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

Only 5 of 8 Nattokinase Supplements Pass Tests

Learn Which Cinnamon to Choose or Avoid

See Our Top Picks Among Turmeric Products

2,800% 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

Bob's Red Mill vs.Trader Joe’s Farro

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

Lead in Cinnamon

Find Out If Your Chocolate or Cocoa Healthful or Toxic

NEW: Amazon Basics Filter Tested vs. Brita and Others

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