Showing Results for Cold
Product Reviews (20)
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)
Fish Oil and Omega-3 and -7 Supplements Review (Including Krill, Algae, Calamari, and Sea Buckthorn)
CL Answers (37)
Do any supplements help with the coronavirus (COVID-19)? Do supplements like zinc, vitamin C, or herbals work?
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?
Which supplements are helpful to have when traveling? Any tips on how to best store supplements on trips?
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?
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?
What are the health benefits of avocado oil? Is it healthier than olive oil? Which avocado oils are best?
Tablets I purchased are becoming "crumbly" after a few weeks and are easy to break. Is there a problem with this supplement?
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?
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?
Have you heard of the probiotic, Keybiotics? Does it do what it claims, and is it worth the money they charge?
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.
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?
Is ingesting colloidal silver helpful for any condition and is it safe to use? I'm seeing it promoted for many applications.
I take warfarin (Coumadin), an anticoagulant drug. Are there supplements I should avoid, or be taking, due to this drug?
I drink organic milk with added DHA Omega-3, but it is expensive. Is it worth paying extra for the added DHA?
Can castor oil eye drops improve or dissolve cataracts? Is it helpful for other eye conditions such as blepharitis or dry eye?
Recalls & Warnings (57)
U.S. Seizes Supplement Illegally Marketed for Virus and Cold Use; FDA Steps Up Activity Against Supplements with False Claims
FDA Warns Seller of Arthritis, Blood Pressure, Diabetes Supplements For Making Drug Claims
Maker of Concentration, Pain, Immune and Cholesterol Supplement and More Warned For Drug Claims
Maker of Vitamin C, Aloe and Sexual Enhancement Supplements Warned for Drug Claims and Misbranding
Court Injunction Halts Sale of Cholesterol, CoQ10, Progesterone, Prostate Supplements and More
Seller of Turmeric, Milk Thistle and More Warned for Manufacturing Violations, Drug Claims
Maker of Noni, Nopal, Blood Sugar and Cholesterol Supplements Warned For Drug Claims, Misbranding, and Manufacturing Violations
Supplement Company Warned For Medical Claims and Misbranding Of Omega-3, CoQ10, Noni Juice And More
Illegal Claims on Weight Loss, Immune System Dietary Supplements, and Few Backed by Clinical Data
Seller of "NaturalDoctor" Vitamin C, Echinacea and More Warned for Manufacturing Violations
Clinical Updates (14)
Does Echinacea Help Treat a Cold?
Very little, it seems. A new large, well-controlled study of a commercially sold echinacea supplement failed to show a substantial benefit when given shortly after the first sign of a cold. Evidence tends to be better (although not robust) for echinacea used to prevent a cold before it begins, as opposed to once symptoms start. Find out more (including the product that was tested) in the Echinacea Supplements Review. More >>
Can Echinacea Prevent Colds?
Although the evidence behind echinacea has been mixed, a new study -- the largest to date -- found that taking a particular type of echinacea supplement throughout cold season reduced cold "events" (catching colds and days spent with colds) by 26%. See the update to the Echinacea Supplements Review for details about this particular supplement, including the special way it is taken. More >>
Honey for Coughs and Colds?
Does honey help reduce cold symptoms and improve coughs? Find out what a recent analysis concluded in our updated answer to the question: Do any supplements help prevent or treat a cold?
Zinc for Colds -- Be Careful
The use of zinc for colds has been in the news lately due to a study indicating benefit. Some of the coverage, however, might suggest the wrong conclusion. Be aware that taking zinc pills won't help with a cold; only forms that allow zinc to act directly in the throat or nose can help — and only when taken appropriately. See the Zinc Product Review for details on formulations and dosing that can help with colds. More >>
When Vitamin C May Curb a Cold
A recent small study among men with low to adequate levels of vitamin C showed that supplementing with vitamin C reduced the incidence of colds compared to placebo. The men taking vitamin C also reported having more energy -- although this finding was not statistically significant. Learn more about what vitamin C can and cannot do, the dose used in this study, and results of our tests of vitamin C supplements, in the update to the Vitamin C Supplements Review >>
Zinc Lozenges for Colds
A recent review of placebo-controlled studies of zinc lozenges given at the start of a cold shows that they not only shorten the duration of symptoms in the throat, but in the nose and muscles as well. It is critical, however, that the right type of zinc, dose, and dosing schedule be used. Get the details, as well as our reviews of zinc lozenges and supplements, in the Zinc Supplements and Lozenges Review >>
Probiotic Shortens Respiratory Infections
Studies have shown probiotics to reduce the duration and severity colds when taken throughout a cold season. A new study in children shows short-term use of a probiotic -- started at the time a household member gets sick -- also significantly reduces the duration and severity of acute respiratory infections. For details, including our tests of probiotic supplements, see the Probiotic Supplements Review >>
Vitamin D Reduces Risk of Colds & Flu
A study released today shows that taking vitamin D in a certain way reduces the risk of cold and flu infections by up to 70%. The benefits are greatest for people very deficient in vitamin D. For details, see the "What It Does" section of the Vitamin D Supplements Review (which includes our tests of products) >>
Caution With Elderberry
Although rare, a case of acute pancreatitis was reported after the use of a popular elderberry extract supplement. Get the details in our updated answer to the question: Do any supplements help prevent or treat a cold?
Pycnogenol for Raynaud's?
A new study investigated whether Pycnogenol can help treat Raynaud’s phenomenon, a condition in which hands become painful and discolored when exposed to cold temperatures. Find out if it helped in the update to the question: What is Pycnogenol and does it work?
Probiotic for Cold Symptoms and Gas
A study found that a particular probiotic strain reduced symptoms of upper respiratory infections, as well as gas, in children. For details see the Colds and acute respiratory infections section as well as the Bloating, gas, and abdominal pain section of the Probiotic Supplements Review. Also see our Top Picks for probiotics and kombucha.
How to Use Zinc Lozenges for Colds
Can a Multivitamin Reduce Colds and Flu?
Can regularly taking a multivitamin reduce the chance of getting a cold or flu, or lessen the symptoms and duration of illness among older people? Find out what a recent study showed in the What They Do section of the Multivitamin and Multimineral Supplements Review. Also see our Top Picks among multivitamins for women, men, seniors, children and pets.
Too Much Vitamin D Can Increase Colds
A recent study in people with asthma found that giving high-dose vitamin D increased the risk of developing a cold among those who achieved higher levels of vitamin D or were African-American. Nearly half of those in the study were not vitamin D deficient to start. In contrast, studies have found that giving moderate doses of vitamin D to people who are vitamin D deficient decreases the risk of colds. The point, in our opinion: Maintain an adequate, but not excessive, level of vitamin D. For details (including dosage, levels, and our tests of products) see the Vitamin D Supplements Review >>