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Product Review

Glutathione Supplements Review

Learn How Glutathione Products Differ, Which Failed, and Our Top Picks

Glutathione Review 2024

Product Review

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

Find the Best Vision Supplement Based 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

Astaxanthin Supplements Review

See Which Astaxanthin Products Passed or Failed CL's Tests

Astaxanthin supplements reviewed by ConsumerLab.com

Product Review

Ginger Supplements, Chews & Spices Review

Tests Reveal Best and Worst Ginger Supplements & Spices. Poor Quality and Lead Contamination Discovered in Some Products.

Ginger Supplements Reviewed By Consumerlab.com

CL Answer

What is hydrogen water? Is it beneficial for alertness, athletic performance, arthritis or other conditions, and is it safe?

Find out if hydrogen water has benefits with regard to alertness, side effects of radiotherapy in cancer patients, metabolic syndrome, athletic performance, rheumatoid arthritis, liver disease, and other conditions, and learn if it is safe to use.

Portable hydrogen water generator

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

CL Answer

What is lumbrokinase, does it have heart benefits, is it safe, and what should you look for, or avoid, in a lumbrokinase supplement?

Lumbrokinase is marketed as promoting healthy circulation and supporting heart health. Find out how and if lumbrokinase supplements actually work, possible safety concerns, and what to consider when choosing a lumbrokinase supplement.

Capsules of lumbrokinase poured onto a black table

Clinical Update

2/02/2024

Avoid Counterfeits: 4 Brands Added

Counterfeit versions of supplements have been sold on sites such as Amazon. Learn on how to safely purchase products online for 62 brands. We recently added information for Metamucil, Emergen-C, Dr. Mercola, and Healthy Origins.

Clinical Update

2/09/2024

Avoiding Counterfeits: More Brands Added

We've added information about 365 by Whole Foods Market, Doctor’s Best, and Dr. Mercola to our article about how to safely buy real vitamins and supplements.

CL Answer

Where to Safely Buy Real Vitamins and Supplements Online, Not Fakes or Counterfeits

ConsumerLab explains how to avoid counterfeit vitamins and supplements when shopping online on Amazon, Walmart.com, and other sites. Learn to identify authorized sites and sellers and avoid fake supplements. Use the brand-by-brand guide to protect yourself from risk.

Woman in Orange Sweater

Product Review

Vitamin C Supplements Review

Find the Best Vitamin C Supplements

Vitamin C Review 2023

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

November 02, 2023

Spirulina and “Greens” Supplement Tests Show Some Problems

White Plains, New York, November 2, 2023 —  ConsumerLab tests of spirulina, chlorella, and “greens” supplements revealed that tablets of three brands of spirulina failed to disintegrate within the allotted time, and several other products contained amounts of lead unsuitable for regular consumption ...

News Release

July 13, 2023

Best Vision Supplements According to ConsumerLab Tests

White Plains, New York, July 13, 2023 —  Studies show that supplements containing lutein, zeaxanthin, zinc, and other ingredients can help slow the progression of age-related macular degeneration, which is the leading cause of blindness in adults over age 60.

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

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.

CL Answer

I've tried a number of fish oil supplements, all of which make me nauseous. What is the best non-fish alternative? I am primarily interested in getting EPA.

Learn how to reduce fish oil side effects such as nausea and upset stomach.

Disgusted Woman Holding Fish Oil

News Release

February 09, 2022

Caution With Spirulina Supplements: ConsumerLab Tests Reveal Lead Contamination, Quality Concerns

White Plains, New York, February 9, 2022 — Problems were discovered in three out of four spirulina supplements recently tested by ConsumerLab. One product was found to be contaminated with lead, and two other products, which were tablets, failed to disintegrate within the expected time.

CL Answer

Can biotin supplements really strengthen nails or improve hair? Can other supplements help?

Learn more about strengthening brittle nails with vitamin B-7 (biotin), based on clinical evidence.

Supplements for Brittle Nails -- healthy nails

CL Answer

Do any supplements or foods help with migraine? Do any trigger migraine?

Find out if supplements such as magnesium, CoQ10, riboflavin, butterbur, feverfew and others help with migraine. Also learn about foods that may trigger migraine, including chocolate and watermelon.

Migraine

News Release

September 11, 2021

Best CoQ10 and Ubiquinol Supplements Identified in Testing by ConsumerLab

White Plains, New York, September 11, 2021 — CoQ10 and ubiquinol, the active form of CoQ10, are often taken to offset a decline in natural levels that occurs with the use of statin (cholesterol-lowering) medication, and are also promoted for increasing energy and anti-aging effects.

News Release

July 23, 2021

Best Astaxanthin Supplements Identified In Testing by ConsumerLab

White Plains, New York, July 23, 2021 —Astaxanthin supplements are promoted for a wide range of uses, such as increasing physical endurance, reducing inflammation and wrinkles, protecting from sunburn, and lowering triglyceride levels.

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

December 22, 2020

Best and Worst Ginger Supplements, Chews & Spices Identified by ConsumerLab. Contamination, Less Ginger Than Expected in Some Products.

White Plains, New York, December 22, 2020 — Ginger is not only a popular spice but may reduce nausea from motion sickness and pregnancy and modestly decrease pain from osteoarthritis. Key compounds in ginger known as gingerols are believed to be active components of ginger.

News Release

June 06, 2020

Best Vitamin C Supplements Revealed by ConsumerLab

White Plains, New York, June 6, 2020 — Due to its role in maintaining immune system health, vitamin C has been promoted to help prevent and treat COVID-19, as well as other viral infections such as colds.

News Release

April 14, 2020

ConsumerLab Tests Reveal Best Probiotic Supplements and Those With Quality Issues

White Plains, New York, April 14, 2020 — Probiotic supplements may be helpful for conditions including antibiotic-associated diarrhea, irritable bowel syndrome, and respiratory infections.

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

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

October 19, 2017

ConsumerLab.com Reveals Best Zinc Lozenges and Supplements for Shortening Colds and Correcting Deficiency

White Plains, New York, October 19, 2017 — In the U.S., mild zinc deficiency is fairly common. Zinc supplements can help to correct a deficiency, slow the progression of age-related macular degeneration, and have other benefits. Taken as a lozenge, zinc can shorten the duration of a cold.

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

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

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

November 03, 2016

Is Astaxanthin Helpful for Inflammation or Other Conditions -- and Which Brands Are Best? -- ConsumerLab.com Reviews the Evidence and Tests the Quality of Popular Astaxanthin Supplements

White Plains, New York, November 3, 2016 — Astaxanthin is the red carotenoid and antioxidant which, through the food chain, provides the pink coloration of shrimp, krill salmon and trout.

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

November 06, 2015

Some Surprising Results from Tests of 43 Probiotic Supplements and Kefir Drinks

White Plains, New York, November 6, 2015 — How many beneficial organisms are in probiotic supplements and kefir drinks? Are any contaminated with pathogens, such as E. coli, and do those labeled as "gluten free" or "99% lactose-free" live up to their claims? To find out, ConsumerLab.

News Release

May 05, 2015

ConsumerLab.com's Tests of Digestive Enzyme Supplements Reveal What Labels Don't

White Plains, New York, May 5, 2015 — How do you know if your digestive enzyme supplement is truly active? The only way to know for sure is to test it on fats, carbohydrates, proteins and other parts of food which it is expected to digest. That's exactly what 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

April 09, 2014

Best Fish Oil? ConsumerLab.com Testing Finds Many High Quality Supplements, But Pitfalls Exist

White Plains, New York, August 10, 2014 — Recent laboratory tests of fish oil, krill oil, algal oil, calamari oil, and green-lipped mussel oil supplements by ConsumerLab.com revealed quality problems with four out of 30 supplements selected for review.

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

November 25, 2013

Many Probiotic Supplements Fall Short on Listed Amounts of Helpful Organisms

White Plains, New York, November 25, 2013 — Probiotic supplements and foods containing "friendly" bacteria or yeast have become popular among people hoping to improve bowel function, immunity, and even mood.

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

August 22, 2012

Contamination and Other Problems Found in Fish Oil Supplements -- Large Review by ConsumerLab.com Reveals Excessive PCBs or Mislabeling in Over 30% of Omega-3 Supplements

August 22, 2012 — The quality of fish oil / omega-3 supplements varies across brands, according to recent tests by ConsumerLab.com, which independently reports on the quality of health products. Analyses of 35 products selected and purchased by 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

March 08, 2011

ConsumerLab.com reviews CoQ10 and ubiquinol supplements -- Tests show quality to be high, but large differences found in dosage, formulation, and cost

WHITE PLAINS, NEW YORK — MARCH 8, 2011 — A new report by ConsumerLab.com highlights the difficulty consumers may have in selecting a supplement containing the anti-oxidant CoQ10 or its activated form, ubiquinol. CoQ10 is among the most popular dietary supplements in the U.S.

CL Answer

What are CoQ10 side effects?

CoQ10 side effects, such as nausea, headache, and insomnia, and how you can reduce the occurrence of CoQ10 side effects. ConsumerLab.com's answer explains.

CoQ10 2024

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.

Recalls & Warnings

January 02, 2012

Manufacturing Violations for Multivitamin, Vitamin K and Other Supplements

On December 19, 2011, the U.S. FDA sent a Warning Letter to Milk Specialties Global regarding manufacturing violations. Affected products include PrimaForce Proliver Capsules, Dr. Mercola Vitamin K2, Active Women’s Multivitamin/Multimineral, Cremagnavol, Immune Support, and HPF Women’s Multi.

Recalls & Warnings

June 20, 2020

FTC Warns 30 More Companies for Coronavirus Claims

On June 18, 2020, the FTC announced that it sent warning letters to 30 companies for selling products such as immune system boosters, colloidal silver, vitamin C, and CBD with unsupported claims that they can treat coronavirus (COVID-19).

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.