerLab.com warned today that some products contain high amounts of lead. Recent tests found a popular brand to contain 18.

News Release

January 23, 2008

ConsumerLab.com announces brands and merchants rated highest by dietary supplement consumers

WESTCHESTER, NEW YORK — JANUARY 23, 2008 — ConsumerLab.com announced today the names of brands and merchants which received the highest overall consumer satisfaction ratings in the ConsumerLab.com 2008 Survey of Vitamin and Supplement Users.

News Release

November 13, 2007

ConsumerLab.com finds some "red wine" supplements deliver less resveratrol than expected; Wide range in dose and price

WHITE PLAINS, NEW YORK — NOVEMBER 13, 2007 — ConsumerLab.com reported today that its tests of supplements containing resveratrol — a compound promoted as "life-extending" — revealed two products providing only 27% and 58% of their listed amounts of resveratrol.

News Release

October 12, 2007

ConsumerLab.com finds generic antidepressant behaves differently from original drug. May explain complaints by patients. — Generic drug equality questioned

WHITE PLAINS, NEW YORK AND DURHAM, NORTH CARLOLINA — OCTOBER 12, 2007 — ConsumerLab.

News Release

March 06, 2007

ConsumerLab.com produces series of free online seminars about dietary supplements — First seminar on "joint health" now available

WHITE PLAINS, NEW YORK — MARCH 6, 2007 — ConsumerLab.com announced today that it is producing and webcasting a series of free, online audio seminars, or "webinars," that explain the use of popular types of dietary supplements.

News Release

December 05, 2005

Consumerlab.com reaffirms problems with Trimspa X32

Westchester, NY — December 5, 2005 — ConsumerLab.com responded today to a press release issued by TRIMSPA seeking to refute ConsumerLab.com's test results for TRIMSPA X32, a popular weight loss supplement. ConsumerLab.

Recalls & Warnings

July 25, 2024

West Coast Laboratories Warned for Manufacturing, Labeling Violations

On March 12, 2024, the FDA issued a Warning Letter to West Coast Laboratories, Inc.

Recalls & Warnings

November 18, 2003

Supplement Promoted As Cancer Treatment Removed from Market

On November 10, 2003, the Food and Drug Administration (FDA) announced that NBTY, Inc., of Bohemia, N.Y.

Recalls & Warnings

March 13, 2020

FDA Finds Problems at 52% of Supplement Manufacturing Sites in U.S. and 42% Abroad

ConsumerLab.com has obtained results of the FDA's inspections in Fiscal Year 2019 (October 1, 2018 - September 30, 2019) of 598 dietary supplement manufacturing facilities in the U.S.

Recalls & Warnings

June 10, 2024

StellaLife Homeopathic Oral Rinse & Spray Recalled Due to Yeast, Mold, and Bacteria

On June 5, 2024, HomeoCare Laboratories, Inc.

Recalls & Warnings

November 18, 2024

Manufacturer of Grandma’s Herbs Kidney Warned by FDA

On October 20, 2023, the FDA issued a warning letter to Top Health Manufacturing, LLC, manufacturer of Grandma’s Herbs Kidney supplement, following an inspection of the company’s facility that found its products to be adulterated because they were, packed, labeled or held under ...

Recalls & Warnings

April 09, 2006

Sellers of Children’s Weight-Loss Product Settle FTC Charges

On April 6, 2006, the Federal Trade Commission (FTC) announced that the marketers of Pedia Loss, a purported children’s weight-loss product, and Fabulously Feminine, a supposed female libido enhancement product, had agreed to settle Federal Trade Commission charges that they made false and ...

Recalls & Warnings

January 12, 2022

FDA Warns Consumers Not to Use LuSys Laboratories COVID Tests Due to False Results

Update: (03/09/22) On February 17, 2022, the FDA issued a warning letter to LuSys Laboratories, Inc.

Recalls & Warnings

May 08, 2023

SD Biosensor Pilot At-Home COVID-19 Tests Recalled Due to Bacterial Contamination

On May 4, 2023, the FDA warned consumers and health care providers not to use certain lots of Roche Diagnostics’ SD Biosensor, Inc. Pilot COVID-19 At-Home Tests due to bacterial contamination in the test kit’s liquid solution.

Recalls & Warnings

July 06, 2022

Two Companies Banned From Selling Supplements to Treat Heart Disease, Neuropathy

On June 30, 2022, the Federal Trade Commission (FTC) finalized an administrative complaint order against two Texas-based companies, Health Research Laboratories, LLC and Whole Body Supplements, LLC, for making unverified claims that their products can prevent or treat disease.

Recalls & Warnings

June 16, 2004

FTC Challenges Ads for Kids’ Weight Loss Pill and Female Sexuality Supplement

On June 16, 2004 The Federal Trade Commission announced that it had charged three Florida-based companies and their principals with making false and unsubstantiated claims in connection with the advertising for “Pedia Loss,” a purported children’s weight loss product.

Recalls & Warnings

May 20, 2017

Muscle Enhancement Supplement Containing Steroid-Like Substances Recalled

On May 19, 2017, Dynamic Technical Formulations LLC issued a recall of all lots its muscle enhancement supplement Tri-Ton because it was found to contain anabolic steroid-like substances (andarine and ostarine) which are not permitted in dietary supplements.

Recalls & Warnings

September 08, 2011

FDA Warns Several Supplement Manufacturers Not Following Good Manufacturing Practices

In recent weeks, the U.S. FDA has sent warning letters to several supplement manufacturers regarding deficiencies identified during audits of their facilities and not adequately corrected. Use the links below to access the Warning Letters on the FDA website.

Recalls & Warnings

October 12, 2005

Supplement Company to Pay $2 Million Penalty For Alleged Violations of FTC Order

On October 12, 2005 the Federal Trade Commission (FTC) announced that under the terms of a consent decree approved by the it for submission by the U.S. Department of Justice (DOJ) to the federal court for approval, NBTY, Inc. (NBTY, formerly Nature’s Bounty, Inc.

Recalls & Warnings

November 20, 2020

FTC Files Complaint Against Two Supplement Companies for Deceptive Marketing

On November 20, 2020, the FTC approved a Part 3 administrative complaint against Health Research Laboratories, LLC, its owner Kramer Duhon, and Whole Body Supplements, LLC for making unverified claims that their products can prevent or treat diseases.

Recalls & Warnings

June 02, 2022

Walmart Inc. Recalls Joint Supplements With Omega-3, Glucosamine & Curcumin

On May 28, 2022, Walmart Inc. issued a voluntary recall of all lots of Artri Ajo King Joint Supplements after FDA laboratory analysis found the presence of undeclared diclofenac.

Recalls & Warnings

March 12, 2016

FDA Finds Problems at 58% of Supplement Manufacturing Sites in U.S. and Abroad

ConsumerLab.com has obtained results of the FDA's inspections in Fiscal Year 2015 (ending September 30) of 483 dietary supplement manufacturing facilities, showing that most -- 58.2% -- received letters indicating noncompliance with current Good Manufacturing Practices (cGMPs).

Recalls & Warnings

June 07, 2012

Recall of Digestive Health Supplement Due to Salmonella Concern

On June 4, 2012, Botanical Laboratories of Ferndale, WA announced the recall of 38 bottles of 33.8 oz Wellese "Digestive 3 in 1 Health " liquid dietary supplement and 275 bottles of 16 oz.

Recalls & Warnings

April 09, 2003

Recall of Dangerous Sexual Enhancement Supplement Illegally Containing Viagra Ingredient

On April 4, 2003, the U.S. Food and Drug Administration's MedWatch program announced that Ultra Health Laboratories, Inc. and Bionate International, Inc. are warning consumers not to purchase or consume a product known as Vinarol tablets.

Recalls & Warnings

June 21, 2011

FDA Seizes Probiotics Over Marketing Claims

On June 7, 2011, the U.S. FDA announced that, at its request, U.S. Marshals seized probiotic products from UAS Laboratories, Inc., of Eden Prairie, Minn. because the company markets the products as drugs.

Recalls & Warnings

December 01, 2017

Health Research Labs Agrees to Settle FTC Charges of False Claims, Deceptive Marketing of BioTherapex and NeuroPlus

On November 30, 2017, the FTC announced Health Research Laboratories LLC and owner, Kramer Duhon, agreed to settle charges that they made false claims about the company's products, BioTherapex and NeuroPlus.

Recalls & Warnings

August 25, 2009

Hepatitis Associated with Herbal Supplement Containing Artemisinin

The August 14, 2009 edition of the Center for Disease Control's (CDC) Morbidity and Mortality Weekly Report includes case report of hepatitis associated with use of an herbal supplement containing artemisinin.

Recalls & Warnings

August 18, 2017

FDA Warns Consumers Not to Use Certain Liquid Multis, Vitamin D, and Other Supplements Due to Potential Bacterial Contamination

On August 11, 2017, the FDA advised the public not to use any liquid drug or dietary supplement products manufactured by PharmaTech LLC of Davie, Florida, and labeled by Rugby Laboratories, Major Pharmaceuticals, and Leader Brands, because they have the potential to be contaminated with ...

Recalls & Warnings

March 11, 2002

Recall and Warning to Stop Use of Prostate Supplements "PC SPES" and "SPES"

Note: This posting was origially made on February 8, 2002. Additional information was added on March 11, 2002.

Recalls & Warnings

January 18, 2002

Recall of Pepsin-containing Digestive Supplements

The U.S. Food and Drug Administration (FDA) released the following Class I recall information in its January 16, 2002 Enforcement Report.

Recalls & Warnings

January 31, 2015

Maker of Soy and Zinc Warned for Manufacturing Violations

On December 18, 2014, the FDA issued a warning letter to PreMark Health Science, Inc.

Recalls & Warnings

August 21, 2014

Seller of Joint Supplement Warned for Manufacturing Violations and Drug Claims

On July 17, 2014, the FDA issued a warning letter to Klein Laboratories, Inc.

Recalls & Warnings

October 22, 2002

FDA Seizes Supplements Claiming to Treat Autism

On October 17, 2002 the U.S. Food and Drug Administration (FDA) reported that, at its request, US Marshals seized dietary supplements making drug claims from the Humphrey Laboratories of Lake Oswego, Oregon, doing business as Kirkman Laboratories. U.S.

Recalls & Warnings

December 02, 2005

Steroids Detected In Supplement

On November 30, 2005, The Washington Post reported that a dietary supplement marketed to fitness and health enthusiasts on the Internet and in body-building shops contains anabolic steroids, according to a prominent researcher.

Recalls & Warnings

June 04, 2012

FDA Warning on Supplement for Pain Relief

On June 1, 2012, the U.S. FDA warned consumers that Reumofan Plus, marketed as a “natural” dietary supplement for pain relief and other serious conditions, contains several active pharmaceutical ingredients not listed on the label that could be harmful.

Recalls & Warnings

May 17, 2012

FDA Warns of Drug Ingredients in Three Sexual Enhancement Supplements

On May 16, 2012, the U.S. FDA advised consumers not to purchase or use the following three sexual enhancement products: Boost - Ultra Sexual Enhancement Formula (sold on www.boostultra.biz), Firminite (sold on www.firminite.com), and VMaxx Rx (sold on www.vmaxxrx.com).

Recalls & Warnings

April 21, 2012

FDA Finds Prescription Drug Analog in 3 Enhancement Supplements

On April 20, 2012, the U.S. FDA advised consumers not to purchase or use the following supplements from Enhance Nutraceutical: "Instant Hard Rod," "RigiRx Plus," and "Zen Maxx." FDA laboratory analysis confirmed that each contains aminotadalafil.

Recalls & Warnings

April 03, 2012

“Japan Rapid Weight Loss Diet Pills Green” Contains Hidden Drug Ingredient

April 3, 2012: The Food and Drug Administration (FDA) is advising consumers not to purchase or use "Japan Rapid Weight Loss Diet Pills Green," a product for weight loss sold on various websites, such as www.amazon.com, and distributed by Xiushentang.

Recalls & Warnings

April 03, 2012

"France T253" Enhancement Supplement Contains Hidden Drug

April 3, 2012: The U.S. Food and Drug Administration (FDA) is advising consumers not to purchase or use “France T253,” a product for sexual enhancement. This product is promoted and sold on various Web sites, such as ebay.com.

Recalls & Warnings

February 28, 2013

Maker of Liquid Omega-3 Supplements Warned For Manufacturing Violations

On February 20, 2013, the FDA issued a warning letter to Capco Custom Packaging Inc.