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

Some Colostrum Supplements Fail to Deliver

Can You Trust Magnesium Labels? See Our Tests and Top Picks

See Which Creatine Provides High Quality at Lowest Cost

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

3 of 11 Extra Virgin Olive Oils Don't Make the Grade. See Our Top Picks.

Choose the Best Low-Dose Lithium Supplement Based on Our Tests

Tests Reveal Which Products Deliver on "Net Carbs" Claims

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

Find the Best Vision Supplement Based Our Tests

Our Tests Reveal Which Astaxanthin Supplements Offer Most Value

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

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

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