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Product Reviews (41)

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Review of resveratrol supplements tested by ConsumerLab.com, including ratings and comparisons of product quality, price, and ingredients.

Resveratrol Supplements Review (From Red Wine, Knotweed, and Other Sources)
Ashwagandha supplements reviewed by ConsumerLab.com

Ashwagandha Supplements Review
Ginkgo Biloba Supplements Tested by ConsumerLab.com

Ginkgo (Ginkgo Biloba) Supplements Review
Vitamin K Supplements Reviewed By ConsumerLab.com

Vitamin K Supplements Review (Including Calcium, Vitamin D, Magnesium & Boron)
Garlic Supplements Reviewed by ConsumerLab.com

Garlic Supplements Review
Iron Supplements Reviewed by ConsumerLab.com

Iron Supplements Review (Iron Pills, Liquids and Gummies)
Very Low Lithium Supplements Reviewed by ConsumerLab.com

Low-Dose Lithium Supplements Review
N-acetyl cysteine (NAC) supplements tested by ConsumerLab.com

NAC (N-Acetyl Cysteine) Supplements Review
Bilberry Supplements Reviewed by ConsumerLab.com

Bilberry Supplements Review
Melatonin Supplements Reviewed by ConsumerLab.com

Melatonin Supplements Review
Weight Loss Supplements Tested by ConsumerLab.com

Weight Loss Supplements Review (7-Keto DHEA, Forskolin and Stimulant Blend Supplements)
Flaxseed Oil, Evening Primrose Oil, Borage Oil, Hemp Oil and Black Currant Oil Supplements Reviewed by ConsumerLab.com

Black Currant Oil, Borage Oil, Evening Primrose Oil, Flaxseed Oil, and Hemp Oil Supplements Review: Sources of ALA and GLA (Omega-3 and -6 Fatty Acids)

Prostate Supplements Review (Saw Palmetto and Beta-Sitosterol)

Vitamin E Supplements, Cream, and Oil Tested by ConsumerLab.com

Vitamin E Supplements Review
DHEA Supplements Tested by ConsumerLab.com

DHEA Supplements Review
Astaxanthin Supplements Reviewed By Consumerlab.com

Astaxanthin Supplements Review
Selenium Supplements Reviewed by ConsumerLab.com

Selenium Supplements Review
Turmeric and Curcumin Supplements and Spices Reviewed by ConsumerLab.com

Turmeric and Curcumin Supplements and Spices Review
Vitamin D Supplements Reviewed By ConsumerLab.com

Vitamin D Supplements Review (Including Calcium, Vitamin K, Magnesium, and Boron)
Fish Oil and Other Marine Oil Supplements Reviewed by ConsumerLab.com

Fish Oil, Krill Oil, and Algal Oil Omega-3 (DHA & EPA) Supplements Review
Green Coffee Bean Extract Supplements Reviewed by ConsumerLab.com

Green Coffee Bean Extract Supplements Review (for Weight Loss)
Collagen Supplements Reviewed By ConsumerLab

Collagen Supplements Review
Green Tea Supplements, Drinks, and Brewable Teas Review

Green Tea Review: Supplements, Brewable, Matcha, and Bottled
Vitamin C Supplements Tested by ConsumerLab.com

Vitamin C Supplements Review
L-Theanine Supplements reviewed by ConsumerLab.com

L-Theanine Supplements Review
Lutein, Zeaxanthin and Vision Supplements Tested by ConsumerLab.com

Vision Supplements Review (with Lutein and Zeaxanthin)
Zinc Supplements and Lozenges Reviewed by ConsumerLab.com

Zinc Supplements and Lozenges Review
CoQ10 and Ubiquinol Supplements Reviewed by ConsumerLab.com

CoQ10 and Ubiquinol Supplements Review
African Mango Seed Extract

African Mango (Seed Extract) Supplements for Weight Loss Review Article
Sam-e supplements reviewed by ConsumerLab.com

SAMe (S-adenosyl-methionine) Supplements Review

Lysine Supplements Review
Alpha-Lipoic Acid Supplements Reviewed by ConsumerLab.com

Alpha Lipoic Acid Supplements Review
Sterol, Stanol, and Policosanol Supplements for Cholesterol-lowering Reviewed by ConsumerLab.com

Cholesterol-Lowering Supplements Review (Sterols/Stanols and Policosanol)

Digestive Enzyme Supplements Reviewed by ConsumerLab.com

Digestive Enzyme Supplements Review
Holy Basil Supplements Reviewed by ConsumerLab.com

Holy Basil Supplements Review
Boron supplements reviewed by ConsumerLab.com

Boron Supplements Review (Including Calcium, Magnesium, and Vitamins D & K)
Elderberry Supplements Reviewed by ConsumerLab.com

Elderberry Supplements Review
Chia supplements reviewed by ConsumerLab.com

Chia Seed Review
Echinacea supplements reviewed by ConsumerLab.com

Echinacea Supplements Review
Psyllium Supplements Reviewed by Consumerlab.com

Psyllium Fiber Supplements Review
Magnesium Supplements Reviewed By ConsumerLab.com

Magnesium Supplements Review (Including Calcium, Vitamins D & K, and Boron)
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CL Answers (26)

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Is it safe to take curcumin or turmeric supplements for a long period of time?

Information on the long-term effects of curcumin or turmeric supplements. Find out if curcumin and turmeric is safe to take for long periods. ConsumerLab explores these questions.

Is It Safe to Take Turmeric or Curcumin Supplements Long-Term? -- Bottle of Turmeric Capsules

Do collagen or hyaluronic acid supplements really help aging or wrinkled skin?

Find out if collagen & hyaluronic acid supplements really help for aging or wrinkled skin and for skin care.

Collagen Supplements for Wrinkles? -- woman looking closely at her face in a mirror

Can taking too much vitamin B-6 be dangerous? The label on my multivitamin states it contains 2000% of the Daily Value!

Find out if multivitamins contain excessive amounts of B-6, how much B-6 is too much, and symptoms of toxicity and overdose.

Do any supplements help for flu?

Which supplements may help prevent or reduce symptoms of colds or the flu, including vitamin D, ginseng, NAC, and elderberry.

Supplements for Flu -- women with the flu sitting on couch with tissues, thermometer, warm drink

What is the best way to take melatonin to get a good night's sleep?

Learn more about the best way to take melatonin for better sleep. When to take it, how to take it, and general melatonin information.

Melatonin Supplements Reviewed by ConsumerLab.com

Do any supplements help prevent or treat a cold?

Are there supplements that can help prevent or treat cold symptoms? Learn more about zinc, probiotics, vitamin C and more.

Supplements for Colds: Zinc, Echinacea & More -- Couple with cold, sitting on couch blowing their noses

How do I find the best quality olive oil and what are the health benefits?

Health Benefits of olive oil, including heart benefits, anti-inflammatory effects. Plus, how to choose a quality olive oil and cook with olive oil

Health Benefits of Olive Oil -- Pouring Olive Oil Into a Bowl

Do I need to divide my daily 300 mg dose of CoQ10 into smaller doses, or can I take it all at once?

Find out when to take CoQ10 supplements. Should you take CoQ10 at once, or in smaller doses? Understand the best way. ConsumerLab.com explains.

The Best Way to Take CoQ10 -- CoQ10 Supplement

Can vitamin K2 really help decrease calcium in the arteries?

Learn more about vitamin K2 and the impact on calcium in the heart and arteries, and find out if vitamin K can help with coronary heart disease.

Is it best to take probiotic supplements with or without food? It seems like everyone has a different recommendation.

When is the best time to take probiotic supplements? Learn if you should take your probiotic with or without food.

Probiotics

Is Modified Citrus Pectin (MCP) helpful for prostate or breast cancer?

Modified Citrus Pectin (MCP) information including its effects on cancer, such as prostate cancer, and more.

Modified Citrus Pectin for Cancer? -- close up of an orange and orange peel

The maker of my multivitamin says it doesn't include folic acid because too much from supplements can be harmful. Is that true?

Learn more about the harmful effects from too much folic acid, including increased risk of prostate cancer and kidney damage.

Harm from Too Much Folic Acid ? -- Multivitamin bottle and label

Is echium oil a good alternative to fish oil? I am allergic to fish.

Echium oil as an alternative to fish oil. Learn more for those with fish allergies, including information on omega-3 fatty acids.

Do reishi mushroom supplements boost the immune system, or have other health benefits?

Learn more about the health benefits of reishi mushroom extract supplements, including evidence from clinical studies on cancer and diabetes, plus information about safety and price.

Reishi Mushroom Supplements for the Immune System -- reishi mushroom, mushroom powder and pills in spoons on a table

Which is the best form of magnesium to take - one that contains the most magnesium and is best absorbed?

Info on which is the best form of magnesium supplements to take and what to look for when choosing the best magnesium supplement. ConsumerLab.com explains.

Magnesium Supplements Reviewed By ConsumerLab.com

I've tried a number of fish oil supplements, all of which make me nauseous. What is the best non-fish alternative? I am primarily interested in getting EPA.

Learn how to reduce fish oil side effects such as nausea and upset stomach.

What is UC-II and does it help joints?

What is UC-II (undenatured type 2 collagen - InterHealth Nutraceuticals) and do clinical studies show that it works for joint health?

UC-II Collagen for Joint Pain? -- man with knee pain

Do any supplements help prevent or reduce eye floaters?

Can eye floaters (vitreous floaters) be treated with supplements like vitamin C, lutein, ginkgo, milk thistle, collagen or hyaluronic acid? ConsumerLab.com's answer explains.

How to Reduce Eye Floaters With Vitamins & Supplements -- Close-up of an eye

What are phytoceramides? Do phytoceramide supplements really work to improve aging skin?

Phytoceramide supplement information, including what they are, what they claim to do, and if they have anti-aging effects.

Phytoceramides for Aging Skin? -- woman looking at skin up close in mirror

Are lithium orotate supplements as effective and safe as prescription lithium for bipolar disease and depression?

Lithium orotate supplement info, including proper dosage, safety, and how lithium orotate supplements compare to prescription lithium for bipolar disease and depression.

What are CoQ10 side effects?

CoQ10 side effects, such as nausea, headache, and insomnia, and how you can reduce the occurrence of CoQ10 side effects. ConsumerLab.com's answer explains.

CoQ10 and Ubiquinol Supplements Reviewed by ConsumerLab.com

Can vitamin supplements strengthen brittle nails?

Learn more about strengthening brittle nails with vitamin B-7 (biotin), based on clinical evidence.

Supplements for Brittle Nails -- healthy nails

I take omeprazole (Prilosec), a proton pump inhibitor, to reduce stomach acid. Are there supplements I should avoid, or be taking, due to this drug?

Supplement interactions with proton pump inhibitor (PPI) drugs like omeprazole (Prilosec) and Nexium.

Do any supplements help prevent sunburn or skin damage from sun exposure?

Find out which supplements may help protect from sunburn and sun-related skin damage, including beta-carotene, vitamins A and C, and cocoa.

Do any supplements or foods help with migraine? Do any trigger migraine?

Find out if supplements such as magnesium, CoQ10, riboflavin, butterbur, feverfew and others help with migraine. Also learn about foods that may trigger migraine, including chocolate and watermelon.

Migraine

Is it possible to take too much vitamin C?

Find out the daily value of vitamin C, along with possible side effects of excessive vitamin C intake. ConsumerLab explores the topic of proper vitamin C supplement usage, and why taking too much can be harmful.

Bottles of vitamin C pills
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News Releases (89)

Search term may appear only in full report available to members. Sign in or Join now for full access.

2/25/2021

Top-rated Vitamin and Supplement Brands and Merchants for 2021 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users
11/24/2020

Best Zinc for Colds, Immunity, and More. ConsumerLab Selects Top Picks Among Zinc Liquids, Pills and Lozenges
8/15/2020

ConsumerLab Tests Show Not All Vitamin E Supplements Contain What They Claim
6/26/2020

No Garlic in Some Garlic Supplements? -- Best and Worst Garlic Supplements Revealed in Tests by ConsumerLab
6/06/2020

Best Vitamin C Supplements Revealed by ConsumerLab
3/25/2020

Trouble Sleeping? ConsumerLab Tests Reveal the Best Melatonin Supplements
2/25/2020

Top-rated Vitamin and Supplement Brands and Merchants for 2020 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users
10/22/2019

Best Vision Supplements Identified by ConsumerLab
9/27/2019

Best Turmeric and Curcumin Supplements and Spices Identified by ConsumerLab
7/31/2019

ConsumerLab Tests Reveal Best CoQ10 and Ubiquinol Supplements
7/10/2019

Best Selenium Supplements Identified by ConsumerLab
3/11/2019

Best NAC (N-acetyl cysteine) Supplements Identified by ConsumerLab
2/25/2019

Top-rated Vitamin and Supplement Brands and Merchants for 2019 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users
11/19/2018

Tests Reveal Best Fish Oil Supplements and How They Compare to Prescription Fish Oil
5/10/2018

Big Differences Found Among Green Teas -- ConsumerLab Tests Identify Best Green Tea in Bags, Matcha, Supplements, and Bottles --
3/07/2018

Finding Real Ginkgo Isn't Easy, ConsumerLab's Tests Reveal
2/25/2018

Top-rated Vitamin and Supplement Brands and Merchants for 2018 Based on Consumer Satisfaction
1/04/2018

ConsumerLab.com Reveals Its Top Picks for Best Iron Supplements
11/27/2017

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
9/26/2017

ConsumerLab.com Explains How to Take Melatonin and Reveals Its Top Supplement Picks
8/23/2017

ConsumerLab.com Tests Reveal Best Low-Dose Lithium Supplements for "Mood"
6/21/2017

Which Magnesium Is Best? ConsumerLab.com Tests Popular Brands and Reveals Its Top Pick
5/17/2017

Best Vitamin D? ConsumerLab.com Tests Popular Vitamin D Supplements and Reveals Its Top Picks
4/04/2017

ConsumerLab.com Reveals Best and Worst Turmeric and Curcumin Supplements & Spices -- 31% Fail ConsumerLab.com Tests of Quality
3/15/2017

ConsumerLab.com Reveals Best and Worst Vitamin C Supplements -- 20% Fail ConsumerLab.com Tests of Quality
2/25/2017

Top-rated Vitamin and Supplement Brands and Merchants for 2017 Based on Consumer Satisfaction
2/23/2017

ConsumerLab.com Reveals Best and Worst B Vitamin Supplements and Why Current Labels Often Mislead
11/03/2016

Is Astaxanthin Helpful for Inflammation or Other Conditions -- and Which Brands Are Best? -- ConsumerLab.com Reviews the Evidence and Tests the Quality of Popular Astaxanthin Supplements
10/11/2016

What Are the Benefits of Resveratrol and Which Brands Are Best? -- ConsumerLab.com Reviews the Evidence and Tests the Quality of Popular Resveratrol Supplements
9/13/2016

Best Fish Oil? ConsumerLab.com Tests 44 Popular Omega-3 Supplements and Identifies Its Top Picks
2/25/2016

Top-rated Vitamin and Supplement Brands and Merchants for 2016 Based on Consumer Satisfaction
1/12/2016

Problems Found with 32% of Multivitamin/Multimineral Supplements -- ConsumerLab.com Identifies Good Choices for Men, Women, and Children
9/19/2015

ConsumerLab.com Tests Popular Prostate Supplements with Saw Palmetto and Beta-Sitosterol
8/13/2015

Feeling Stressed? ConsumerLab.com Reviews the Evidence for L-Theanine and Test Popular Products
7/22/2015

ConsumerLab.com Tests DHEA Supplements, Warns of Differences in Dose and Price
5/28/2015

ConsumerLab.com Shows How to Choose the Right Melatonin Supplement for Sleep
5/05/2015

ConsumerLab.com's Tests of Digestive Enzyme Supplements Reveal What Labels Don't
4/28/2015

Best Supplements for Bone Health? ConsumerLab.com Finds Products with Multiple Ingredients More Likely to Contain Wrong Amounts
3/17/2015

CoQ10 & Ubiquinol Supplements Vary in Quality, as Well as Dose, Absorption, and Price According to ConsumerLab.com
2/25/2015

Top-rated Vitamin and Supplement Brands and Merchants for 2015 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users
7/22/2014

Which Supplements Help Lower Cholesterol? ConsumerLab.com Identifies Best Products by Reviewing Evidence and Testing Quality
5/07/2014

Flaxseed and Other Popular Seed Oil Supplements Tested by ConsumerLab.com, But Not All Brands Pass -- Flaxseed, Black Currant, Borage and Evening Primrose Oils Reviewed
2/26/2014

Mislabeling of Some Joint Health Supplements with Glucosamine, Chondroitin, Boswellia, and MSM According to ConsumerLab.com -- 38 Supplements Tested, Including Products for Dogs and Cats --
2/12/2014

Top-rated Vitamin and Supplement Brands and Merchants for 2014 Based on Consumer Satisfaction -- Results of the ConsumerLab.com Survey of Vitamin & Supplement Users
1/29/2014

You May Be Getting More Vitamin C Than You Think from Some Supplements, Cautions ConsumerLab.com -- 27% of Vitamin C Supplements Don't Meet Label Claims in Recent Tests --
1/15/2014

Problems Found with the Quality and Labeling of Some "Muscle Enhancement" Supplements -- Review of Creatine and Branched-chain Amino Acid Supplements Published by ConsumerLab.com
12/16/2013

What's Really in Turmeric Supplements and Spices? You May Not Want to Know -- 33% of Turmeric/Curcumin Supplements Fail ConsumerLab.com's Review; Filth Found in Spices
9/19/2013

What's Really in Resveratrol Supplements? Some Contain Little Resveratrol or Do Not Meet Quality Standards According to ConsumerLab.com
7/31/2013

Watch Out for Fake Bilberry Supplements, Cautions ConsumerLab.com
3/05/2013

CoQ10 & Ubiquinol Supplements Should Be Chosen Carefully, Cautions ConsumerLab.com -- Less Than 4% of Listed Ingredient Found in Widely-Sold Product
2/01/2013

Top-rated Vitamin and Supplement Brands and Merchants for 2013 Based on Consumer Satisfaction
12/21/2012

ConsumerLab.com Tests Reveal What's Really In Green Tea Supplements and Bottled Drinks
11/06/2012

50% of Green Coffee Bean Supplements Don't Contain Expected Amounts of Ingredient for Weight Loss, According to ConsumerLab.com
9/27/2012

ConsumerLab.com Reveals How Much Caffeine is in Energy Drinks -- Also Finds Some Drinks and Dietary Supplements Don't Contain Claimed Amounts of B Vitamins
8/31/2012

ConsumerLab.com tests selenium supplements -- Finds one with less than 25% of listed amount
8/22/2012

Contamination and Other Problems Found in Fish Oil Supplements -- Large Review by ConsumerLab.com Reveals Excessive PCBs or Mislabeling in Over 30% of Omega-3 Supplements
6/18/2012

What is "Natural" Vitamin E? It Depends On the Brand Selling It, Finds ConsumerLab.com -- New Review of Vitamin E Supplements, Oil and Cream, Including Tocopherols and Tocotrienols
5/30/2012

ConsumerLab.com Identifies Best and Worst Magnesium Supplements Based on Tests and Comparisons
3/12/2012

Review of vitamin C supplements by ConsumerLab.com finds many of high quality but a wide range in prices
2/01/2012

Top-rated vitamin and supplement brands and merchants on consumer satisfaction for 2012 -- Based on ConsumerLab.com Survey of Vitamin & Supplement Users
12/20/2011

Choose zinc supplements carefully -- ConsumerLab.com finds only some have dosage proven to shorten colds, reduce eye disease
11/29/2011

ConsumerLab.com identifies many quality melatonin sleep supplements, but prices range from 4 cents to over $1 for the same dose
10/13/2011

30% of SAM-e supplements selected for review fail to pass ConsumerLab.com testing -- Cost of SAM-e found to vary 5-fold
6/16/2011

ConsumerLab.com puts multivitamins to the test
4/26/2011

Problems discovered with eight vitamin D supplements in study by ConsumerLab.com -- Incorrect amounts of vitamins, lead contamination, and labeling infractions identified.
3/30/2011

ConsumerLab.com finds 100-fold variation in cost of iron supplements
3/08/2011

ConsumerLab.com reviews CoQ10 and ubiquinol supplements -- Tests show quality to be high, but large differences found in dosage, formulation, and cost
2/16/2011

Some turmeric and curcumin supplements fail quality review -- ConsumerLab.com finds 20% of turmeric supplements selected for review deliver less than 15% of promised compounds
2/01/2011

Top-rated vitamin and supplement brands and merchants on consumer satisfaction for 2011 -- Based on ConsumerLab.com survey of vitamin and supplement users 
1/31/2011

Vitamin D use increased 52% in past two years according to ConsumerLab.com survey of supplement users -- Fish oil continued to surpass multivitamins as most popular supplement and Internet was most common place to buy supplements
1/11/2011

Spoilage and labeling errors found with some omega-3 and -6 supplements; Review of evening primrose, flaxseed, borage, and black currant oil supplements
12/02/2010

ConsumerLab.com Finds Lower-priced Resveratrol Supplements Pass Tests While Some Higher-priced brands flunk
9/28/2010

ConsumerLab.com 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 
6/30/2010

Echinacea supplements vary widely in ingredients but found clear of contaminants according to ConsumerLab.com -- New review guides consumers through wide range of dosage, species, preparations, and formulas in echinacea products
12/16/2009

"Eye health" supplements vary widely in formula but product quality is high according to ConsumerLab.com
7/10/2009

Nine joint health supplements fail ConsumerLab.com 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
5/19/2009

Review of Magnesium Supplements by ConsumerLab.com Shows One-Quarter Fail Quality Tests
3/31/2009

ConsumerLab.com 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
1/13/2009

ConsumerLab.com reports largest test of CoQ10 and ubiquinol supplements -- Most supplements provide claimed ingredient, but large variation in dosage and forms may confuse consumers.  ConsumerLab.com provides guidance.
1/23/2008

ConsumerLab.com announces brands and merchants rated highest by dietary supplement consumers
11/13/2007

ConsumerLab.com finds some "red wine" supplements deliver less resveratrol than expected; Wide range in dose and price
9/10/2007

Tests of B-vitamins by ConsumerLab.com finds several short on folic acid — New report covers B-complexes, thiamin, niacin, B-6, B-12, biotin and folic acid supplements
4/24/2007

ConsumerLab.com 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
2/15/2007

ConsumerLab.com survey shows brands and merchants rated highest by dietary supplement users
8/01/2006

ConsumerLab.com evaluates cholesterol-lowering supplements — Test results available for over 90 products; Review of nine popular ingredients
4/26/2006

ConsumerLab.com tests cancer-prevention supplements; several contaminated with lead or low in ingredient
— Report available for green tea, selenium, and lycopene supplements
11/15/2005

Testing by ConsumerLab.com identifies many problems with popular supplements for weight loss, slimming, and blood sugar control
7/18/2005

ConsumerLab.com tests menopause supplements — Alternatives to hormonal therapy — Report available for 38 products including soy and red clover isoflavones, black cohosh, and progesterone creams
6/15/2005

Two magnesium supplements fail testing due to lead contamination. Nineteen others pass. Report now available.
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