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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.
Is Esberitox effective for treating a cold?
Esberitox is promoted to boos the immune system, but can it really shorten the effects of the common cold?
What is monolaurin? Can it really prevent colds, cold sores, or other infections?
Lauricidin (monolaurin) information for preventing colds, immune system function, and safety.
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.
Which supplements help with Raynaud's phenomenon?
Raynaud's phenomenon may be helped by some supplements. Learn more about fish oil, Gingko biloba, and ginseng.
What is EpiCor? Does it really "boost" the immune system and prevent colds?
EpiCor supplement info, including evidence from clinical studies on immune function and cold/flu prevention, safety, and price.
Do any supplements help with the coronavirus (COVID-19)? Do supplements like vitamin D, zinc, vitamin C, or herbals work?
Find out if natural remedies & supplements for coronavirus such as zinc, vitamin C, garlic, or elderberry help to prevent or treat COVID-19.
Is it true that NAC can help clear nasal passages?
Find out if N-Acetyl Cysteine (NAC) can help with post nasal drip & general sinus congestion and about supplements that may reduce cold symptoms.
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.
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.
Is it okay to take a zinc supplement while I am on an antibiotic for a respiratory infection?
Does zinc interfere with the absorption of antibiotics? Learn more about this and other effects in the body.
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?
See our Top Picks for masks. Learn how to make COVID-19 masks from materials at home that can be almost as effective as surgical mask and N-95 masks.
Do vitamins, minerals and nutritional supplements lose effectiveness with exposure to high temperatures and is it safe to order supplements by mail in the summer?
Are vitamins and supplements susceptible to heat? Find out if mail ordering during the summer is safe.
Which supplements are helpful to have when traveling? Any tips on how to best store supplements on trips?
Find out which vitamins & supplements can be helpful when traveling, including melatonin, ginger, and more, and find out how you can carry them with you.
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.
An online supplement seller suggests I pay $10 extra to ship my order of bottled fish oil with freezer packs using priority mail. Is this necessary?
Find out if fish oil supplements need to be shipped with freezer packs to be kept fresh, plus other information about shipping and storing supplements. ConsumerLab.com's answer explains.
Are there any supplements I should avoid when taking acetaminophen (Tylenol)?
Find out if there are any supplements that should be avoided when taking acetaminophen (Tylenol).
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
Is drinking coffee good or bad for heart health?
Learn more about coffee and caffeine, its safety, if it's good for you, how much coffee is too much and its impact on your heart.
Is it safe to consume fish oil as a long-term food supplement?
Learn more about fish oil supplement safety including long-term use, side effects, and more.
The vision supplement I take is based on the AREDS2 formula, but it contains a lot of zinc -- 80 mg in the recommended daily serving. Is it necessary, and safe, to take this much zinc every day?
AREDS information on the safety of supplements containing high levels of zinc, including vision supplements.
What are the health benefits of avocado oil? Is it healthier than olive oil? Which avocado oils are best?
Learn about the health benefits of avocado oil and how it compares to olive oil, evidence for heart health, osteoarthritis and other uses. ConsumerLab.com's answer explains.
Can lysine, vitamin B-12, or other vitamins or minerals help prevent or reduce canker sores?
Lysine, B12, zinc and other vitamins and minerals for canker sores. Find out what supplements can help prevent or reduce canker sores.
Are lozenges and sublingual pills considered dietary supplements?
Learn more about lozenges and sublingual pills (such as echinacea, zinc and B12) including safety warnings.
How do the Pfizer, Moderna and Johnson & Johnson 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.
Tablets I purchased are becoming "crumbly" after a few weeks and are easy to break. Is there a problem with this supplement?
Should you be concerned if your supplement tablets have started to crumble? Learn more including the best way to keep pills from getting soft.
Once I've taken probiotics for a few months, will the positive bacteria remain in my system, or do I have to keep taking them?
Find out how long you should take probiotics through understanding how long the positive bacteria remain in the system.
What is Pycnogenol and does it work?
Learn more about Pycnogenol, including evidence from clinical studies on blood clots, osteoarthritis, cognition, vision, tinnitus, and the skin and safety.
I am curious why some probiotics do not require refrigeration even though they contain some of the same bacteria in probiotics that require refrigeration? Which probiotics need to be refrigerated?
Refrigerating certain probiotic pills and other probiotic supplements is important. Get tips on how to store probiotics properly.
Have you heard of the probiotic, Keybiotics? Does it do what it claims, and is it worth the money they charge?
Whole Body Research Keybiotics probiotic information, including its ingredients and possible cheaper alternatives.
What is lactoferrin and will it really strengthen my immune system?
Info about lactoferrin supplements, clinical evidence for strengthening the immune system, preventing or treating colds, gut health and treating H.
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.
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 are the health benefits of tart cherry juice?
See the evidence for tart cherry juice health benefits from clinical studies. Find out if tart cherry has anti-inflammatory effects, if it can improve sleep, lower high blood pressure, or help for muscle pain and osteoarthritis.
My doctor told me to stop taking supplements because my kidney function was low. After stopping, my kidney function returned to normal. Can taking a lot of supplements really damage the kidneys?
Find out which supplements may damage your kidneys. ConsumerLab explores possible kidney side effects of supplements including chromium, creatine, and vitamin C.
Is it true that oat cereals, like Cheerios, oatmeal, oatflakes and steel-cut oats can be contaminated with a toxin?
Find out if oat cereals, like Cheerios and oatmeal, can be contaminated with the fungal toxin ochratoxin A (OTA). ConsumerLab.com's answer explains.
Is ingesting colloidal silver helpful for any condition and is it safe to use? I'm seeing it promoted for many applications.
Find out if there is evidence showing colloidal silver can help to treat infections, boost the immune system, help with arthritis and more, plus find out if colloidal silver can cause blue skin or other side effects.
I take warfarin (Coumadin), an anticoagulant drug. Are there supplements I should avoid, or be taking, due to this drug?
Find out which supplements should be avoided when taking blood thinners (anticoagulants) like warfarin (Coumadin), including vitamin K, St. John's wort, and curcumin.
I drink organic milk with added DHA Omega-3, but it is expensive. Is it worth paying extra for the added DHA?
Find out if drinking organic milk with added DHA omega-3, such as Horizon Organic Milk, is worth paying more.
Can castor oil eye drops improve or dissolve cataracts? Is castor oil or tea tree oil helpful for other eye conditions such as blepharitis or dry eye?
Can castor oil eye drops help cataracts and glaucoma? Find out if caster oil eye drops are safe to use, and if they help for other conditions. ConsumerLab.com's answer explains.
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.