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CL Answers (10)

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How can I find out where a vitamin or supplement is made and where its ingredients come from, such as China or the USA?

Learn more about the manufacturing, distribution, and ingredients of a supplement, including FDA regulations.

How to Find Out Where A Supplement Is Made -- Supplement Label

Can I get the new coronavirus (2019-nCoV) from supplements from China?

Information about catching the coronavirus from supplements from China, plus info on contamination with heavy metals like lead and more.

Coronavirus Risk With Supplements from China? -- 'Coronavirus' written on paper surrounded by supplements capsules and tablets

Is the Resurge supplement a scam? I'm having trouble getting a refund.

Resurge supplement scam? ConsumerLab has received several complaints from unhappy consumers who purchased Resurge and said they did not receive the product or a refund.

Are Resurge Supplements a Scam? -- Bottle of Resurge

What is CELLFOOD and is it a healthy supplement?

Learn more about CELLFOOD (NuScience Corporation), including if the claims to improve athletic performance, fibromyalgia, weight loss, and cancer are true.

What is CELLFOOD

What are the health benefits of zinc carnosine, also called polaprezinc, and is it safe?

Find out if zinc carnosine is beneficial for any GI conditions, including stomach ulcers, Helicobacter pylori infection, taste disturbances, aspirin-induced small-bowel injury and oral mucositis, and learn if it is safe.

Zinc carnosine supplements in wooden spoon in front of oysters

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.

Which "whole food" multivitamins don't include synthetic vitamins? How about Complete Foods, Sunwarrior, Garden of Life, Nature's Brands, and Doctors' Research?

Find out which "whole food" multivitamins are only from foods and which include synthetic vitamins, including Complete Foods Nutrition-OctoMega MultiVitamin; Sunwarrior; Garden of Life-MyKind Organics; Nature's Brands-PhytoVitamins; Doctors' Research MultiVitamin.

A blood test showed my vitamin D level is low. How do I know how much vitamin D to take?

Find out how to increase vitamin D blood levels, including a good target range.

Vitamin D

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.

Does collagen taken as a supplement help with arthritis? I'm seeing it in products for joint health.

Learn more about collagen supplements, including evidence from clinical studies on arthritis and muscle strength and safety.

Collagen Supplements for Joint Pain
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Recalls & Warnings (25)

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7/23/2016

Seller of GlucoCor Warned for Drug Claims
10/04/2016

Turmeric Spice Recalled Due to Elevated Lead Levels
9/11/2015

Thirteen Manufacturers Ordered to Stop Selling Devil's Claw Supplements
9/19/2012

FDA Reports Arsenic in Rice Products -- Particularly Brown Rice
1/17/2006

FDA Warns Consumers about Brazilian Diet Pills Found to Contain Active Drug Ingredients
10/10/2003

Government Stops Sale of Supplements Claiming to Treat Obesity and Impotence

3/13/2020

FDA Finds Problems at 52% of Supplement Manufacturing Sites in U.S. and 42% Abroad
3/12/2016

FDA Finds Problems at 58% of Supplement Manufacturing Sites in U.S. and Abroad
8/18/2020

Seller of Immune Shot Criminally Charged With Making Coronavirus Claims
1/21/2021

Federal Court Bars Fusion Health From Promoting Vitamin D for COVID-19
6/17/2004

FTC Challenges Deceptive Weight Loss Claims for Supplement Targeted at Hispanics
1/24/2009

Many Brands of Nutrition Bars Recalled Due to Potential Salmonella Contamination
9/08/2020

Seller of "Diabetes Supplement" & More Warned for Drug Claims
4/17/2020

Joint Pain Supplement Isoprex Settles Charges of Making False Claims
8/21/2014

Seller of Joint Supplement Warned for Manufacturing Violations and Drug Claims
4/23/2019

"Brain Boosting" Supplements Were Promoted With Non-Existent Clinical Studies
6/23/2020

FTC Sends Refund Checks to Consumers of Deceptive "Free Trial" Scheme
9/10/2013

CoQ10 and Carnitine Supplement Company Warned For Manufacturing Violations
8/01/2013

Maker of Algae Products Warned For Drug Claims, Manufacturing Violations
4/19/2013

Recall: Protein Powder May Have Been Contaminated During Packaging
12/07/2012

Antioxidant Protandim Supplement Recalled Due To Risk of Metal Fragments
5/08/2012

False Marketing of Grape Seed Supplement Online
4/27/2016

Multivitamin Recalled Due to Undeclared Allergens
5/03/2011

FDA Warns: Beware of Bogus STD Products
10/02/2009

FDA Raids Online Retailer for Supplements with Steroids
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Clinical Updates (2)

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1/18/2014

Vitamin D Helps Fibromyalgia
Fibromyalgia is an inflammation of the muscle and soft tissue which causes pain and fatigue. A recent study found that giving vitamin D reduced the pain associated with fibromyalgia. For details about the dose and target vitamin D blood level in the study, as well as our tests of vitamin D supplements, see the updated  Vitamin D Supplements Review >>   
6/10/2015

Do Plant Sterols Help?
Many studies have shown that taking plant sterols with meals can lower levels of LDL "bad" cholesterol. While that's a good thing, a recent study questions whether this reduces the risk of cardiovascular disease — the main target of treatment. Get the details in the "Concerns and Cautions" section of the Cholesterol-Lowering Supplements (Sterols and Policosanol) Review >>

News Releases (21)

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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
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
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
2/25/2018

Top-rated Vitamin and Supplement Brands and Merchants for 2018 Based on Consumer Satisfaction
2/25/2017

Top-rated Vitamin and Supplement Brands and Merchants for 2017 Based on Consumer Satisfaction
8/08/2016

ConsumerLab Finds Lead, Cadmium and Arsenic Contamination in Greens and Whole Foods Supplements
2/25/2016

Top-rated Vitamin and Supplement Brands and Merchants for 2016 Based on Consumer Satisfaction
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
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
2/01/2013

Top-rated Vitamin and Supplement Brands and Merchants for 2013 Based on Consumer Satisfaction
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
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
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 
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.
8/05/2008

ConsumerLab.com Find Fifty Fish Oil Supplements Pass Quality Testing -- New Report Helps Consumers Choose Among Pills, Liquids, Foods and Beverages with Omega-3 Fatty Acids (EPA and DHA)
3/07/2008

ConsumerLab.com finds most vitamin C supplements pass quality tests but one short on ingredient and some exceed tolerable levels
11/16/1999

Only three quarters of Ginkgo Biloba supplements contain proper ingredients. ConsumerLab.com posts first of its dietary supplement product tests.
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  2. CL Answers
  3. Recalls & Warnings
  4. Clinical Updates
  5. News Releases