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CL Answer

Can fisetin, also called Cognisetin and Novusetin, really improve memory or slow aging?

Can fisetin (Cognisetin and Novusetin) improve memory or slow aging? Find out what clinical research shows and learn about safety and pricing of fisetin.

Fisetin Supplements on Wooden Plate with Strawberries

Clinical Update

9/30/2012

Do Spreads Lower Heart Risk?

Buttery spreads like Smart Balance and Benecol claim to lower the risk of heart disease due to their phytosterols/stanols. These plant compounds can certainly help (by lowering cholesterol levels), but recent lawsuits challenge whether Smart Balance and Benecol provide enough sterols/stanols to claim a benefit. It turns out that one may, and one may not. Find out more and get our quality ratings of cholesterol-lowering supplements in the updated Cholesterol-Lowering Supplements Review >>

CL Answer

Why aren't there children's multivitamins specifically for girls vs. boys?

Find out the best children's multivitamins for girls and boys, why there aren't different multivitamins for girls and boys, why teen girls and boys have different nutritional needs, especially when it comes to iron, and the best multivitamins for children, teen boys and girls, adults, adults over 50, prenatal vitamins and vitamins for pets.

Kids multivitamins

CL Answer

Is it possible to take too much vitamin C?

Find out the daily value of vitamin C, along with possible side effects of excessive vitamin C intake. ConsumerLab explores the topic of proper vitamin C supplement usage, and why taking too much can be harmful.

Bottles of vitamin C pills

News Release

March 25, 2026

32% of Multivitamins Fail Testing in ConsumerLab Tests

White Plains, NY, March 25, 2026 — Multivitamin and multimineral supplements are among the most widely used dietary supplements, but new testing by ConsumerLab.com shows that not all products deliver what they promise.

Clinical Update

1/25/2022

Air Purifiers

We’ve added a review of the Smart Health S air purifier (also called the Sqair Air Purifier) to our list of more than 60 devices. See which we recommend, which we don't, and our Top Picks for air purifiers based on room size.

Clinical Update

4/03/2025

Should You Clean Produce with Ozone and Ultrasound Devices?

Find out if ozone water or ultrasound cleaners are a smart way to remove bacteria and pesticides from produce in our article about cleaning fruits and vegetables.

Clinical Update

12/01/2023

Dental Tape vs. Floss

Find out if dental tape or dental floss is better for cleaning teeth, and get our take on drTung’s Smart Floss and if it is a Top Pick.

Also find out if toothbrushes, GUM dental picks, or Listerine flossers contain PFAS.

Clinical Update

12/08/2023

Lower-Cost Filter Sellers?

Is it smart to use lower-cost sellers of water filters? We checked into two popular sellers. See what we found in our article about avoiding counterfeit water filters.

Also see a video we added to our article about how to avoid buying counterfeit supplements.

CL Answer

Do Sugar Bear Hair Vitamins make hair shine, nails stronger, and help both to grow? They taste good but are super expensive.

Info on Sugar Bear Hair vitamins. Do they make hair shine, nails stronger and help hair and nails grow? ConsumerLab.com's answer explains.

Do Sugar Bear Vitamins Work? -- bottle of Sugar Bear vitamins

News Release

April 11, 2024

Best CoQ10 & Ubiquinol Supplements According to ConsumerLab Tests

White Plains, NY, April 11, 2024 —  CoQ10 and its active form, ubiquinol, are among the most popular supplements, taken by 42.2% of supplement users, often taken by people on cholesterol-lowering statin medication and for a variety of other conditions.

News Release

May 25, 2023

Best and Worst Multivitamins According to ConsumerLab – Nearly 30% Fail Testing

White Plains, New York, May 25, 2023 — Recent ConsumerLab tests revealed problems with nearly 30% of the popular multivitamin and multimineral supplements selected for testing. Gummy vitamins were particularly likely to have issues.

News Release

April 28, 2020

Best and Worst Multivitamins Revealed by ConsumerLab -- Problems Found With 44% of Multis Tested

White Plains, New York, April 28, 2020 — Multivitamin/multimineral supplements are among the top five most popular supplements, but with so many different formulas on the market, it can be difficult to choose the right one.

News Release

July 31, 2019

ConsumerLab Tests Reveal Best CoQ10 and Ubiquinol Supplements

White Plains, New York, July 31, 2019 — CoQ10 is among the most popular supplements, commonly taken to offset a decline in natural levels of CoQ10 that can occur with the use of statin medications, decrease statin side effects, and increase energy.

News Release

June 25, 2019

ConsumerLab Tests Reveal Best B Vitamin Supplements -- 19% of B Vitamin Supplements Fail CL's Tests of Quality

White Plains, New York, June 25, 2019 — B vitamins and complexes are among the most popular supplements sold in the U.S. because B vitamins are essential for a wide range of functions in the body.

News Release

May 15, 2019

ConsumerLab Tests Reveal Big Differences in Digestive Enzyme Supplements

White Plains, New York, May 15, 2019 — Digestive enzyme supplements can help improve digestion and the absorption of nutrients, and may reduce symptoms of indigestion. But to work, they must provide a certain amount of enzyme activity.

News Release

January 21, 2018

Best Apple Cider Vinegar? Beware of Poison! -- ConsumerLab.com Tests Reveal the Best and Worst Apple Cider Vinegars and Pills and Why Some Could Be Dangerous

White Plains, New York, January 21, 2018 — Apple cider vinegar is promoted as a safe and natural remedy for everything from lowering blood sugar and losing weight to improving digestion and treating infections.

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

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

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

September 13, 2016

Best Fish Oil? ConsumerLab.com Tests 44 Popular Omega-3 Supplements and Identifies Its Top Picks

White Plains, New York, September 13, 2016 — Fish oil and omega-3 fatty acid supplements containing EPA and DHA are among the most popular supplements, and clinical studies suggest a wide range of potential benefits, from improving mental health to treating inflammatory disease.

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

September 19, 2015

ConsumerLab.com Tests Popular Prostate Supplements with Saw Palmetto and Beta-Sitosterol

White Plains, New York, September 19, 2015 — Can prostate supplements with ingredients such as saw palmetto or beta-sitosterol improve symptoms of an enlarged prostate, a condition affecting more than half of men over age 60? And, if so, which supplements are properly made and labeled and ...

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

May 07, 2014

Flaxseed and Other Popular Seed Oil Supplements Tested by ConsumerLab.com, But Not All Brands Pass -- Flaxseed, Black Currant, Borage and Evening Primrose Oils Reviewed

White Plains, New York, May 7, 2014 — Plant seed oils are popular supplements that provide omega-3 and omega-6 fatty acids, but which products offer the best value and quality? Recent analyses by ConsumerLab.

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.

Recalls & Warnings

July 26, 2023

FDA Warns Wise Women’s Choice for Promoting Plant-Based Product for Contraception

On July 20, 2023, the FDA issued a warning letter to Wise Women’s Choice following a review of the company’s website and social media, which found statements about the company’s Wise Women’s Choice products to be drug claims because products were intended to affect ...

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

April 26, 2012

ConsumerLab.com reviews prostate supplements with saw palmetto and/or beta-sitosterol and finds few likely to be effective

White Plains, New York April 26, 2012 — Can supplements reduce the symptoms of prostate enlargement in men, as some products claim? ConsumerLab.com researchers recently tackled this question, investigating the evidence behind prostate supplements and testing the quality of these products.

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

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

December 02, 2009

Tests show many milk thistle supplements low in key component -- Nine of ten products fail ConsumerLab.com testing of herb used in diabetes and liver diseases

TESTS SHOW MANY MILK THISTLE SUPPLEMENTS LOW IN KEY COMPONENT

News Release

August 05, 2008

ConsumerLab.com Find Fifty Fish Oil Supplements Pass Quality Testing -- New Report Helps Consumers Choose Among Pills, Liquids, Foods and Beverages with Omega-3 Fatty Acids (EPA and DHA)

WHITE PLAINS, NEW YORK — AUGUST 5, 2008 — ConsumerLab.com announced today that testing of fifty omega-3 fish oil supplements, foods or beverages (including two marketed for pets) found all to have safe levels of mercury, lead and PCBs.

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

December 10, 2007

ConsumerLab.com finds improvement in quality of omega-3 and -6 supplements — Results for 22 products made from evening primrose, flaxseed, borage and black currant oils

WHITE PLAINS, NEW YORK — DECEMBER 10, 2007 — A new report on the quality of omega-3 and -6 fatty acid supplements made from seed oils was released by ConsumerLab.com today. Two products were slightly low in one fatty acid, but this is an improvement over results from ConsumerLab.

News Release

September 19, 2006

DHEA supplements, touted for anti-aging and strength, reviewed by ConsumerLab.com — Testing finds one brand with 215% of the labeled amount

WHITE PLAINS, NEW YORK — SEPTEMBER 19, 2006 — New tests of supplements containing the hormone DHEA found most to contain their claimed amounts of the controversial ingredient, but one provided 215% of its stated amount, the testing company ConsumerLab.com reported today.

Recalls & Warnings

November 21, 2022

Healthy Sense and People’s Choice Multis Recalled

On November 17, 2022, Mason Vitamins Inc.

Recalls & Warnings

December 31, 2020

FDA Warns Seller of Liposomal Vitamin C, Vitamin D & More

On December 21, 2020, the FDA issued a warning letter to Sparrow Health & Performance LLC for selling the products Organic Liposomal Vitamin C, Nanoemulsified D3K2 (also called Liquid Liposomal Vitamin D3 with K2 or Liposomal Vitamin D3) and Immune Support ...

Recalls & Warnings

August 20, 2016

Smart Lipo Weight Loss Supplement Found to Contain Undeclared Drugs

On June 16, 2016, the FDA issued a warning letter to Centro Naturista because the company's weight loss supplement, Smart Lipo, was found to contain undeclared sibutramine and phenolphthalein.

Recalls & Warnings

June 06, 2015

Weight Supplement Recalled

On June 3, 2015 SmartLipo365 issued a voluntary recall of 122 lots of Smart Lipo because they were found to contain the undeclared drugs sibutramine, desmethylsibutramine, and phenolphthalein.

Recalls & Warnings

April 11, 2013

Glutathione Supplement Maker Warned For Manufacturing Violations and Drug Claims

On April 5, 2013, the FDA issued a warning letter to The Glutathione Corporation following a facility inspection which found the company's supplements, including Ultrathione 500 Glutathione, Ultrathione 1000 Sports Pack, Ultrathione Performance, Ultrathione Extreme Performance, Ultrathione Health ...

Recalls & Warnings

September 26, 2017

FDA Warns Seller of DHEA, Creatine, Chromium & More for Manufacturing Violations, Drug Claims

On August 25, 2017, the FDA issued a warning letter to Mega-Pro Nutrition, Inc., following inspections of the facility and website www.mega-pro.

Recalls & Warnings

November 19, 2016

GNC Women's Multi Recalled Due to Undeclared Allergen

On November 16, 2016, Nutra Manufacturing, Inc. issued a recall of one lot of GNC Women's Ultra Mega Time Release multivitamin because it contains undeclared milk.

Recalls & Warnings

March 28, 2008

FDA Warns of Adverse Reactions with Two Liquid Supplements -- Selenium Toxicity Possible

The U.S. Food and Drug Administration is advising consumers not to purchase or consume Total Body Formula in the flavors of Tropical Orange and Peach Nectar, or Total Body Mega Formula in the Orange/Tangerine flavor.

Recalls & Warnings

May 09, 2020

FTC Warns 45 More Companies for Coronavirus Claims

On May 7, 2020, the FTC announced that it sent warning letters to 45 companies for selling products such as herbal products, immune system boosters, and vitamin C with unsupported claims that they can treat coronavirus (COVID-19).

Recalls & Warnings

January 31, 2014

Weight Loss Supplement Containing DMAA Recalled

On January 30, 2014, YoungYou International ("YoungYou") issued a voluntary recall of Mega Slim Herbal Appetite Management capsules because they were found to contain DMAA.

Recalls & Warnings

June 28, 2013

Three Sexual Enhancement Supplements Found Contain Undeclared Drugs

On June 27, 2013, the FDA warned consumers not to buy or use MVP Mega, Exten 1300 and MaxTreme Zen, dietary supplements for sexual enhancement which were found to contain undeclared tadalafil or a combination of tadalafil and sildenafil.

Recalls & Warnings

June 03, 2008

Selenium Toxicity from a Supplement

The June 2008 issue of Annals of Internal Medicine provides a recent case report describing the symptoms of a woman and her husband after taking a liquid supplement found to contain excessive selenium.

Recalls & Warnings

April 11, 2008

Update: Hazardous Levels of Selenium Confirmed by FDA in Two Supplements

On April 11, 2008, the FDA notified healthcare professionals and patients that it has found hazardous levels of selenium in samples of certain flavors of the dietary supplement products "Total Body Formula" and "Total Body Mega Formula.

Recalls & Warnings

January 10, 2018

Lithium Supplement Contaminated With E. Coli, Health Canada Warns

On December 1, 2018, Health Canada (the Canadian equivalent of the FDA) warned consumers that it found Smart Brain Formulations Serotonin Support, a lithium ororate supplement sold on the website Robert Lamberton Consulting, to be contaminated with E. choli (Escherichia coli).

Recalls & Warnings

April 23, 2019

"Brain Boosting" Supplements Were Promoted With Non-Existent Clinical Studies

On April 10th, 2019, the FTC (Federal Trade Commission) announced the marketers of cognitive enhancement supplements Geniux, Xcel, EVO, and Ion-Z have agreed to settle charges that they made false claims about the product, including fake research references and celebrity ...

Recalls & Warnings

September 17, 2013

Seller of Omega-3 and Joint Supplements Warned for Manufacturing Violations and Drug Claims

On August 29, 2013, the FDA issued a warning letter to Y.S. Health Corp.

Recalls & Warnings

May 20, 2015

Gluten Found in More Than Half of Popular Probiotic Supplements Tested

Tests of 22 popular probiotic supplements revealed that 12 contained detectable amounts of gluten, according to researchers at the Celiac Disease Center at Columbia University Medical Center.

Recalls & Warnings

January 26, 2016

Seller of CoQ10, SAM-e, Vitamin D, and More Warned for Manufacturing Violations, Drug Claims

On January 15, 2016, the FDA issued a warning letter to Nutri-Dyn Midwest, Inc., following a facility inspection which found the company's products, including Cardioauxin BP, Zinc Lozenge, Oliver, Pau D'Arco, Petadolex, Chondro Jointaide, Dynagesic, SAMe-200, Gugulipid.

Recalls & Warnings

March 01, 2013

Manufacturer of Joint, Weight Loss, Muscle Supplements and More Warned for Adulteration, Misbranding and Drug Claims

On February 4, 2013, the FDA issued a warning letter to DC Nutrition, Inc.