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Product Review

DHEA Supplements Review

Choose the Best DHEA Supplement. Beware of Big Differences in Dose and Price.

DHEA Supplements Tested by ConsumerLab.com

Product Review

Quercetin & Rutin Supplements Review

Quality's a Concern With Quercetin and Rutin Supplements -- Only 17% of Claimed Amount In One

Product Review

Astaxanthin Supplements Review

See Which Astaxanthin Products Passed or Failed CL's Tests

Astaxanthin supplements reviewed by ConsumerLab.com

Product Review

Fish Oil, Krill Oil, and Algal Oil Omega-3 (DHA & EPA) Supplements Review

See Our Omega-3 Top Picks and Avoid Rancid Fish Oils.

Fish Oil and Other Marine Oil Supplements Reviewed by ConsumerLab.com

Product Review

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

Find the Best Vitamin D Supplement and Avoid Problems

Vitamin D Review 2024

Product Review

L-Arginine Supplements Review

Choose the Best L-Arginine Supplement. Find Out Which L-Arginine Supplement Passed CL's Tests.

L-Arginine Supplements Reviewed by ConsumerLab.com

Product Review

CoQ10 and Ubiquinol Supplements Review

Find the Best CoQ10 and Ubiquinol Supplements and Learn How They Differ

CoQ10 2024

Product Review

Dark Chocolates, Cocoa & Cacao Powders, Nibs, and Supplements Review -- Sources of Flavanols

Is Your Chocolate or Cocoa Healthful or Toxic? Find the Best Dark Chocolate, Cocoa Powder and Cocoa Supplements Based On Our Tests.

Product Review

B Vitamin Supplements Review (B Complexes, B6, B12, Biotin, Folate, Niacin, Riboflavin & More)

See Our Top Picks and Which 5 Failed Testing

B Vitamins Review 2024

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

Turmeric and Curcumin Supplements and Spices Review

See Our Top Picks Among Turmeric Products

Product Review

Calcium and Bone Health Supplements Review (Including Vitamins D & K, Magnesium and Boron)

See Which Bone Health Supplements Are Top Picks and Which Fail

Calcium Review 2024

Product Review

PQQ (Pyrroloquinoline Quinone) Supplements Review

Learn What PQQ Does and Which PQQ Supplements are Best

Product Review

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

Find Out What Magnesium Does, Who Needs It, and Our Top Picks Among Supplements

Magnesium Review 2024

Product Review

Nitric Oxide Supplements (Bodybuilding and Athletic Performance) Review Article

Do Nitric Oxide Supplements Really Work? Find Out If Nitric Oxide Supplements Really Build Muscle or Improve Performance.

Nitric Oxide Supplements Review

Product Review

Garcinia Cambogia (HCA) Supplements Review

Find the Best Garcinia Cambogia Supplement. Choose Carefully! Most Garcinia (HCA) Weight Loss Supplements Lack Listed Amount of Ingredient .

Garcinia Cambogia (HCA) Supplements Reviewed by ConsumerLab.com

Product Review

NAC (N-Acetyl Cysteine) Supplements Review

Choose the Best N-Acetyl Cysteine Supplement. See Our Tests of Popular NAC Supplements and Top Picks for Quality and Value.

N-acetyl cysteine (NAC) supplements tested 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

Phosphatidylserine (PS) Supplements

Find out if phosphatidylserine helps with memory and which products are best.

Phosphatidylserine Review 2024

Product Review

L-Lysine Supplements Review

Read L-Lysine Labels Carefully. Some Can Fool You.

Product Review

Elderberry Supplements Review

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

Elderberry Supplements Reviewed by ConsumerLab.com

Product Review

Apple Cider Vinegar Review — Bottled Liquids and Supplements

Find the Best Apple Cider Vinegar. See Which Apple Cider Vinegar Liquids and Supplements Passed Our Tests of Quality.

Apple Cider Vinegar Supplements Reviewed by ConsumerLab.com

Product Review

Alpha-Lipoic Acid Supplements Review

Choose the Best Alpha-Lipoic Acid Supplement — See the Amounts of Active "R-Isomer" We Found

Product Review

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

Find Out If It's Worth Taking Vitamin K and Which Products Are Best

Vitamin K Review 2024

Product Review

Menopause Supplements Review (Soy and Red Clover Isoflavones, Black Cohosh) and Progesterone Creams

Choose the Best Menopause Supplement. Find Out Now Which Soy Isoflavone, Red Clover, Black Cohosh, and Progesterone Products Have the Active Compounds You Want!

Menopause Supplements Tested by ConsumerLab.com -- Soy and Red Clover Isoflavones, Black Cohosh, and Progesterone Cream

Product Review

Black Currant Oil, Borage Oil, Evening Primrose Oil, Flaxseed Oil, and Hemp Oil Supplements Review: Sources of ALA and GLA (Omega-3 and -6 Fatty Acids)

Choose the Best Seed Oil Supplements. Find Out Which Flaxseed and Other Seed Oil Supplements Passed Our Tests.

Flaxseed Oil, Evening Primrose Oil, Borage Oil, Hemp Oil and Black Currant Oil Supplements Reviewed by ConsumerLab.com

Product Review

Vision Supplements Review (with Lutein, Zeaxanthin & AREDS2 Formulas)

Find the Best Vision Supplement Based Our Tests

Product Review

Iron Supplements Review (Iron Pills, Liquids and Chews)

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

CL Answer

Hemp Seeds: Health Benefits, Safety, and What To Consider When Picking a Product

Hemp seeds are promoted for heart health, diabetes, boosting testosterone, and other conditions, but do they work? Find out and learn about potential safety concerns.

Whole hemp seeds and hemp hearts in small white bowls

Product Review

Collagen Supplements Review

See our Top Picks for Wrinkles and Joints

Product Review

Joint Health Supplements Review (Glucosamine, Chondroitin, MSM, Boswellia, Collagen and Turmeric)

One-Third of Joint Health Supplements Failed to Pass Our Tests. See Which Passed or Failed, and our Top Picks.

Review of Supplements for Joint Pain

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

CL Answer

Do collagen supplements impact cholesterol levels or reduce risk factors for atherosclerosis?

Collagen has been studied for its effects on cholesterol levels and atherosclerosis risk factors, but its effects are still not clear.

Collagen powder and collagen pills

Product Review

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

Some green teas provide barely any green tea polyphenols, while some others are high strength. See the Test Results and Our Top Picks for Green Tea.

Green Tea Review 2024

Product Review

Fruits, Veggies, and Other Greens Supplements Review (Including Spirulina and Chlorella)

Avoid Lead in Greens, Problems with Pills, and Don't Give Up Eating Whole Foods.

Greens Review Oct 2023

Product Review

L-Theanine Supplements Review

Touted for Stress Relief, Do L-Theanine Supplements Work?

Product Review

Protein Powders, Shakes, and Meal Replacements Review

Find Out Which Protein Products Passed or Failed Our Tests

Product Review

Red Yeast Rice Supplements Review

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

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.

CL Answer

Do either phosphatidylserine or phosphatidylcholine help with memory and cognition? How are these supplements different?

Find out if phosphatidylserine or phosphatidylcholine supplements improve memory and cognition.

Brain Puzzle

CL Answer

Which vitamins and supplements should be stopped before getting blood work, laboratory tests, or medical imaging?

Find out which vitamins and supplements can interfere with blood, urine or stool tests, and imaginging tests, like bone scans and MRIs. Learn how B vitamins such as biotin, niacin and riboflavin, as well as calcium supplements, St. John’s wort, vitamin C, and others supplements can affect test results, as well as common foods that may interfere with tests.

Vitamin & Supplements to Stop Before Blood Tests

CL Answer

What are phytoceramides? Do phytoceramide supplements really work to improve aging skin?

Phytoceramide supplement information, including what they are, what they claim to do, and if they have anti-aging effects.

Phytoceramides for Aging Skin? -- woman looking at skin up close in mirror

CL Answer

How much calcium do you need each day, what forms are best, and how much is too much?

Learn about the recommended daily intake of calcium from food & supplements and why taking too much can be harmful. Also, learn about the forms of calcium that are available and which are best.

None

CL Answer

What are the benefits of calcium-d-glucarate?

Learn more about calcium-d-glucarate, including evidence from clinical studies on cancer and cholesterol and safety.

News Release

March 30, 2023

ConsumerLab Tests Show Not All Quercetin and Rutin Supplements Contain What They Claim

  White Plains, New York, March 30, 2023 — Quercetin is a plant compound found in its natural form, rutin, in foods such as capers, onions, and kale.

CL Answer

Will pregnenolone help slow down aging or reduce chronic pain?

Learn more about the steroid hormone pregnenolone, including its effects in the body and on aging and chronic pain.

Elderly couple yoga pose in sunshine

News Release

February 25, 2023

Top-rated Vitamin and Supplement Brands and Merchants for 2023 Based on Consumer Satisfaction

White Plains, New York, February 25, 2023 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 8,600 responses collected in November/December 2022.

News Release

May 16, 2022

Best Calcium and Bone Health Supplements Revealed by ConsumerLab Tests

  White Plains, New York, May 16, 2022 — Calcium is essential for maintaining bones and plays critical roles in nerve transmission, muscle contraction, and the cardiovascular system.

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.

News Release

February 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

February 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

November 24, 2020

Best Zinc for Colds, Immunity, and More. ConsumerLab Selects Top Picks Among Zinc Liquids, Pills and Lozenges

White Plains, New York, November 24, 2020 — The right zinc can shorten a cold and many people are deficient in zinc. So which zinc supplements and lozenges provide the right dose and form of zinc, the best quality, and at a reasonable price?

News Release

February 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

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.

News Release

May 02, 2018

Best Probiotic Supplements and Kombuchas? -- ConsumerLab Tests 41 Popular Products, Reveals Problems and Top Picks

White Plains, New York, May 2, 2018 — With so many different probiotic supplements on the market, each providing different amounts and strains of beneficial bacteria or yeast, choosing the right one can be an overwhelming task.

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

January 04, 2018

ConsumerLab.com Reveals Its Top Picks for Best Iron Supplements

White Plains, New York, January 4, 2018 — Iron supplements not only treat iron deficiency, but can help reduce unexplained fatigue in women and symptoms of some forms of restless legs syndrome. But choosing an iron supplement and knowing how to use it can be difficult.

News Release

November 01, 2017

Gummies Are Most Likely to Fail Testing in Review of Multivitamins -- Best and Worst Multivitamins Identified by ConsumerLab Testing

White Plains, New York, November 1, 2017 — Multivitamin/multimineral supplements are among the most popular supplements, with many consumers relying on them to provide nutrients they may not get from their diets. However, ConsumerLab.

News Release

June 21, 2017

Which Magnesium Is Best? ConsumerLab.com Tests Popular Brands and Reveals Its Top Pick

White Plains, New York, June 21, 2017 — Magnesium supplements are among the most popular supplements, but do you need to take one and, if so, which is best? To find out, ConsumerLab.com reviewed the clinical evidence, and purchased and tested popular magnesium supplements sold in the U.S.

News Release

May 26, 2017

ConsumerLab.com Tests Reveal the Best Calcium Supplements

White Plains, New York, May 26, 2017 — Most people know that calcium is important for building and maintaining strong bones, but with so many different forms, dosages and ingredient combinations available on the market, choosing a calcium supplement can be difficult. To help, ConsumerLab.

News Release

February 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

February 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.

News Release

December 06, 2016

Which Brands of Alpha Lipoic Acid are Best? -- ConsumerLab.com Tests Lipoic Acid Supplements for Quality, Identifying Top Picks

White Plains, New York, December 6, 2016 — Alpha-lipoic acid supplements may improve insulin sensitivity and blood sugar control in people with type 2 diabetes, reduce symptoms of diabetic peripheral neuropathy, and enhance weight loss when dieting.

News Release

November 15, 2016

ConsumerLab.com Finds Arsenic in Testing of Potassium Supplements -- Safer Choices Identified. Many Americans May Need More Potassium

White Plains, New York, November 15, 2016 — During a recent analysis of potassium supplements sold in the U.S. and Canada, ConsumerLab.com discovered significant contamination with the toxic heavy metal arsenic in pills from one brand.

News Release

October 11, 2016

What Are the Benefits of Resveratrol and Which Brands Are Best? -- ConsumerLab.com Reviews the Evidence and Tests the Quality of Popular Resveratrol Supplements

White Plains, New York, October 11, 2016 — Resveratrol supplements have been popular since 2006, when studies in animals showed "life-extending" and "endurance-enhancing" effects, among other potential benefits.

News Release

July 05, 2016

80% of Milk Thistle Supplements Fail ConsumerLab.com Tests of Quality -- Most Found to Be Low in Key Component

White Plains, New York, July 5, 2016 — Milk thistle supplements naturally contain silymarin compounds which may be helpful in certain liver diseases as well as type 2 diabetes. However, recent 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

January 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.

News Release

August 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.

News Release

July 22, 2015

ConsumerLab.com Tests DHEA Supplements, Warns of Differences in Dose and Price

White Plains, New York, July 22, 2015 — DHEA is a controversial hormone supplement touted for anti-aging effects — but what can it really do? ConsumerLab.com reviewed the evidence and purchased many popular brands of DHEA to test their quality.

News Release

June 10, 2015

ConsumerLab.com Tests Reveal Best and Worst Magnesium Supplements

White Plains, New York, June 10, 2015 — Magnesium supplements have become extremely popular, surpassing even calcium among frequent users of supplements. However, recent tests by ConsumerLab.

News Release

April 28, 2015

Best Supplements for Bone Health? ConsumerLab.com Finds Products with Multiple Ingredients More Likely to Contain Wrong Amounts

White Plains, New York, April 28, 2015 — Vitamin D and calcium each play a crucial role in bone health and are among the most popular supplement ingredients in the U.S., but recent ConsumerLab.

News Release

March 17, 2015

CoQ10 & Ubiquinol Supplements Vary in Quality, as Well as Dose, Absorption, and Price According to ConsumerLab.com

White Plains, New York, March 17, 2015 — Findings from a recent study by ConsumerLab.com highlights the difficulty consumers have in selecting a supplement containing the highly-popular anti-oxidant CoQ10 or its activated form, ubiquinol. ConsumerLab.

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

September 19, 2013

What's Really in Resveratrol Supplements? Some Contain Little Resveratrol or Do Not Meet Quality Standards According to ConsumerLab.com

WHITE PLAINS, NEW YORK — September 19, 2013 — Resveratrol supplements have been popular since 2006, when studies in animals showed "life-extending" and "endurance-enhancing" effects, among other potential benefits. In fact, a recent survey by ConsumerLab.

News Release

March 05, 2013

CoQ10 & Ubiquinol Supplements Should Be Chosen Carefully, Cautions ConsumerLab.com -- Less Than 4% of Listed Ingredient Found in Widely-Sold Product

White Plains, New York — March 5, 2013 — A new report from ConsumerLab.com highlights the difficulty consumers have in selecting a supplement containing the anti-oxidant CoQ10 or its activated form, ubiquinol. ConsumerLab.

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

September 27, 2012

ConsumerLab.com Reveals How Much Caffeine is in Energy Drinks -- Also Finds Some Drinks and Dietary Supplements Don't Contain Claimed Amounts of B Vitamins

White Plains, New York — September 27, 2012 — Energy shots and drinks are promoted to keep you alert and energized, attributing their effects to special formulas often "packed with B vitamins and nutrients to make it last," as a commercial for 5-hour Energy proclaims.

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

December 20, 2011

Choose zinc supplements carefully -- ConsumerLab.com finds only some have dosage proven to shorten colds, reduce eye disease

White Plains, New York — December 20, 2011 — Can zinc supplements shorten colds and reduce the progression of advanced macular degeneration? "Yes, but not all supplements provide a dosage that has been proven effective." says Tod Cooperman, M.D., President of ConsumerLab.com.

News Release

September 21, 2011

Not all vitamin A supplements pass ConsumerLab.com tests -- New report reviews beta-carotene and cod liver oil supplements

White Plains, New York — September 21, 2011 — Recent tests of vitamin A supplements by ConsumerLab.com found one to contain only 54.3% of its listed amount of vitamin A. Another product mislabeled alpha carotene as vitamin A.

News Release

June 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.

News Release

April 26, 2011

Problems discovered with eight vitamin D supplements in study by ConsumerLab.com -- Incorrect amounts of vitamins, lead contamination, and labeling infractions identified.

White Plains, New York — April 26, 2010 — Among 28 vitamin D supplements recently selected for independent testing, problems were found with 8 products, 29% of those reviewed, according to ConsumerLab.com.

CL Answer

Dandelion Tea & Supplements: Health Benefits and Safety

Find out about the potential health benefits of dandelion tea and supplements, as well as safety, side effects, and potential drug interactions.

A cup of dandelion root tea on wooden background

CL Answer

Does ergothioneine help prevent age-related problems such as impaired cognition, Alzheimer’s disease, Parkinson’s disease or cataract, and is it safe?

Learn about ergothioneine and its potential use for cognitive impairment, dementia, Alzheimer's disease, Parkinson's disease, cataract, or kidney disease, as well as its safety and cost of supplements containing this ingredient.

Various types of mushrooms that contain ergothioneine in a wooden bowl on a wooden countertop

CL Answer

What are the health benefits of zinc carnosine, also called polaprezinc, and is it safe?

Find out if zinc carnosine is beneficial for any GI conditions, including stomach ulcers, Helicobacter pylori infection, taste disturbances, aspirin-induced small-bowel injury and oral mucositis, and learn if it is safe.

Zinc carnosine supplements in wooden spoon in front of oysters

CL Answer

What are the health benefits of serrapeptase?

Serrapeptase is a proteolytic enzyme. Learn more about its health effects, including whether evidence supports its use for pain, inflammation, and heart health.

Serrapeptase for Inflammation and Pain

CL Answer

What is lactoferrin and will it really strengthen my immune system?

Info about lactoferrin supplements, clinical evidence for strengthening the immune system, preventing or treating colds, gut health and treating H.

What is Lactoferrin? -- lactoferrin capsules and bottle

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

January 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.

News Release

January 25, 2011

ConsumerLab.com evaluates quality of potassium supplements and identifies those offering best value

WHITE PLAINS, NEW YORK — JANUARY 25, 2011 — A new report on the quality of potassium supplements was released by ConsumerLab.com today. In contrast to its last report on potassium supplements, ConsumerLab.

News Release

December 02, 2010

ConsumerLab.com Finds Lower-priced Resveratrol Supplements Pass Tests While Some Higher-priced brands flunk

WHITE PLAINS, NEW YORK — DECEMBER 2, 2010 — ConsumerLab.com reported today that tests of supplements containing resveratrol — a compound promoted as "life-extending" — revealed that two products provided only 43.4% and 86.

News Release

October 26, 2010

ConsumerLab.com reports deficiencies in some B-complex supplements and more caffeine than expected in "shot-sized" B vitamin "energy" drinks

White Plains, New York — October 26, 2010 — Tests of B vitamin supplements, including B-complexes and shot-sized energy drinks, revealed problems with the quality of 4 out of 18 products selected for review by independent testing organization ConsumerLab.com.

News Release

October 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.

News Release

December 09, 2008

Tests of zinc supplements by ConsumerLab.com show only some provide dosage proven to shorten colds, reduce eye disease. Lead contamination found in one product.

WHITE PLAINS, NEW YORK — DECEMBER 9, 2008 — Zinc supplements can shorten colds and reduce the progression of advanced macular degeneration, among other uses. But a new report by ConsumerLab.

News Release

October 28, 2008

Tests reveal quality problems with vitamin A supplements -- New ConsumerLab.com report focuses on vitamin A, including beta-carotene and cod liver oil

WHITE PLAINS, NEW YORK — OCTOBER 28, 2008 — ConsumerLab.com is cautioning that the amount vitamin A in some supplements may be much higher or lower than the amount stated on labels. Among ten supplements recently selected for testing, ConsumerLab.

News Release

January 08, 2008

ConsumerLab.com finds most potassium supplements meet quality standards, but one with only 18% of ingredient — Results for 12 potassium supplements in new review

WHITE PLAINS, NEW YORK — JANUARY 8, 2008 — A new report on the quality of potassium supplements was released by ConsumerLab.com today. Tests showed one product to contain only 18% of the claimed amount of this essential mineral.

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

April 11, 2007

Many arthritis supplements lack key listed ingredient — ConsumerLab.com finds chondroitin missing or low in eight supplements; Glucosamine and MSM also tested

WHITE PLAINS, NEW YORK — April 11, 2007 — Forty percent of the supplements for osteoarthritis that ConsumerLab.com recently selected for testing were found to lack all or some of their key ingredients. Osteoarthritis is the most common type of arthritis, affecting an estimated 20.

News Release

February 15, 2007

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

CONSUMERLAB.

News Release

April 26, 2006

ConsumerLab.com tests cancer-prevention supplements; several contaminated with lead or low in ingredient — Report available for green tea, selenium, and lycopene supplements

WESTCHESTER COUNTY, NEW YORK — APRIL 26, 2006 ConsumerLab.com announced results today from its new Product Review of Supplements for Cancer Prevention covering 22 products. Cancer is the second leading cause of death in the U.S.

CL Answer

What is TUDCA (tauroursodeoxycholic acid)? Does it have any proven health benefits, and is it safe?

TUDCA information, including its potential health benefits, safety, possible interactions, and cost.

What is Tudca - white capsules poured out of container

CL Answer

Do any supplements naturally suppress appetite and help with weight loss?

Learn which natural ingredients can suppress appetite and find if these natural appetite suppressants help with weight loss.

Container of natural appetite suppressant supplement with measuring tape and scale in background

CL Answer

A tea called Throat Coat made me lethargic and I was found to have low potassium. Is this a known problem? I was drinking 5 cups a day.

Throat Coat tea information, including licorice root content, potassium loss, and symptoms such as lethargy, increased blood pressure and fluid retention. ConsumerLab.com's answer explains.

Throat Coat Tea and Potassium Loss -- box of Throat Coat tea

News Release

March 29, 2006

ConsumerLab.com reports on 29 popular melatonin sleep supplements

WESTCHESTER COUNTY, NEW YORK — MARCH 29, 2006 (UPDATED APRIL 7, 2006) — ConsumerLab.com announced test results today from its new Product Review of Melatonin Supplements covering 29 products.

Recalls & Warnings

June 23, 2020

Nine Hand Sanitizers May Contain Toxic Ingredient That Can Cause Serious Illness or Death

Update: (7/14/20) The FDA has warned consumers not to use forty-six more hand sanitizers that may contain methanol.

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.