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Four masks shown for comparison

Which is the best mask to prevent COVID-19 and how do cloth, disposable, N95, and KN95 masks compare? How can I stop glasses from fogging?


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CL Answer

Does heat kill coronavirus (COVID-19)? Can it disinfect face masks and packages?

Find out if heat kills the coronavirus SARS-CoV-2 that causes COVID-19 infection. Learn what temperature kills the coronavirus and more. ConsumerLab explains.

Does Heat Kill Coronavirus? -- Women Receiving Food Delivery

CL Answer

What face shield is best to protect from COVID-19 and when should I wear one?

Review of face shields and information about face shields to help protect against coronavirus (COVID-19). If properly made and worn, face shields provide extra protection for close interactions with individual who may be infected.

Face Shield to Protect From Coronovirus (COVID-19) -- Woman Wearing Face Shield, Mask and Gloves

CL Answer

Do UV light sanitizing wands and boxes kill coronavirus (COVID-19)?

UV light is promoted as an effective and convenient alternative to chemical disinfectants, but can it work against the coronavirus? Learn the the pros and cons and see our reviews and comparisons of popular UV devices on the market.

UV Light to Kill Coronavirus (COVID-10)? -- UV Light, Medical Mask and Stethoscope

CL Answer

How are you staying healthy during the coronavirus pandemic?

Tips for staying healthy during the coronavirus (COVID-19) pandemic. Tips from ConsumerLab members for maintaining physical health, mental health and social well-being during COVID-19.

Staying Healthy During the Coronavirus Pandemic -- Couple at Home, Looking Out the Window

Clinical Update


New N95 Top Pick

We evaluated two more N95s masks, and one is a new Top Pick. Get the details in our article about Finding the Best Masks.

Also see our Top Pick among KN95 masks.

CL Answer

I recently bought a CoQ10 supplement on Amazon. The manufacture date was hidden under a sticker, but was 13 months ago. No "Best By" date is listed. Is this product still good to use?

Find out how long your CoQ10 supplement should last, if your CoQ10 is expired, and how long it is good to use.'s answer explains.

Is My CoQ10 Expired? -- CoQ10 capsules in hand

CL Answer

Is it safe to fly and how can I avoid getting COVID when flying?

How to fly safely and avoid COVID-19. Tips to help you stay safe and protect others while flying during the COVID-19 pandemic.

Is it safe to fly and how can I avoid getting COVID-19? -- Man on Airplane With Mask and Hand sanitizer

Clinical Update


CDC Mask Guidelines

Be aware that, this week, the CDC advised that properly fitted N95 and KN95 respirators provide the highest level of protection against COVID. So it’s best to use these masks in place of cloth masks. It was also announced that N95s will soon be made available at no charge at community centers and retail pharmacies across the U.S. Get the details.

Clinical Update


N95 Mask Quality Problem

Federal approval was recently revoked for all N95 masks made by a certain manufacturer. Get the details in our article about the Best Masks to Prevent COVID-19.

Clinical Update


Beware of Counterfeit N95s & KN95s

Sales of counterfeit N95 and KN95 masks remain a concern according to the CDC. Find out the best way to spot a counterfeit and recent examples of counterfeits. Also see our Top Picks for N95 and KN95 masks.

Clinical Update


Masks No Longer Required, But Recommended

A federal judge has ruled that masks are no longer required on flights and other forms of public transportation, although wearing a mask is still recommended by the CDC.

CL Answer

How do the COVID-19 vaccines compare in terms of efficacy, safety and side effects? How, when and where do I get the COVID-19 vaccine?

Find out how the COVID-19 vaccines from Pfizer and Moderna compare and learn how when and where you can get the COVID-19 vaccine.

Older woman getting an injection

Clinical Update


Masks When Traveling

Be aware that experts still recommend wearing a mask when traveling. Get the details.

CL Answer

Is it okay to break vitamin tablets, pills or capsules to change the dose or make them easier to swallow?

Info on the safety of crushing supplement pills, tablets, capsules or enteric coated tablets and ingest the powder with food, as opposed to a whole pill.

Is it okay to crush or cut supplement pills? -- Large, broken vitamin pill

CL Answer

Do melatonin supplements reduce the body's own production of melatonin?

Find out if taking melatonin supplements can decrease the body's own natural production of melatonin (endogenous melatonin), plus other factors that can decrease melatonin levels. ConsumerLabcom's answer explains.

Effects of melatonin supplements on the body's own production of melatonin -- melatonin capsules, glass of water, eye mask

Clinical Update


Check Your Area’s COVID Risk

You can now check if your area in the U.S. is at High, Medium, or Low risk for COVID and the CDC's mask recommendations for your area. Check your community's COVID-19 level.

CL Answer

Which air purifiers are best for reducing the spread of COVID-19?

Find out if portable air cleaners can remove the virus that causes COVID-19 infection from the air and learn which type air cleaners work best.

HEPA air purifier on bedroom floor

CL Answer

I thought the B vitamins were all water soluble and did not build up in the body, so you would not build up toxic levels. Am I wrong?

Learn more about water-soluble B vitamins including niacin, B6, B12 and folic acid, and why taking too much of these vitamins can be toxic. See the symptoms of overdose and toxicity from B vitamins.'s answer explains.

B Vitamins

CL Answer

Can prenatal vitamins have too much folic acid? Mine has 800 mcg, but isn't that more than what's recommended? Is this dangerous to me or my baby?

Is it possible for prenatal vitamins to have too much folic acid? Find out the correct dosage so that it is not dangerous to babies.

Too Much Folic Acid in Prenatal Vitamins? -- Pregnant woman taking supplements

CL Answer

Which supplements can help treat anemia? Do any supplements cause a low red blood cell count?

Find out which vitamin and nutrient supplements can help prevent and treat anemia in people who are nutrient deficient and learn which supplements may cause low blood cell counts, especially when used in excess.

Woman holding various vitamins and supplements in her hands

CL Answer

Do any supplements or lifestyle changes reduce the symptoms of tinnitus? Is it true that some supplements can cause tinnitus?

Learn which supplements can ease tinnitus, including melatonin and pine bark extract. Understand which may actually cause tinnitus.

Supplements for Tinnitus -- Woman Holding Her Ears

CL Answer

How Should You Take Care of Yourself After You’ve Had COVID-19?

Find out the best way to care for yourself when recovering from COVID-19, including how long you should quarantine, whether you should get vaccinated, when it is safe to undergo a surgery, and how to spot and, possibly, improve lingering symptoms.

Man in wheelchair talking with doctor after recovering from COVID

CL Answer

Room Carbon Dioxide Monitors: A Good Way to Assess Room Ventilation and Reduce COVID Spread?

Learn about carbon dioxide monitors, including how they work, what to look for when buying a device, tips for using them, limitations, and which device is our Top Pick.

Monitor on a table

CL Answer

How can I get tested for the coronavirus? Can I get an at-home test for COVID-19? Which are the best tests? Are any tests free?

Coronavirus (COVID-19) Tests: Where to get COVID-19 tests, including information about free testing, home testing and more. Information about SARS-CoV-2 virus tests, antibody tests and FDA approved tests.

Home Test COVID

CL Answer

Flu Vaccines: How do different flu vaccines compare and which is best for older people?

Learn how flu vaccines differ and find out which may be most suitable for older people, as well as those with egg allergy.

Vial of flu vaccine in front of a syringe and another vial

CL Answer

Do any supplements help prevent or reduce eye floaters?

Find out eye floaters (vitreous floaters) be treated with supplements like vitamin C, lutein, ginkgo, milk thistle, collagen or hyaluronic acid, or with products such as VitreousHealth.

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

CL Answer

5 Tips for Finding a Soap or Body Wash That Won't Irritate Skin

Get 5 tips for finding soap or body wash that won't cause skin irritation. See which soaps we rate best, ingredients to avoid, and phrases on labels that can mislead.

Different bars of soap on a marble countertop

Recalls & Warnings


Hopewell Essential Oils Warned for Coronavirus Claims

On April 27, 2020, the FDA issued a warning letter to Hopewell Essential Oils for selling its essential oils with unsupported claims that they can treat coronavirus (COVID-19).

Product Review

Potassium Iodide (KI) and Iodate (KIO3) Radioprotective Pills Review

Learn How to Choose the Best Radioprotective Iodine Pill and Use It Properly

Product Review

Inactive Ingredients / Excipients in Supplements

Find Out Why Coloring Agents, Sweeteners, Fillers & Other Inactive Ingredients Are In Your Supplements and If They're Safe.

Recalls & Warnings


Complaint Submitted to FTC for doTerra Essential Oil COVID Claims

On January 28, 2022, the website submitted a complaint to the Federal Trade Commission (FTC) against doTerra International, LLC. following a series of Zoom calls from the company titled "Protocols for the Current Climate.

News Release

4/22/2004 shares insights from 2 years of testing supplements for athletic banned substances — Athletes and manufacturers urged to learn how to avoid problems

WHITE PLAINS, NY — April 22, 2004 — Two years after initiating the first program to test dietary supplements for substances banned from athletic competition, today released a short advisory summarizing problems uncovered to-date from its testing.

CL Answer

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

CL Answer

Do any treatments reduce the risk of infection after you've been exposed to someone with COVID-19?

REGEN-COV, a combination of two monoclonal antibodies (casirivimab and imdevimab) is currently the only FDA authorized treatment for post-exposure prophylaxis for COVID-19. Learn more about this treatment to reduce the risk after exposure to COVID, how well it works, safety, who can take it and how to get REGEN-COV.


News Release


USANA products pass screening for substances banned from Olympics

WHITE PLAINS, NY — January 9, 2004 — announced today that six additional products have passed its Athletic Banned Substances Screening Program. tested the products at the request of USANA, a supplement manufacturer. ConsumerLab.

News Release

8/20/2002 announces screening of supplements for banned substances for the United States Olympic Committee — First products to pass now listed on web site

WHITE PLAINS, NY — August 20, 2002 — The United States Olympic Committee (USOC) and (CL) announced today that nine products have passed's recently launched Athletic Banned Substances Screening Program. ConsumerLab.

News Release


Athletic Banned Substances Screening and Certification Program announced by — Tester of supplements to screen for substances banned in Olympics

WHITE PLAINS, NY — February 8, 2002 — ConsumerLab.

Recalls & Warnings


FDA Warns 5 Sellers of Unapproved COVID-19 Tests

Between March 18 and April 6, 2021, the FDA issued warning letters to five companies for selling unapproved, adulterated, and misbranded tests for coronavirus (COVID-19).

Recalls & Warnings


FTC Sues Golden Sunrise for Marketing Deceptive $23,000 Coronavirus Cure

On July 31, 2020, the Federal Trade Commission (FTC) charged Golden Sunrise Nutraceutical, Inc., a California-based company, with deceptively advertising a $23,000 treatment plan as a scientifically proven way to treat COVID-19.

Recalls & Warnings


FTC Charges Seller With Falsely Promising Consumers Next Day Shipping of Face Masks and Other PPE

On July 8, 2020, the Federal Trade Commission (FTC) charged the online marketer, Inc. and its owner, Kevin J. Lipsitz, with falsely promising consumers next-day shipping of facemasks and other personal protective equipment (PPE) to use during the coronavirus pandemic.

Recalls & Warnings


FDA Warns Candy Maker Making Heart Health Claims

On May 31, 2006, the U.S.