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

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

Beware of Differences in Dose and Price

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

Join over 100,000 members and access 1,400+ product reviews

Find the best products with instant access to our latest tests & reviews of over 1,400 health products.

Save money by finding high-quality products at lower cost.

Stay safe with the latest clinical findings, warnings, and expert answers.

Access our weekly newsletter.

Join Now

Product Updates

View All Updates

"Fishy" Creatine

A CL member reported a "fishy" odor when opening a creatine product. We looked into this. See our Creatine Review, which includes our Top Picks for creatine.

Recall: Thyroid Medication

Certain lots of generic levothyroxine have been recalled nationwide because they may be subpotent. Get the details.

FDA Panel Endorses Access to Peptides

FDA advisors recently backed expanded access to peptides BPC-157 and TB-500. Find out what these recommendations mean, including if it supports the safety and effectiveness of these peptides.

Is the Avocado or Olive Oil in Your Mayo Genuine?

A recent study indicated that the "avocado oil" in most mayonnaise, dressings, marinades, and chips is not genuine avocado oil, while products with "olive oil" fared far better. See the products that passed and failed in our Reviews of Avocado Oil and Olive Oil.

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.

Upcoming Reviews

Get Notifications

Vision Supplements (Lutein & AREDS Formulas)
Extra Virgin Olive Oils
Low-Carb & "Keto" Breads
Low-Dose Lithium Supplements
NAD Boosters (NMN, NAD+/NADH, and Nicotinamide Riboside Supplements)

Expert Answers to Popular Questions

View All Answers

Supplements to Take (or Avoid!) With GLP-1 Drugs

Ratings of ConsumerLab

Clinical Updates

View All Updates

Recalls & Warnings

View All Warnings

Clinical Updates

View All

Recalls & Warnings

View All

Become a CL member today to join over 100,000 members and access 1,400+ product reviews

Join Now

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

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

Beware of Differences in Dose and Price

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

Join over 100,000 members and access 1,400+ product reviews

Popular Product Reviews

Ashwagandha Supplements

B Vitamin Supplements

Collagen Supplements

Extra Virgin Olive Oil

Fish Oil /Omega-3 Fatty Acid Supplements

Multivitamin and Multimineral Supplements

Oats (Rolled and Steel-Cut) Review

Psyllium Fiber Supplements

Red Yeast Rice Supplements

Vitamin D Supplements

Water Filter Pitchers

Product Updates

"Fishy" Creatine

Recall: Thyroid Medication

FDA Panel Endorses Access to Peptides

Is the Avocado or Olive Oil in Your Mayo Genuine?

Magnesium Refund

Upcoming Reviews

Expert Answers to Popular Questions

Supplements to Take (or Avoid!) With GLP-1 Drugs

Magnesium L-Threonate (Magtein): Health Effects & Safety

Best Toothpaste for Cavity Prevention, Sensitivity, or Bleeding Gums?

Resistant Starch: Health Benefits & Safety

Which foods and supplements contain lead, cadmium, or arsenic?

Does AKG Extend Lifespan and Slow Aging?

Supplements and Foods to Lower Cholesterol?

Ratings of ConsumerLab

Clinical Updates

Astaxanthin for Cognition?

Do Air Purifiers Prevent Infections?

Betaine for Boosting Testosterone?

AG1 NEXT GEN – Does It Work?

Niacin for Glaucoma Prevention?