Menu MENU - Testing Supplements for 21 Years

Press Releases

May 22, 2020 — Best Alternative Milks? ConsumerLab Tests Reveal What's Really in Plant-Based Milks

April 28, 2020 — Best and Worst Multivitamins Revealed by ConsumerLab -- Problems Found With 44% of Multis Tested

April 14, 2020 — ConsumerLab Tests Reveal Best Probiotic Supplements and Those With Quality Issues

April 3, 2020 — Tests of Holy Basil Supplements Show 63% Fail on Quality -- ConsumerLab Tests Reveal the Best and Worst Holy Basil Supplements

March 25, 2020 — Trouble Sleeping? ConsumerLab Tests Reveal the Best Melatonin Supplements

March 20, 2020 — ConsumerLab Reveals Problems at 52% of Supplement Manufacturing Sites in U.S. and 42% Abroad

March 12, 2020 — ConsumerLab Tests Reveal Big Differences Among Elderberry Supplements

March 4, 2020 — CBD Most Often Used for Pain, Then Sleep, According to CL Survey. Half of Users Think It Works.

March 3, 2020 — Best and Worst Chia Seed Products Revealed by ConsumerLab

February 29, 2020 — Collagen and Magnesium Rise in Popularity, as Fish Oil and Curcumin Dip in Latest ConsumerLab Survey of Supplement Users

February 25, 2020 — Top-rated Vitamin and Supplement Brands and Merchants for 2020 Based on Consumer Satisfaction -- Results of the Survey of Vitamin & Supplement Users

January 23, 2020 — We Found the Best Dark Chocolates and Cocoas With the Least Contamination

November 12, 2019 — Best Magnesium Supplements Revealed by ConsumerLab

October 22, 2019 — Best Vision Supplements Identified by ConsumerLab

October 4, 2019 — ConsumerLab Tests Reveal Best Collagen Supplements for Wrinkles and Joints

September 27, 2019 — Best Turmeric and Curcumin Supplements and Spices Identified by ConsumerLab

September 11, 2019 — Some Nutrition Bars Contain More Carbs and Less Fiber Than Listed, ConsumerLab Tests Reveal

August 22, 2019 — Best Reishi Mushroom Supplements Identified by ConsumerLab

July 31, 2019 — ConsumerLab Tests Reveal Best CoQ10 and Ubiquinol Supplements

July 10, 2019 — Best Selenium Supplements Identified by ConsumerLab

June 25, 2019 — ConsumerLab Tests Reveal Best B Vitamin Supplements -- 19% of B Vitamin Supplements Fail CL's Tests of Quality

May 15, 2019 — ConsumerLab Tests Reveal Big Differences in Digestive Enzyme Supplements

April 26, 2019 — Best Cholesterol-Lowering Supplements (Sterols, Stanols & Policosanol) Identified by ConsumerLab

April 25, 2019 — Best Coconut Water? ConsumerLab Tests Popular Products, Reveals Top Pick

April 1, 2019 — Not All Quercetin Supplements Contain What They Claim, ConsumerLab Tests Reveal

March 11, 2019 — Best NAC (N-acetyl cysteine) Supplements Identified by ConsumerLab

March 7, 2019 — Best Coconut and MCT Oils Identified by ConsumerLab

February 25, 2019 — Top-rated Vitamin and Supplement Brands and Merchants for 2019 Based on Consumer Satisfaction -- Results of the Survey of Vitamin & Supplement Users

February 24, 2019 — CBD and Collagen Rise in Popularity, as Probiotics and Coconut Oil Dip in Latest ConsumerLab Survey of Supplement Users

January 31, 2019 — Contamination Still an Issue in Some Greens and Whole Food Products, ConsumerLab Tests Reveal

January 15, 2019 — Not All Lycopene Supplements Contain What They Claim, ConsumerLab Tests Reveal

January 3, 2019 — ConsumerLab Tests Reveal the Best Protein Powders, Shakes and Drinks -- 20% of Protein Powders and Drinks Fail CL's Tests of Quality

December 12, 2018 — Best Taurine Supplements for People and Pets Identified by ConsumerLab

November 19, 2018 — Tests Reveal Best Fish Oil Supplements and How They Compare to Prescription Fish Oil

October 26, 2018 — Best Vitamin A Supplements, Including Cod Liver Oils, Identified by ConsumerLab

October 2, 2018 — Best Joint Health Supplements Identified -- ConsumerLab Tests Glucosamine, Chondroitin, MSM and Boswellia Supplements for People and Pets

September 12, 2018 — Little Omega-3 and High Mercury Found In Some Canned Tuna -- Better Choices Selected for Tuna and Salmon

August 24, 2018 — Few Red Yeast Rice Supplements Provide Enough Cholesterol-Lowering Compounds to Likely Be Effective, ConsumerLab Tests Reveal

July 31, 2018 — Best L-Tryptophan and 5-HTP Supplements Identified by ConsumerLab -- ConsumerLab Tests Strength and Purity of Supplements for Sleep and Mood

July 10, 2018 — Best Chromium Supplements Identified by ConsumerLab

May 31, 2018 — ConsumerLab Identifies the Best Valerian Supplements -- Strength, Quality and Cost Vary Widely Among Popular Brands

May 10, 2018 — Big Differences Found Among Green Teas -- ConsumerLab Tests Identify Best Green Tea in Bags, Matcha, Supplements, and Bottles --

May 2, 2018 — Best Probiotic Supplements and Kombuchas? -- ConsumerLab Tests 41 Popular Products, Reveals Problems and Top Picks

March 27, 2018 — You Can't Always Rely on Bone Broth Labels -- ConsumerLab Tests Reveal How Much Protein, Collagen and Sodium Is Really In Bone Broths

March 7, 2018 — Finding Real Ginkgo Isn't Easy, ConsumerLab's Tests Reveal

February 25, 2018 — Top-rated Vitamin and Supplement Brands and Merchants for 2018 Based on Consumer Satisfaction

February 24, 2018 — Magnesium, Curcumin, and Apple Cider Vinegar Rise in Popularity, While Probiotics Dip and Calcium Continues to Decline in Latest Survey of Supplement Users

February 15, 2018 — Tests Reveal How Much CBD is Really in CBD and Hemp Oils -- Some Don't Provide Amounts of CBD Listed on Labels

January 21, 2018 — Best Apple Cider Vinegar? Beware of Poison! -- Tests Reveal the Best and Worst Apple Cider Vinegars and Pills and Why Some Could Be Dangerous

January 4, 2018 — Reveals Its Top Picks for Best Iron Supplements

December 12, 2017 — Berberine and Goldenseal: Avoid Fakes! -- Testing Reveals the Best and Worst Supplements

November 27, 2017 — Flaxseed and Other Popular Omega 3 & 6 Oil Supplements Tested, But Not All Brands Pass -- Tests of Black Currant Oil, Borage Oil, Evening Primrose Oil, Flaxseed Oil, and Hemp Oil Supplements

November 1, 2017 — Gummies Are Most Likely to Fail Testing in Review of Multivitamins -- Best and Worst Multivitamins Identified by ConsumerLab Testing

October 19, 2017 — Reveals Best Zinc Lozenges and Supplements for Shortening Colds and Correcting Deficiency

September 26, 2017 — Explains How to Take Melatonin and Reveals Its Top Supplement Picks

September 11, 2017 — Tests L-Arginine "Blood Flow" Supplements, Identifying Its Top Picks

August 23, 2017 — Tests Reveal Best Low-Dose Lithium Supplements for "Mood"

July 19, 2017 — New Tests Reveal Whether Dark Chocolates and Cocoas Are Toxic or Healthful

June 21, 2017 — Which Magnesium Is Best? Tests Popular Brands and Reveals Its Top Pick

June 1, 2017 — Best Vitamin K Supplement? Tests Popular Products and Reveals Its Top Picks

May 26, 2017 — Tests Reveal the Best Calcium Supplements

May 17, 2017 — Best Vitamin D? Tests Popular Vitamin D Supplements and Reveals Its Top Picks

April 25, 2017 — Caution with Kelp Supplements: May Contain Too Much Iodine

April 4, 2017 — Reveals Best and Worst Turmeric and Curcumin Supplements & Spices -- 31% Fail Tests of Quality

March 15, 2017 — Reveals Best and Worst Vitamin C Supplements -- 20% Fail Tests of Quality

February 25, 2017 — Top-rated Vitamin and Supplement Brands and Merchants for 2017 Based on Consumer Satisfaction

February 24, 2017 — Vitamin D Supplements Maintain Top Spot in Popularity, as Probiotics Surpass Multivitamins to #4 Behind Fish Oil and CoQ10 in Latest Survey

February 23, 2017 — Reveals Best and Worst B Vitamin Supplements and Why Current Labels Often Mislead

February 3, 2017 — Shows How Much Choline is Really in Supplements -- Tests Phosphatidylcholine (From Soy Lecithin), Citicoline, Alpha-GPC and Other Choline-Containing Supplements, Identifying Top Picks

January 10, 2017 — Your Extra Virgin Olive Oil May Not Be, According to Review By -- Top Picks Noted for Best Quality and Value

December 21, 2016 — Best CoQ10? Tests Popular CoQ10 and Ubiquinol Supplements and Reveals Its Top Picks

December 6, 2016 — Which Brands of Alpha Lipoic Acid are Best? -- Tests Lipoic Acid Supplements for Quality, Identifying Top Picks

November 15, 2016 — Finds Arsenic in Testing of Potassium Supplements -- Safer Choices Identified. Many Americans May Need More Potassium

November 3, 2016 — Is Astaxanthin Helpful for Inflammation or Other Conditions -- and Which Brands Are Best? -- Reviews the Evidence and Tests the Quality of Popular Astaxanthin Supplements

October 11, 2016 — What Are the Benefits of Resveratrol and Which Brands Are Best? -- Reviews the Evidence and Tests the Quality of Popular Resveratrol Supplements

September 26, 2016 — 60% of St. John's Wort Supplements Fail Tests of Quality

September 13, 2016 — Best Fish Oil? Tests 44 Popular Omega-3 Supplements and Identifies Its Top Picks

August 30, 2016 — Surprising Results in Oat Cereals Study by -- Popular Brands Tested for Fungal Toxin, Gluten and Heavy Metals

August 8, 2016 — ConsumerLab Finds Lead, Cadmium and Arsenic Contamination in Greens and Whole Foods Supplements

July 29, 2016 — Discovers Problems with Most Multivitamins for Dogs and Cats

July 27, 2016 — Helps Consumers Make Sense of the FDA's Updated Daily Values (DV) for Vitamins and Minerals

July 26, 2016 — 36% of Meal Replacement Powders and Shakes Fail's Tests of Quality

July 5, 2016 — 80% of Milk Thistle Supplements Fail Tests of Quality -- Most Found to Be Low in Key Component

June 15, 2016 — 28% of Protein Powders and Drinks Fail's Tests of Quality

June 3, 2016 — What Works for Joint Health? Reviews Glucosamine, Chondroitin, MSM and Boswellia Supplements for People and Pets

March 22, 2016 — Rhodiola: Does It Help With Depression and Anxiety and Which Brands Are Best? -- Reviews the Evidence and Tests the Quality of Popular R. Rosea Supplements --

March 1, 2016 — Does Echinacea Really Help With Colds and Which Brands Are Best?

February 25, 2016 — Top-rated Vitamin and Supplement Brands and Merchants for 2016 Based on Consumer Satisfaction

February 24, 2016 — Vitamin D Supplements Jump to Top Spot in Popularity, Surpassing Fish Oil, as Probiotics Rise to #5 Spot Behind CoQ10 and Multivitamins in Survey

February 9, 2016 — Lysine: Does It Work for Cold Sores and Which Brands Are Best? -- Reviews the Evidence and Tests Supplements Often Used to Prevent Herpes Eruptions

January 19, 2016 — SAM-e Supplements Providing Best Quality and Value Identified by

January 12, 2016 — Problems Found with 32% of Multivitamin/Multimineral Supplements -- Identifies Good Choices for Men, Women, and Children

January 5, 2016 — Cinnamon Spices and Supplements Found to Vary Widely in Levels of Potentially Helpful and Harmful Compounds Reports

December 17, 2015 — Focuses on Vision Supplements, Spotting the Best and the Worst

November 6, 2015 — Some Surprising Results from Tests of 43 Probiotic Supplements and Kefir Drinks

October 14, 2015 — Is Matcha a Better Form of Green Tea? Answers the Question

September 19, 2015 — Tests Popular Prostate Supplements with Saw Palmetto and Beta-Sitosterol

August 28, 2015 — Not All Vitamin E Supplements Are Alike, Especially "Natural" Ones, Tests Reveal

August 13, 2015 — Feeling Stressed? Reviews the Evidence for L-Theanine and Test Popular Products

July 31, 2015 — Tests Reveal What's Really in Menopause Supplements and Creams -- Soy Isoflavone, Red Clover, Black Cohosh, and Progesterone Products Reviewed

July 22, 2015 — Tests DHEA Supplements, Warns of Differences in Dose and Price

July 1, 2015 — Tests of Maca "Enhancement" Supplements Find Real Maca, But Some Lead Contamination and Seemingly Excessive Amounts of Rice Filler

June 10, 2015 — Tests Reveal Best and Worst Magnesium Supplements

May 28, 2015 — Shows How to Choose the Right Melatonin Supplement for Sleep

May 5, 2015 —'s Tests of Digestive Enzyme Supplements Reveal What Labels Don't

April 28, 2015 — Best Supplements for Bone Health? Finds Products with Multiple Ingredients More Likely to Contain Wrong Amounts

March 17, 2015 — CoQ10 & Ubiquinol Supplements Vary in Quality, as Well as Dose, Absorption, and Price According to

March 5, 2015 — Shows Chinese Consumers What's Really in Foods and Supplements -- U.S. Testing Company Expands to China, Launches

February 28, 2015 — Use of Magnesium and Probiotics Rise, Multivitamins and Weight Loss Supplements Fall, According to Survey

February 25, 2015 — Top-rated Vitamin and Supplement Brands and Merchants for 2015 Based on Consumer Satisfaction -- Results of the Survey of Vitamin & Supplement Users

February 19, 2015 — Only 50% of Aloe Products Pass Tests

January 20, 2015 — Identifies Best Vitamin A Supplements, But Cautions That Most People Don't Need Them

January 6, 2015 — Only 25% of Ashwagandha Supplements Pass Review

December 10, 2014 — Identifies Best Zinc Products for Colds, Eyes, and Zinc Deficiency -- Popular Zinc Supplements and Lozenges Tested and Compared

December 9, 2014 — Round-up of Recent Product Tests by -- Results for B Vitamin Supplements & Energy Drinks, Garlic, NAC (N-acetyl cysteine), Iron and Omega-7 Fatty Acids

November 25, 2014 — You Can't Judge a Dark Chocolate Bar by Its Label, According to Tests by -- Amounts of Cocoa Flavanols Vary Widely Among Popular Brands of Chocolate

August 20, 2014 — Some Red Yeast Rice Supplements Up to 500X Stronger Than Others -- Popular Cholesterol-Lowering Supplements Tested and Compared

August 5, 2014 — Finds Popular Cocoa Powders Contaminated; High Concentrations of Cadmium Raise Concern

July 22, 2014 — Which Supplements Help Lower Cholesterol? Identifies Best Products by Reviewing Evidence and Testing Quality

July 7, 2014 — Which Weight Loss Supplements Are Best? Reviews the Evidence and Tests the Quality of Popular Products

May 21, 2014 — Your Cocoa May Be Contaminated! Reveals What’s Really in Cocoa and Chocolate Products

May 7, 2014 — Flaxseed and Other Popular Seed Oil Supplements Tested by, But Not All Brands Pass -- Flaxseed, Black Currant, Borage and Evening Primrose Oils Reviewed

April 9, 2014 — Best Fish Oil? Testing Finds Many High Quality Supplements, But Pitfalls Exist

February 26, 2014 — Mislabeling of Some Joint Health Supplements with Glucosamine, Chondroitin, Boswellia, and MSM According to -- 38 Supplements Tested, Including Products for Dogs and Cats --

February 13, 2014 — Calcium, Vitamin C, and Fish Oil Supplements Drop in Use, Probiotics Rise According to Survey

February 12, 2014 — Top-rated Vitamin and Supplement Brands and Merchants for 2014 Based on Consumer Satisfaction -- Results of the Survey of Vitamin & Supplement Users

January 29, 2014 — You May Be Getting More Vitamin C Than You Think from Some Supplements, Cautions -- 27% of Vitamin C Supplements Don't Meet Label Claims in Recent Tests --

January 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

December 16, 2013 — What's Really in Turmeric Supplements and Spices? You May Not Want to Know -- 33% of Turmeric/Curcumin Supplements Fail's Review; Filth Found in Spices

December 6, 2013 — Retesting Confirms Lack of Ingredient in Garcinia Cambogia Supplement

November 25, 2013 — Many Probiotic Supplements Fall Short on Listed Amounts of Helpful Organisms

November 19, 2013 — Some Popular Weight Loss Supplements Contain as Little as 16% of Listed Ingredient, According to

October 23, 2013 — Valerian “Sleep” Supplements Vary Widely in Key Compounds and Two Fail Tests for Lead Contamination

October 8, 2013 — Reports Problems and “Top Picks” Among Bars for Energy, Fiber, Protein, Meal-Replacement, and Whole Food

September 19, 2013 — What's Really in Resveratrol Supplements? Some Contain Little Resveratrol or Do Not Meet Quality Standards According to

August 21, 2013 — Labels on Potassium Supplements May Confuse, But Product Quality is High According to

July 31, 2013 — Watch Out for Fake Bilberry Supplements, Cautions

July 8, 2013 — Contamination a Common Problem in "Greens" and "Whole Foods" Products According to

June 11, 2013 — 31% of Protein Powders and Drinks Fail Tests by

May 21, 2013 — Green Teas Vary in Strength and Amount of Lead Contamination, According to

March 5, 2013 — CoQ10 & Ubiquinol Supplements Should Be Chosen Carefully, Cautions -- Less Than 4% of Listed Ingredient Found in Widely-Sold Product

February 11, 2013 — Reports Problems with Some Vitamin D and Calcium Supplements -- Wrong Amounts of Vitamin D, Pills Which Don’t Break Apart, and Lead Contamination Found

February 1, 2013 — Top-rated Vitamin and Supplement Brands and Merchants for 2013 Based on Consumer Satisfaction

January 31, 2013 — Use of CoQ10, Digestive Enzymes, Probiotics and B Vitamins on the Rise According to Survey

January 14, 2013 — Lycopene Supplements Vary in Quality and Price According to

December 21, 2012 — Tests Reveal What's Really In Green Tea Supplements and Bottled Drinks

November 26, 2012 — Tests Show Many Milk Thistle Supplements Low in Key Component -- Seven of Eleven Products Fail Testing of Herb Used in Diabetes and Liver Diseases

November 6, 2012 — 50% of Green Coffee Bean Supplements Don't Contain Expected Amounts of Ingredient for Weight Loss, According to

October 17, 2012 — Tests and Compares Vision Supplements - Guides Consumers Through a Variety of Ingredients and Formulas

October 4, 2012 — Five Years After Reported a Problem, FDA Agrees Generic Version of Wellbutrin XL Is Not Equivalent and Is Pulled Off Market — Important Lessons about Generics

September 27, 2012 — Reveals How Much Caffeine is in Energy Drinks -- Also Finds Some Drinks and Dietary Supplements Don't Contain Claimed Amounts of B Vitamins

August 31, 2012 — tests selenium supplements -- Finds one with less than 25% of listed amount

August 22, 2012 — Contamination and Other Problems Found in Fish Oil Supplements -- Large Review by Reveals Excessive PCBs or Mislabeling in Over 30% of Omega-3 Supplements

June 18, 2012 — What is "Natural" Vitamin E? It Depends On the Brand Selling It, Finds -- New Review of Vitamin E Supplements, Oil and Cream, Including Tocopherols and Tocotrienols

May 30, 2012 — Identifies Best and Worst Magnesium Supplements Based on Tests and Comparisons

May 8, 2012 — Lead Contamination and Mislabeling in Joint Health Supplements with Glucosamine, Chondroitin, and MSM According to

April 26, 2012 — reviews prostate supplements with saw palmetto and/or beta-sitosterol and finds few likely to be effective

March 12, 2012 — Review of vitamin C supplements by finds many of high quality but a wide range in prices

February 9, 2012 — Probiotics grow in popularity but don't always deliver on promises says -- New report provides guidance to consumers

February 5, 2012 — Fish oil and multivitamins most popular supplements in survey -- Internet most popular place to shop

February 1, 2012 — Top-rated vitamin and supplement brands and merchants on consumer satisfaction for 2012 -- Based on Survey of Vitamin & Supplement Users

January 17, 2012 — Do African mango supplements help with weight loss? investigates the evidence

December 20, 2011 — Choose zinc supplements carefully -- finds only some have dosage proven to shorten colds, reduce eye disease

November 29, 2011 — identifies many quality melatonin sleep supplements, but prices range from 4 cents to over $1 for the same dose

November 14, 2011 — examines whether nitric oxide supplements make muscles bigger and increase endurance

October 31, 2011 — Supplements for lactose intolerance vary in strength and cost, and some offer no benefit, according to

October 13, 2011 — 30% of SAM-e supplements selected for review fail to pass testing -- Cost of SAM-e found to vary 5-fold

September 21, 2011 — Not all vitamin A supplements pass tests -- New report reviews beta-carotene and cod liver oil supplements

August 31, 2011 — analyzes supplements for sexual dysfunction -- Only three out of ten products selected for testing pass

August 4, 2011 — Some coconut waters don't deliver on promises according to

July 12, 2011 — tests menopause supplements and creams: Most are "Approved," but some found contaminated or lacking claimed amount of ingredient

June 16, 2011 — puts multivitamins to the test

May 23, 2011 — Red yeast rice supplements weaker now than in 2008; Wide variation among brands and contamination discovered by -- Popular cholesterol-lowering supplements tested and compared

April 26, 2011 — Problems discovered with eight vitamin D supplements in study by -- Incorrect amounts of vitamins, lead contamination, and labeling infractions identified.

March 30, 2011 — finds 100-fold variation in cost of iron supplements

March 8, 2011 — reviews CoQ10 and ubiquinol supplements -- Tests show quality to be high, but large differences found in dosage, formulation, and cost

February 16, 2011 — Some turmeric and curcumin supplements fail quality review -- finds 20% of turmeric supplements selected for review deliver less than 15% of promised compounds

February 1, 2011 — Top-rated vitamin and supplement brands and merchants on consumer satisfaction for 2011 -- Based on survey of vitamin and supplement users 

January 31, 2011 — Vitamin D use increased 52% in past two years according to survey of supplement users -- Fish oil continued to surpass multivitamins as most popular supplement and Internet was most common place to buy supplements

January 25, 2011 — evaluates quality of potassium supplements and identifies those offering best value

January 11, 2011 — Spoilage and labeling errors found with some omega-3 and -6 supplements; Review of evening primrose, flaxseed, borage, and black currant oil supplements

December 14, 2010 — DHEA supplements, touted for anti-aging and strength, reviewed by  Testing finds one brand with only 14.7% of labeled amount 

December 2, 2010 — Finds Lower-priced Resveratrol Supplements Pass Tests While Some Higher-priced brands flunk

November 24, 2010 — faults AHPA trade group for misrepresenting quality of valerian supplements

November 10, 2010 — Only 22% of valerian herbal sleep supplements selected for review pass tests for quality by

October 26, 2010 — reports deficiencies in some B-complex supplements and more caffeine than expected in "shot-sized" B vitamin "energy" drinks

September 28, 2010 — finds quality problems with nearly 30% of fish oil supplements reviewed; "Fishy" claims identified -- Softgels and liquids for adults, children and pets tested, including krill oil and algal oil supplements 

August 16, 2010 — Problems persist with ginseng supplements -- Review by finds 45% of products don't provide full amount of ingredient or are contaminated

July 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

June 30, 2010 — Echinacea supplements vary widely in ingredients but found clear of contaminants according to -- New review guides consumers through wide range of dosage, species, preparations, and formulas in echinacea products

June 9, 2010 — tests "greens" and "whole foods" products; Most offer healthful nutrients, but some found contaminated with heavy metals

May 5, 2010 — Tests of protein powders and drinks show some lead contamination but no melamine -- New report covers whey, soy, and rice protein supplements for body building, endurance/recovery, meal-replacment and dieting

April 14, 2010 — reports most St. John's wort supplements fail quality tests -- An effective antidepressant herb but heavy metal contamination and low potency are concerns

March 25, 2010 — Cholesterol-lowering supplements reviewed by Many pass quality testing, one fails. Sterol and policosanol products analyzed.  Evidence for other cholesterol-lowering ingredients evaluated

March 2, 2010 — finds carcinogenic form of chromium in supplements, including those for weight loss -- Reviews published of supplements containing chromium, green tea, 7-keto DHEA and stimulant formulas

February 1, 2010 — Top-rated supplement brands and merchants for consumer satisfaction for 2010; Based on Survey of Vitamin & Supplement Users

February 1, 2010 — Fish oil becomes most popular dietary supplement in survey; Vitamin D and resveratrol use surge

January 20, 2010 — finds quality of most CLA supplements for slimming to be high; One brand mislabeled -- Report is first published in series on supplements for weight loss and slimming

December 16, 2009 — "Eye health" supplements vary widely in formula but product quality is high according to

December 2, 2009 — Tests show many milk thistle supplements low in key component -- Nine of ten products fail testing of herb used in diabetes and liver diseases

November 16, 2009 — finds many probiotics don't deliver listed ingredients

October 7, 2009 — finds that only two-thirds of alpha-lipoic acid supplements selected for testing pass quality review -- Anti-oxidant supplements helpful to diabetics

September 15, 2009 — finds many prostate supplements have correct ingredients, but four fail review -- New report on 19 saw palmetto and beta-sitosterol supplements

August 25, 2009 — tests quality of acai berry supplements and beverages -- No contamination found but health benefits remain unproven.  Caution urged with laxative formulas and billing schemes.

August 4, 2009 — Most vitamin E supplements pass testing, but what seems natural may be synthetic according to -- New review of vitamin E supplements, oils, and creams released today

July 10, 2009 — Nine joint health supplements fail 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

May 19, 2009 — Review of Magnesium Supplements by Shows One-Quarter Fail Quality Tests

April 28, 2009 — 40% of Green Tea and Selenium Products Fail Review of Cancer-Prevention Supplements; Lycopene Supplements Pass

March 31, 2009 — Warns of Problems with Multivitamins and Vitamin Water -- Defects Found in Over 30% of Supplements Selected for Testing; Several Popular Children's Multis Exceed Tolerable Limits

March 10, 2009 — reports deficiencies in some supplements containing calcium, vitamin D, or vitamin K -- Focus on bone health supplements and new uses for vitamins D and K

February 3, 2009 — Survey shows fish oil nearly as popular as multivitamins among supplement users.  Most also take calcium and CoQ10 -- publishes 2009 Report on Vitamin & Supplement Users, including top-rated brands and merchants. 

January 13, 2009 — reports largest test of CoQ10 and ubiquinol supplements -- Most supplements provide claimed ingredient, but large variation in dosage and forms may confuse consumers. provides guidance.

December 9, 2008 — Tests of zinc supplements by show only some provide dosage proven to shorten colds, reduce eye disease.  Lead contamination found in one product.

December 8, 2008 — asks USP to adopt safer lead limit for drugs and supplements.  Warns that lead contamination may worsen if USP accepts currently proposed allowance.

November 18, 2008 — Adulteration Suspected with Some "Memory" Supplements -- Few Ginkgo and Huperzine Supplements Pass Tests; Quality High for Acetyl-L-Carnitine

October 28, 2008 — Tests reveal quality problems with vitamin A supplements -- New report focuses on vitamin A, including beta-carotene and cod liver oil

October 2, 2008 — finds melatonin supplements range in strength but ingredient quality is high

September 17, 2008 —'s tests of menopause supplements reveal wide range in strength and quality; mislabeling and contamination discovered -- Soy and red clover isoflavones, black cohosh, and progesterone products tested

August 12, 2008 — finds improvements in labeling of nutrition bars but potential pitfalls exist -- New report compares 20 bars, including those for protein, fiber, energy and whole food

August 5, 2008 — 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)

July 1, 2008 — Tests of ten red yeast rice supplements by reveal significant statin levels, but some pills contaminated -- Popular cholesterol-lowering supplements compared in new report

May 5, 2008 — Some iron supplements short on iron or contaminated according to

April 16, 2008 — FDA's investigation of generic antidepresssant called inadequate by and The People's Pharmacy

March 17, 2008 — As problems surface, and the people's pharmacy ask FDA to disclose differences between generic and original drugs

March 7, 2008 — finds most vitamin C supplements pass quality tests but one short on ingredient and some exceed tolerable levels

February 6, 2008 — Consumers warned of lead in some turmeric supplements — Highest lead level ever reported by; Lack of active compound also a problem

January 23, 2008 — announces brands and merchants rated highest by dietary supplement consumers

January 8, 2008 — finds most potassium supplements meet quality standards, but one with only 18% of ingredient — Results for 12 potassium supplements in new review

December 10, 2007 — finds improvement in quality of omega-3 and -6 supplements — Results for 22 products made from evening primrose, flaxseed, borage and black currant oils

November 13, 2007 — finds some "red wine" supplements deliver less resveratrol than expected; Wide range in dose and price

October 30, 2007 — Recently tested magnesium supplements free of lead, but one product missing most of its ingredient according to — First Major Product Review of Potential "Life-Extending" Ingredient

October 12, 2007 — finds generic antidepressant behaves differently from original drug. May explain complaints by patients. — Generic drug equality questioned

September 10, 2007 — Tests of B-vitamins by finds several short on folic acid — New report covers B-complexes, thiamin, niacin, B-6, B-12, biotin and folic acid supplements

August 20, 2007 — ConsumerLab tests products in booming nutrition drink market — most deliver what's promised but extra cholesterol found in some — New report covers drinks and powders for endurance/recovery, body building, meal-replacement and dieting

July 17, 2007 — Concerned by weaknesses in FDA's new rules for dietary supplements, acts to "raise the bar on quality"

July 12, 2007 — finds lutein & zeaxanthin supplements vary widely in strength but most meet ingredient claims — Right amount of antioxidant may help prevent macular degeneration and improve vision

June 12, 2007 — Tests show many milk thistle supplements low in key component — Seven products fail testing of herb used in diabetes and liver diseases

May 15, 2007 — finds some alpha lipoic acid supplements come up short — Improper formulation may cause ingredient degradation

April 24, 2007 — reports improvement in quality of SAM-e supplements used for osteoarthritis and depression — Recent testing shows quality is up since studies in 2000 and 2003

April 11, 2007 — Many arthritis supplements lack key listed ingredient — finds chondroitin missing or low in eight supplements; Glucosamine and MSM also tested

March 6, 2007 — produces series of free online seminars about dietary supplements — First seminar on "joint health" now available

February 15, 2007 — survey shows brands and merchants rated highest by dietary supplement users

February 14, 2007 — reports on anti-depressant herb — St. John's Wort — Few supplements pass quality testing

January 19, 2007 — Consumers warned of problems with multivitamins — uncovers defects in over half of products tested

December 12, 2006 — Probiotic supplements grow in popularity but viable bacteria missing in many — cautions consumers to select probiotics carefully and store them properly

November 17, 2006 — responds to vitamin industry claim to be "vindicated" in defamation case

November 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

October 20, 2006 — report on CoQ10 supplements finds quality high but large range in suggested dosage

October 10, 2006 — Care advised with natural cold remedies: finds few products with proper quality and directions — offers advice from tests of echinacea, garlic, ginseng, vitamin C, and zinc supplements

September 19, 2006 — DHEA supplements, touted for anti-aging and strength, reviewed by — Testing finds one brand with 215% of the labeled amount

August 15, 2006 — Over 70% of herbal sleep supplements fail tests for quality by — Results for 16 valerian products released today

August 1, 2006 — evaluates cholesterol-lowering supplements — Test results available for over 90 products; Review of nine popular ingredients

June 22, 2006 — What's in a garlic supplement? Consumerlab finds few brands have it right and many mislead

May 24, 2006 — Problems persist with ginseng supplements — finds nearly half of products lack ingredient or contaminated

May 18, 2006 — Court denies vitamin trade group's motion to stop defamation suit brought by

April 26, 2006 — tests cancer-prevention supplements; several contaminated with lead or low in ingredient
— Report available for green tea, selenium, and lycopene supplements

March 29, 2006 — reports on 29 popular melatonin sleep supplements

March 13, 2006 — reports on supplements for bone health containing calcium and vitamin D— Results posted for 32 supplements for adults and children; One found contaminated with lead

February 6, 2006 — finds most prostate supplements have correct ingredients, but three fail testing — Results posted for 22 supplements containing saw palmetto and beta-sitosterol

January 25, 2006 — Sexual enhancement supplements analyzed by

January 3, 2006 — Tests of memory enhancing supplements by reveals lead in some ginkgo

December 5, 2005 — reaffirms problems with Trimspa X32

November 15, 2005 — Testing by identifies many problems with popular supplements for weight loss, slimming, and blood sugar control

August 31, 2005 — testing of alpha lipoic acid supplements from Japan finds no ingredient in one product; Most others meet claims — Japanese consumers urged to research product quality

August 16, 2005 — tests potassium supplements — Report now online for sixteen products

July 18, 2005 — tests menopause supplements — Alternatives to hormonal therapy — Report available for 38 products including soy and red clover isoflavones, black cohosh, and progesterone creams

July 12, 2005 — finds some supplements lower in omega-3 and omega-6 fatty acids than claimed — Report available for 23 products made from oils of black currant, borage, evening primrose and flax

June 20, 2005 — Quality problems widespread among ginseng products sold in Japan. — Nearly two-thirds of products fail testing due to pesticide contamination and missing or substandard ingredients

June 15, 2005 — Two magnesium supplements fail testing due to lead contamination. Nineteen others pass. Report now available.

May 10, 2005 — begins publishing test reports on Japanese vitamins and supplements — Review of CoQ10 products Now Available Online in Japanese at More Reports Scheduled

April 27, 2005 — finds quality of most nutrition powders and drinks high, but identifies five protein powders with excess sodium or cholesterol — Report Now Available Online

March 30, 2005 — finds most B-vitamins of high quality but three lacking in ingredients — Test Results for 41 Products Reported Along with Information on Use

March 15, 2005 — FTC dismisses complaint by vitamin trade group against

March 14, 2005 — reports on vitamin C supplements — Test Results for 29 Products Reported Along with Information on Use

February 8, 2005 — reports on nutrition bars — Highlights major differences, inaccuracies, and urges consumers to "know your bar"

December 20, 2004 — Testing of Alpha-lipoic acid supplements by finds most meet label claims but one with only 15% of ingredient — Antioxidant of potential benefit in diabetes and other conditions

December 14, 2004 — finds Omega-3 fish oil supplements safer than fish but quality varies among brands — Test of 41 Supplements Finds No Mercury or PCB Contamination, But Some Spoiled or Lacking Claimed Oils

December 14, 2004 — expands testing to Japan — Testing Organization Expands to Help Japanese Consumers Determine Quality of Health and Nutrition Products

August 25, 2004 — finds not all vitamin E products meet claims — Results for 33 vitamin E supplements and skin products released today

July 26, 2004 — reports on iron supplements — Wide variety of products pass testing; Consumers advised on proper dose, type of iron to avoid problems

July 7, 2004 — finds several herbal sleep supplements fail tests for quality — Results for 13 valerian products released today

May 28, 2004 — warns of deceptive campaign by manufacturer of children's vitamin

May 21, 2004 — Consumers warned of pitfalls with some multivitamins and vitamin waters — Testing by uncovers problems with many brands

April 27, 2004 — New report on St. John's wort highlights benefits and risks of herbal product for depression

April 22, 2004 — shares insights from 2 years of testing supplements for athletic banned substances — Athletes and manufacturers urged to learn how to avoid problems

April 7, 2004 — finds some zinc supplements low in ingredient and many don't instruct on proper use — Consumers urged to learn more about zinc when using supplements

March 18, 2004 — Many echinacea supplements don't meet quality standards according to — Test results of cold-reducing herbal supplements released

March 2, 2004 — survey finds most consumers highly satisfied with supplements; Ratings vary by brand

January 29, 2004 — finds lutein supplements vary widely in strength but most meet ingredient claims — Right amount of antioxidant compound may reduce risk of blindness

January 13, 2004 — finds discrepancies in strength of CoQ10 supplements — Increasingly popular supplement, but health professionals and consumers cautioned to check brands

January 9, 2004 — USANA products pass screening for substances banned from Olympics

December 8, 2003 — dispels myths about HGH human growth hormone supplements sold widely on Internet

November 18, 2003 — reports improvement in quality of SAM-e supplements used for osteoarthritis and depression — But a high priced product found to contain only 30% of label claim

November 2, 2003 — Key ingredient missing in some arthritis supplements for people and pets according to — Review of glucosamine, chondroitin and MSM supplements published online today

September 24, 2003 — finds new forms of creatine prone to problems — Test results of muscular enhancement supplements published online today

August 28, 2003 — Some problems persist with ginseng supplements but overall quality improves according to — Test results published online today

July 31, 2003 — finds many cholesterol-lowering supplements poorly made — Test results published online today

June 10, 2003 — finds lead in coral calcium product; Product also charged with false advertising by FTC — Calcium supplement product review published online today

May 20, 2003 — Consumers advised to read labels carefully when selecting herbal supplements for prostate — Saw palmetto product review published online today

April 21, 2003 — Low quality ingredient appears widespread among Ginkgo supplements according to; points to challenge for FDA's proposed regulations — Review of memory enhancement supplements released today

January 21, 2003 — Acidophilus" and other probiotic supplements gain in popularity but live bacteria missing in many — releases review online today

December 30, 2002 — Top quality melatonin products identified by — Hormone supplement used to treat sleep disturbances due to jet travel and other causes

December 10, 2002 — Lupus patients cautioned about hormone supplement — releases DHEA testing results online today

October 29, 2002 — Enormous variation found in strength of garlic supplements — most popular herb in U.S. — releases results online today

September 24, 2002 — Problems found with most sexual enhancement supplements evaluated by — Only 9 of 22 products pass independent review

August 20, 2002 — announces screening of supplements for banned substances for the United States Olympic Committee — First products to pass now listed on web site

August 7, 2002 — finds some spoilage and inaccuracy among omega-3 and 6 supplements — List released of evening primrose, flaxseed and other GLA/ALA products that passed testing 

July 16, 2002 — finds lead contamination remains a problem for certain mineral supplements — Lead found in iron, magnesium and, most recently, potassium pills

July 10, 2002 — Pharmavite dietary supplements receive approval — Vitamin E, SAM-e, St. John's Wort, Ginkgo and others merit approved quality products ranking

June 25, 2002 — reviews radioprotective Iodine pills in response to terrorist threats — Quality of products is high, but local access is poor

May 15, 2002 — lists magnesium products that passed testing — Some products fail due to excess magnesium and lead contamination

May 5, 2002 — Study finds supplement users avoid prescription drugs due to side effects, not cost — Brands top rated by users also identified in new survey by

April 16, 2002 — finds "Breast Enhancement" pills lack evidence of efficacy

April 3, 2002 — More than one in five weight loss, slimming and/or diabetes supplements fail evaluation — Problems found in chromium and pyruvate products; CLA products fine

March 6, 2002 — Study finds supplement users avoid prescription drugs due to side effects, not cost — Brands top rated by users also identified in new survey by

March 5, 2002 — finds nutrition powders & drinks more accurately labeled than nutrition bars, but unapproved food ingredient seen in some

February 8, 2002 — Athletic Banned Substances Screening and Certification Program announced by — Tester of supplements to screen for substances banned in Olympics

January 8, 2002 — finds most B vitamin supplements contain what they claim, but often exceed safe levels — Consumers cautioned to be aware of side effects with high dose products

November 20, 2001 — finds fish oil supplements free of mercury, but 30% lacking in key ingredient — Test results of omega-3 fatty acid (EPA and DHA) products released today

October 30, 2001 — Sixty percent of nutrition bars fail to meet claims in tests — "Low Carb" bars often loaded with carbohydrates; excess sodium and saturated fat also found

October 3, 2001 — Most iron supplements pass testing — Lead contamination and insufficient iron found in some

August 15, 2001 — Problems and ambiguity among alternative estrogen products reported by — Results of soy and red clover isoflavone product testing released online today

July 9, 2001 — Many herbal sleep products lack key claimed ingredient — Results of's testing of valerian products released on web today

June 4, 2001 — reports test results of arthritis supplement — MSM; Quality found higher than for most supplements, but room for improvement remains

May 7, 2001 — Over forty percent of Echinacea products fail review; Inadequate labeling and missing ingredients found common for popular herbal cold remedy

April 10, 2001 — Quality of popular herbal anti-depressant found to vary; certain types of St. John's Wort supplements more likely to pass testing

March 27, 2001 — expands testing of health products; success of dietary supplement evaluations leads company into broader nutrition field, beginning with popular nutrition bars

March 13, 2001 — review of vitamin E supplements finds some insufficiencies and need for clearer labeling; test results released online today

February 14, 2001 — Problems found with multivitamins and multiminerals by

January 29, 2001 — Some supplements for arthritis may exceed newly released safe intake levels for manganese

November 21, 2000 — tests popular supplement for heart failure; CoQ10 test results released online today

September 6, 2000 — finds new calcium products of higher quality than many traditional supplements; Test results released online today

August 7, 2000 — finds that not all creatine supplements meet label claims; Popular sports supplement test results released online

July 11, 2000 — Pesticide contamination found in many Ginseng supplements tested by

May 17, 2000 — test of vitamin C products identifies quality control issues and misuse of USP claim.

April 24, 2000 — announces first test-based buyer's guide to dietary supplements; Manufacturers encouraged to have products tested for potential inclusion.

March 28, 2000 — Only half of SAM-e supplements found to contain proper ingredients and labeling in testing; Product Review of popular anti-depressant published online today.

March 7, 2000 — finds many arthritis supplements lacking labeled ingredients; Glucosamine and Chondroitin product review published online today.

January 31, 2000 — Quality of prostate supplements get mixed review in study; Saw palmetto product review published online today.

January 24, 2000 — Majority of dietary supplements sold in U.S. being tested by in 2000; newest results due January 31 for Saw Palmetto.

December 8, 1999 — testing quality of Glucosamine, Chondroitin, and Saw Palmetto supplements; web site becoming popular reference for consumers

November 16, 1999 — Only three quarters of Ginkgo Biloba supplements contain proper ingredients. posts first of its dietary supplement product tests.

August 5, 1999 — initiates independent testing of herbal products and supplements. Certification Seal announced.


PLEASE BE AWARE that the email address is now your sign-in email address, replacing any previous username. Your password has not changed.

If you do not receive our newsletter at this new address within one week, please contact or call us during business hours at 914-722-9149. Customer Support


If you do not receive our newsletter within one week, please contact or call us during business hours at 914-722-9149. Customer Support