ConsumerLab.com uses JavaScript to provide the best possible experience for our content, but your browser has it disabled. Learn how to enable it here.

About ConsumerLab.com

Search term may appear only in full report available to members. Join now for full access.

Product Review

Quercetin Supplements Review

Find the Best Quercetin Supplements. ConsumerLab Tests Reveal Not All Quercetin Supplements Contain What They Claim.

Quercetin Supplement Reviewed By ConsumerLab.com

Product Review

Red Yeast Rice Supplements Review

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

Product Review

CLA (Conjugated Linoleic Acid) Supplements Review (for Slimming)

Choose the Best CLA Supplement. Not All CLA Supplements Contain What You Expect.

CLA Supplements Reviewed by ConsumerLab.com

Product Review

Resveratrol Supplements Review (From Red Wine, Knotweed, and Other Sources)

See Which Resveratrol Supplements Were Best In Our Tests and Comparisons. Learn What Resveratrol Can and Can't Do.

Review of resveratrol supplements tested by ConsumerLab.com, including ratings and comparisons of product quality, price, and ingredients.

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

Is Relief Factor likely to relieve aches and pains, and is it safe?

Find out if the dietary supplement Relief Factor is likely to help relieve aches and pains, if it is safe, and if it is worth the cost.

Packet of Relief Factor Quickstart

News Release

5/26/2022

50% of Red Yeast Rice Supplements Fail ConsumerLab Tests

  White Plains, New York, May 26, 2022 — Red yeast rice naturally contains cholesterol-lowering lovastatin compounds. However, recent ConsumerLab tests of popular red yeast rice products on the market revealed many did not contain any detectable lovastatin.

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.

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.

News Release

1/16/2021

Best Resveratrol Products Revealed in ConsumerLab Review

White Plains, New York, January 16, 2021 — Resveratrol supplements are promoted for a wide range of uses, including lowering cholesterol and improving cardiovascular health, improving memory, reducing inflammation and slowing age-related macular degeneration.

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.

News Release

4/01/2019

Not All Quercetin Supplements Contain What They Claim, ConsumerLab Tests Reveal

White Plains, New York, April 1, 2019 — Quercetin is a flavonoid found in foods such as onions, kale and apples. Sold as a supplement, quercetin is promoted to help with a range of conditions including prostatitis, asthma, and rheumatoid arthritis, as well as blood sugar control.

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.

News Release

5/10/2018

Big Differences Found Among Green Teas -- ConsumerLab Tests Identify Best Green Tea in Bags, Matcha, Supplements, and Bottles --

White Plains, New York, May 10, 2018 — The benefits of green tea use are associated with the presence of natural polyphenols known as catechins, such as EGCG.

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.

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.

News Release

1/15/2014

Problems Found with the Quality and Labeling of Some "Muscle Enhancement" Supplements -- Review of Creatine and Branched-chain Amino Acid Supplements Published by ConsumerLab.com

White Plains, New York, January 15, 2014 — Athletes often turn to supplements such as creatine and branched-chain amino acids (BCAAs) to enhance muscle strength and recovery. These supplements may also benefit people with muscular diseases and those recovering from knee surgery.

News Release

7/21/2010

Tests of "muscle enhancement" supplements show quality problems with some creatine and branched-chain amino acid products -- Review of Muscle Enhancement Supplements published by ConsumerLab.com

WHITE PLAINS, NEW YORK — July 21, 2010 — Athletes often turn to supplements to enhance muscle strength and recovery. New tests of such supplements by ConsumerLab.

News Release

7/10/2009

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

2/14/2007

ConsumerLab.com reports on anti-depressant herb — St. John's Wort — Few supplements pass quality testing

WHITE PLAINS, NEW YORK — FEBRUARY 14, 2007 — St. John's wort may be helpful in treating mild to moderate cases of clinical depression, but a new report from ConsumerLab.com shows that few of the herbal products tested met quality standards. Americans purchased $64 million of St.

News Release

11/13/2006

Tests of "muscle" supplements finds some "weak" products but most contain expected creatine, HMB, or amino acids — Review of muscular enhancement supplements published by ConsumerLab.com

WESTCHESTER, NEW YORK — MONDAY, NOVEMBER 13, 2006 — Bodybuilders and athletes often turn to supplements to enhance muscle size and strength.