Find the best supplements and foods — based on independent tests of quality.

Find the Best Vision Supplement Based Our Tests

See Our Omega-3 Top Picks and Avoid Rancid Fish Oil

Our Tests Reveal Which Astaxanthin Supplements Offer Most Value

We Found the Best Quality Chia -- Avoid Mold and Metals

See Which Creatine Provides High Quality at Lowest Cost

Little to No Mushroom Found in Some Reishi Supplements

Best Hemp Seeds? We Found 33% of Products Were Spoiled.

Find Out Which Protein Products Passed or Failed Our Tests

Choose the Best NAC Supplement and Save Money

Find the Best Apple Cider Vinegar and Avoid Fakes

32% Failed Our Tests. Choose Your Multivitamin Carefully.

High-Flavanol Cocoas Tested & Compared

Many Dark Chocolates and Cocoa Powders Fail Safety Tests

Some DHEA Pills Release Too Slow and Cost Too Much

Only 2 of 7 Red Yeast Rice Supplements Approved in CL Tests

What’s In Your Licorice? Find Out and Avoid Problems.

Find the Best Beetroot With the Most Nitrate

Only 5 of 8 Nattokinase Supplements Pass Tests

Learn Which Cinnamon to Choose or Avoid

See Our Top Picks Among Turmeric Products

3,700% Difference in Milk Thistle Supplements

See What’s Really in Probiotics and Our Top Picks

Our Tests Showed What’s Hiding in Protein Bars

Only 3 of 8 Amla Powders and Pills Pass CL's Tests

Discover Arsenic Levels in Rice and Our Top Picks

Find Fish Low in Mercury & Arsenic, High in Omega-3s

Pet Joint Supplements: See Our Top Picks

Find the Best Manuka Honey Based on our Tests

Avoid Overpaying for Glycine Supplements

4 out 10 Bone Broths Fail Our Tests

"Loose" Teas Added to Green Tea Review. See How They Compare.

See our Top Picks for L-Glutamine Based on Quality and Value

Inaccurate Labeling Discovered on Most Nutritional Yeasts

18% of Joint Health Supplements Failed to Pass Our Tests

Choose the Best Flaxseed and Other Oils Based On Our Tests

Black Seed Oil: Only 5 of 7 Approved

Find the Best Zinc Supplements, Including Lozenges for Colds

Find the Best Rolled and Steel-Cut Oats -- Beware of Unexpected Gluten

31% of Gluten-Free Grains Fail Our Tests Due to Contaminants

B Vitamins: See Our Top Picks and Which 5 Failed Testing

We Discovered Major Differences Among Shilajit Supplements

D-Mannose for UTIs? See Our Review.

High Levels of Toxin Found in Most Sunflower Seeds and Butters

Trouble Sleeping? See Our Review of Melatonin Supplements.

How to Avoid Fake Vitamins & Supplements Online

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Product Updates

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Bloating With Creatine

Women should be aware that creatine can cause significant water retention during certain times. See the details in our Creatine Supplements Review, which includes our Top Pick for creatine.

Beware of Vitamin C Gummies

Tests of vitamin C gummies sold on Amazon found that nearly half contained almost no vitamin C and many others contained more than twice the listed amount. See the details by brand in our Vitamin C Supplements Review, which includes our tests of vitamin C supplements and our Top Picks for vitamin C.

What's Going On With This Dark Chocolate?

One of the popular dark chocolates in our recent review has undergone a major change -- despite no change to its name – and we question the accuracy of its nutrition label. Get the details in our Dark Chocolate & Cocoa Review, which includes our Top Picks.

Protein & Kidney Disease: Cut Back or Not?

Do people with, or at risk of, kidney disease need to cut back on protein? Get the latest evidence in the Protein Supplements Review + see our Top Picks for protein.

Magnesium Refund

A major supplement brand is paying over $1.8 million to settle claims that its magnesium supplement contained far less magnesium than listed. See the full story in our Magnesium Supplements Review + see our Top Picks for magnesium.