Reviews and Information for Beta-Carotene
Vitamin A Supplements
Learn what to look for when choosing the best vitamin A supplement, including beta-carotene and cod liver oil. Review test results and quality and cost comparisons for popular brands. Plus, dosage, safety, side effects, drug interactions and more. Understand what you are taking before you buy.
Vitamin A Supplements Review
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Product Review
Multivitamin and Multimineral Supplements Review
Best Multivitamins -- Caution with Gummies
CL Answer
Why is beta-carotene still an ingredient in some supplements? Isn't it dangerous?
Beta-carotene can be found in supplements. Get clinical evidence from studies on beta-carotene's impact on mortality, smoking, and vision.
Product Review
Vision Supplements Review (with Lutein, Zeaxanthin & AREDS2 Formulas)
Find the Best Vision Supplement Based Our Tests
Product Review
Fruits, Veggies, and Other Greens Supplements Review (Including Spirulina and Chlorella)
Avoid Lead in Greens, Problems with Pills, and Don't Give Up Eating Whole Foods.
Product Review
Astaxanthin Supplements Review
See Which Astaxanthin Products Passed or Failed CL's Tests
CL Answer
Are antioxidant supplements good or bad for you?
Learn more about whether antioxidants like astaxanthin, beta-carotene, coenzyme Q10, curcumin, resveratrol, selenium, vitamin A, vitamin C and vitamin E are safe and if they help prevent chronic diseases.
News Release
December 05, 2024
Some Oats Surprisingly High in Gluten, According to ConsumerLab Tests
White Plains, NY, December 5, 2024 — Oats are a healthy source of fiber and naturally gluten-free. However, it’s not uncommon for oats to become contaminated with gluten during processing, which can cause problems for people with celiac disease and others who follow a gluten-free diet.
News Release
October 06, 2022
Lion’s Mane and Chaga Supplement Labels May Mislead, According to ConsumerLab Tests
White Plains, New York, October 6, 2022 — Lion’s mane and chaga supplements are often promoted to improve memory and mood, boost the immune system, and a range of other health benefits.
Product Review
Lycopene Supplements Review
Find the Best Lycopene Supplements. CL Tests Reveal That Not All Lycopene Supplements Contain What They Claim.
CL Answer
I am very concerned about getting too much vitamin A. Is there danger in getting too much vitamin A if I take fish oil, which I've heard contains a lot of vitamin A, in addition to my multivitamin?
Find out if taking vitamin A along with fish oil can lead to an excess of vitamin A and how to avoid vitamin A overdose.
CL Answer
Which vitamins and minerals should be taken together or separately?
Find out the best way to take vitamins and minerals and which vitamins and minerals should be taken together or separately for proper absorption. ConsumerLab answer explains the best way to take vitamins and minerals.
CL Answer
Do any supplements or foods help prevent sunburn or skin damage from sun exposure? Can any increase your risk of sun-related skin damage?
Find out which supplements may help protect from sunburn and sun-related skin damage, including beta-carotene, vitamins A and C, and cocoa.
Product Review
Zinc Supplements, Lozenges, and Melts Review
Find the Best Zinc Supplements, Including Lozenges for Colds.
Product Review
Rhodiola Rosea Supplements Review
Do Rhodiola Supplements Help With Depression and Anxiety? Find Out and See Which Rhodiola Supplements Provide the Best Quality & Value.
News Release
April 17, 2021
ConsumerLab Identifies Best and Worst Avocado Oils Based on Testing
White Plains, New York, April 17, 2021 — Avocado oil has become increasing popular, but concern about the quality of products was raised in 2020 by a study from researchers at the University of California, Davis that found that as much as 82% of avocado oil samples bought locally or online in ...
News Release
February 23, 2021
ConsumerLab Tests Reveal Best Prostate Supplements With Saw Palmetto and Beta-Sitosterol
White Plains, New York, February 23, 2021 — Over half of men over age 60 may experience increased urinary frequency, difficulty urinating, or other symptoms of an enlarged prostate, also known as benign prostate hyperplasia, or BPH.
Product Review
Cranberry Juices and Supplements Review
CL's Tests Show Which Cranberry Juices and Supplements Are Best and Cost the Least
CL Answer
Risks of Too Many Vitamins & Supplements
Taking too many vitamin supplements -- or taking too much of a particular supplement -- can have short and long-term adverse effects.
CL Answer
What is fermented cod liver oil, such as Blue Ice? Is it better than regular cod liver oil?
Fermented cod liver oil information including if Rosita & Blue Ice (Green Pastures) is as good a source of vitamins and DHA as regular.
CL Answer
Is it true that some vitamins or supplements can cause cancer?
Learn more about the effects of certain vitamins and supplements on cancer, including beta-carotene, vitamins E and B9, and multivitamins.
Product Review
Protein Powders, Shakes, and Meal Replacements Review
Find Out Which Protein Products Passed or Failed Our Tests
Clinical Update
8/25/2013
Antioxidants: Too Much of a Good Thing?
Clinical Update
11/17/2013
Latest Supplement Recommendations
New draft recommendations on vitamin and mineral supplement use were published this week by the U.S. Preventive Services Task Force. The recommendations apply only to healthy adults without nutritional deficiencies. They focus only on the use of supplements for the prevention of cardiovascular disease and cancer at doses not exceeding tolerable upper intake levels. The recommendations are based on existing science and are generally consistent with information already presented in ConsumerLab.com's Product Reviews. We have summarized the recommendations below, with links to more information in ConsumerLab.com's reports:
- Beta-Carotene and Vitamin E: Supplementation with either does not provide a benefit. Vitamin E does not pose a risk of harm, but beta-carotene increases the risk of lung cancer in people at risk for lung cancer.
- Other Single Vitamins, Minerals, Pairs, and Multivitamins: There is inadequate evidence regarding a benefit or a risk of harm.
News Release
August 22, 2019
Best Reishi Mushroom Supplements Identified by ConsumerLab
White Plains, New York, August 22, 2019 — Reishi mushroom supplements are promoted for many uses, from strengthening the immune system and lowering blood sugar, to improving cardiovascular health and reducing cancerous tumors.
News Release
October 26, 2018
Best Vitamin A Supplements, Including Cod Liver Oils, Identified by ConsumerLab
White Plains, New York, October 26, 2018 — Vitamin A is necessary to maintain good vision, skin, and immune functioning, and supplementation can be beneficial for certain conditions — although most people get enough from food and getting too much vitamin A can be dangerous.
CL Answer
I read that sterol supplements to lower cholesterol like CholestOff can block the absorption of vitamins. Is that true?
Find out if CholestOff and other sterol supplements can block vitamin absorption in the body and other safety concerns.
Product Review
Fish Oil, Krill Oil, and Algal Oil Omega-3 (DHA & EPA) Supplements Review
See Our Omega-3 Top Picks and Avoid Rancid Fish Oils.
Product Review
Cholesterol-Lowering Supplements Review (Sterols/Stanols and Policosanol)
Find the Best Cholesterol-Lowering Supplement. See Which Plant Sterol and Policosanol Supplements Passed Our Tests and Are Our Top Picks.
Product Review
Ginger Supplements, Chews & Spices Review
Tests Reveal Best and Worst Ginger Supplements & Spices. Poor Quality and Lead Contamination Discovered in Some Products.
Product Review
Echinacea Supplements Review
Many Echinacea Supplements Fail CL's Tests. Make Sure You Know What You're Getting!
Product Review
Ginseng Supplements Review
Find the Best Ginseng Supplement. Key "Ginsenosides" Found to Range 10-Fold Across Products.
Product Review
Nutrition Bars & Cookies Review (For Energy, Fiber, Protein, Meal Replacement, and Whole Foods)
Find the Best Nutrition Bar or Cookie. ConsumerLab Tests Reveals Not All Nutrition Bars and Cookies Contain What They Claim.
Product Review
Menopause Supplements Review (Soy and Red Clover Isoflavones, Black Cohosh) and Progesterone Creams
Choose the Best Menopause Supplement. Find Out Now Which Soy Isoflavone, Red Clover, Black Cohosh, and Progesterone Products Have the Active Compounds You Want!
Product Review
Iron Supplements Review (Iron Pills, Liquids and Chews)
See Which Iron Supplements Are CL's Top Picks for Different Needs
Clinical Update
1/27/2019
Caution With Antioxidants
A new study suggests it might be risky to take antioxidant supplements during cancer treatment. We have added this important information to our answer to the following question: Can supplements with antioxidants like beta-carotene and vitamins A and E cause you to die sooner?
Clinical Update
1/15/2019
Don't Take Minerals With Certain Supplements
Taking minerals like calcium and magnesium can dramatically reduce the absorption of carotenoids like lycopene, beta carotene, and astaxanthin. Get the details in the Concerns and Cautions section of the Lycopene Supplements Review.
Clinical Update
3/18/2012
Lower Melanoma Risk with Vitamin A
A study of people ages 50 to 76 found the risk of developing melanoma (over an average of 6 years) was 40% lower among those who took a vitamin A supplement than among those who did not. The protective effect appeared strongest and most statistically significant among women, and only occurred with vitamin A from retinol and, not beta-carotene. For details, including the dose (which matters), see the updated information in the Vitamin A Supplement Review. More >>
Clinical Update
1/06/2025
Risk With Too Much Vitamin A
Hypercalcemia (too much calcium in the blood) is a known risk when taking too much vitamin D, but it can also occur with high doses of vitamin A, as highlighted by a recent report. Get the details in our Vitamin A Supplements Review, which includes our Top Picks for vitamin A and beta-carotene.
CL Answer
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.
CL Answer
Do any supplements reduce the side effects of chemotherapy? Should any be avoided?
Find out if there are any supplements that can help with the side effects of chemotherapy, such as nausea, vomiting, diarrhea, nerve damage and others. ConsumerLab.com's answer explains.
Product Review
African Mango (Seed Extract) Supplements for Weight Loss Review Article
Do African Mango Supplements Really Work For Weight Loss? Learn More About Choosing the Best African Mango Supplement: Evidence, Safety, Side Effects & More.
Product Review
Prostate Supplements Review (Saw Palmetto and Beta-Sitosterol)
Find the Best Prostate Supplement for Symptoms of BPH. See Which Prostate Supplement Passed or Failed CL's Tests of Quality.
CL Answer
Is it better to get vitamins from foods or supplements, and are natural vitamins better than synthetic vitamins?
Learn more about the benefits of getting vitamins from food versus supplements, natural versus synthetic vitamins, and more.
Product Review
Probiotic Supplements Review (Including Pet Probiotics)
Probiotics: See What They Really Contain and Our Top Picks
Product Review
Lion's Mane and Chaga Supplements Review
Read Labels Carefully -- Many Can Mislead
Product Review
Reishi Mushroom Supplements Review
Find the Best Reishi Mushroom Supplement. See How Reishi Supplements Differ.
CL Answer
Why does my multivitamin make me nauseous? Is there anything that can help?
Find out if ingredients in multivitamins can cause nausea and gastrointestinal discomfort.
Product Review
PQQ (Pyrroloquinoline Quinone) Supplements Review
Learn What PQQ Does and Which PQQ Supplements are Best
Product Review
Avocado Oil Review
Find the Best Avocado Oil for Purity, Freshness and Taste. Some Others May Include Rotten Avocado or Other Oils.
Product Review
Saffron Supplements Review
See How Saffron Supplements Compare and What They Do
Product Review
Ginkgo (Ginkgo Biloba) Supplements Review
Choose the Best Ginkgo Biloba Supplement. Finding Real Ginkgo Isn't Easy — 60% Fail ConsumerLab's Tests of Quality.
Product Review
Electrolytes & Sports Drinks Review
See Which Sports Drinks, Powders, and Pills Deliver the Right Electrolytes
Product Review
Lavender and Tea Tree Essential Oils Review
Oils Tested for Authenticity and Purity
Product Review
Olive Leaf Extract Supplements Review
Learn What Olive Leaf Does and the Best Brands
Product Review
Ashwagandha Supplements Review
Find the Best Ashwagandha Supplement. Only 38% of Ashwagandha Products Pass Tests.
Product Review
NAD Booster Supplements Review (NAD+/NADH, Nicotinamide Riboside, and NMN)
How Important Is Boosting NAD+ Levels? Find Out and Learn How Booster Supplements Compare.
Product Review
Choline and Lecithin Supplements Review (Including Phosphatidylcholine, CDP-Choline, and Alpha-GPC)
Choose the Best Choline Supplement. Find Out How Much Choline Popular Supplements Really Provide.
CL Answer
Which supplements reduce hearing loss?
Can supplements such as alpha-lipoic acid, magnesium, N-acetyl-cysteine, folate or vitamins B-12, C and/or E help prevent or improve symptoms among people with hearing loss due to excessive noise or aging? Find out what the clinical evidence shows, and learn whether Advanced Hearing Formula, a supplement marketed for ear health, is likely to help.
CL Answer
What are "broad-spectrum micronutrient" supplements, and do they have greater health benefits than multivitamin/multimineral supplements?
Learn about "broad-spectrum micronutrients" and how they compare to multivitamin/multimineral supplements.
CL Answer
Do any supplements help with pancreatitis? Do any cause pancreatitis?
Find out if supplements including digestive enzymes, antioxidants, or medium-chain triglycerides are beneficial for chronic pancreatitis, and learn which supplements might worsen symptoms.
CL Answer
Do hair loss supplements, such as Viviscal, Hair La Vie, and Nutrafol, or topical essential oils work?
Vitamins and supplements that may help with hair loss and thinning, including saw palmetto, beta-sitosterol, protein, iron, and vitamin D.
Product Review
Calcium and Bone Health Supplements Review (Including Vitamins D & K, Magnesium and Boron)
See Which Bone Health Supplements Are Top Picks and Which Fail
Product Review
Vitamin C Supplements Review
Find the Best Vitamin C Supplements
Product Review
Vitamin E Supplements Review
Find the Best Vitamin E Supplement. Tests and Reviews of Popular Vitamin E Supplements & CL's Top Picks.
News Release
September 19, 2015
ConsumerLab.com Tests Popular Prostate Supplements with Saw Palmetto and Beta-Sitosterol
White Plains, New York, September 19, 2015 — Can prostate supplements with ingredients such as saw palmetto or beta-sitosterol improve symptoms of an enlarged prostate, a condition affecting more than half of men over age 60? And, if so, which supplements are properly made and labeled and ...
CL Answer
Are there vitamins or supplements that can reduce my risk of breast cancer? Do any increase cancer risk?
Find out if certain vitamins, supplements and foods such as fish oil, olive oil, vitamin C and others, can help reduce the risk of breast cancer. ConsumerLab.com's answer explains.
Product Review
Digestive Enzyme Supplements Review
Big Differences in Strength Found Among Digestive Enzyme Supplements. CL Tests Reveal Which Are Best.
News Release
January 20, 2015
ConsumerLab.com Identifies Best Vitamin A Supplements, But Cautions That Most People Don't Need Them
White Plains, New York, January 20, 2015 — Vitamin A supplements can save your sight and reduce your risk of infection if you are vitamin A deficient. However, deficiency is rare in the U.S., where people are more likely to be at risk for excess vitamin A.
CL Answer
Is Super Beta Prostate better than other prostate supplements?
Find out if Super Beta Prostate is effective, including clinical evidence and price.
CL Answer
What is desiccated beef liver? What is it used for, and is it safe?
Description of desiccated beef liver, including what it is used for, its nutrient content, and safety concerns.
Product Review
Magnesium Supplements Review (Including Calcium, Vitamins D & K, and Boron)
Find Out What Magnesium Does, Who Needs It, and Our Top Picks Among Supplements
Product Review
Rolled Oats and Steel-Cut Oats Review
Find the Best Rolled and Steel-Cut Oats -- Beware of Unexpected Gluten.
CL Answer
Are there supplements that can reduce prostate size?
How to reduce prostate size using supplements for benign prostatic hyperplasia (BPH), including beta-sitosterol and saw palmetto.
CL Answer
Are L-carnosine supplements helpful and safe?
Learn about the potential health benefits of L-carnosine, as well as possible safety concerns, drug interactions and cost.
CL Answer
I use beta-sitosterol for my prostate. Should it be taken with or without food?
How should you take the prostate supplement beta-sitosterol to maximize absorption? Learn more at ConsumerLab.com.
Product Review
Nutritional Yeast Review
Inaccurate Labeling Discovered on Most Nutritional Yeasts. Best Fortified and Non-Fortified Products Identified.
CL Answer
I'm interested in using Himalayan salt. What are the health benefits with it and other specialty salts? Are there contaminants in these salts?
Himalayan salt health benefits, along with other gourmet salts like Hawaiian and Mediterranean. Info including what's in them and their safety.
CL Answer
Do any supplements or diets help prevent or treat osteoporosis?
If you have osteoporosis, you may be interested in supplements or diets for bone health. Find out which can increase bone strength and density.
CL Answer
Could taking vitamin C (500 mg), CoQ10, grape seed extract, fish oil, vitamin D3/calcium/magnesium/zinc interfere with taking beta-sitosterol with dinner?
Learn about drug interactions & proper dosages for supplements such as CoQ10, vitamin D & C, fish oil, magnesium, zinc and grape seed extract.
CL Answer
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.
Recalls & Warnings
January 16, 2015
CVS Sued for Eye Health Supplement Claims
A class-action lawsuit has been filed against CVS for promoting the company's Advanced Eye Health supplement as comparable to the formula used in the large National Institutes of Health (NIH) eye disease study known as AREDS2, despite the fact that it does not contain the same ingredients.
CL Answer
Do any supplements naturally suppress appetite and help with weight loss?
Learn which natural ingredients can suppress appetite and find if these natural appetite suppressants help with weight loss.
CL Answer
10 Supplements That May Help Reduce Nighttime Urination (And 5 That May Not)
Waking up more than once during the night to use the bathroom? Learn more about the 9 supplements that may help and 5 others that don't.
CL Answer
What supplements should I stop taking before surgery?
Info on which supplements to avoid before surgery due to increased risk of bleeding or interference with anesthesia.
News Release
January 31, 2013
Use of CoQ10, Digestive Enzymes, Probiotics and B Vitamins on the Rise According to ConsumerLab.com Survey
White Plains, New York — February 1, 2013 — A recent survey of over 10,000 people who take supplements shows that CoQ10, digestive enzymes, probiotics, and B vitamins are the four categories experiencing the most growth over the prior year.
CL Answer
Which supplements should be taken with food?
Find out which supplements should be taken with food, including vitamins A, D, E, and K, fish oil, and CoQ10.
CL Answer
Are there supplements I should avoid when taking apixaban (Eliquis) or similar blood thinner drugs like Xarelto?
Learn about supplement interactions with apixaban (Eliquis), rivaroxaban (Xarelto) and other blood thinner drugs in the direct factor Xa inhibitors class.
Clinical Update
1/18/2014
Green Tea "Blocks" Beta-Blocker
A new study shows that drinking green tea can drastically reduce the amount of a beta-blocker (nadolol, Corgard) absorbed into the bloodstream. Beta-blockers are typically taken to lower blood pressure, raising concern for people using green tea along with this beta-blocker and, possibly, related medications. Get the details, along with our tests of green tea drinks and supplements, in the update to the Green Tea Review >>
If you take a beta-blocker (which includes the popular drugs metoprolol (Lopressor, Toprol) and propranolol (Inderal)), be aware that chromium and CoQ10 may offer benefits.
Clinical Update
2/17/2023
Beta-Alanine for Thinking & Mood?
Can supplementing with beta-alanine improve cognitive function or mood in older men and women? Find out what a recent study showed in the Beta-Alanine section of our CL Answer about L-Carnosine (which contains beta-alanine).
Also, see our CL Answer about supplements for memory and cognition.
Clinical Update
9/28/2022
Beta-glucan Supplements for Lowering Cholesterol?
Beta-glucan from cereals such as oats and barley may help lower cholesterol, but be aware that other sources of beta-glucan (including some supplements) may not. Find out in our CL Answer about supplements for heart health.
Clinical Update
7/26/2024
Beta-Alanine for Exercise Performance?
Does supplementing with beta-alanine improve exercise performance or reduce fatigue following high-intensity interval training? Find out what a recent study showed in the "Is Beta-alanine Better than Carnosine?" section of our article about Carnosine.
Clinical Update
4/18/2023
Lowering Cholesterol with Beta-glucan?
Consuming oats, which contain beta-glucan, can help lower cholesterol. But do beta-glucan supplements help? See what a study showed in the Benefits section of our Oat Cereals Review, which includes our Top Picks among oat products.
Also see our article about supplements for heart health to learn which other supplements may help lower cholesterol.
News Release
April 26, 2012
ConsumerLab.com reviews prostate supplements with saw palmetto and/or beta-sitosterol and finds few likely to be effective
White Plains, New York April 26, 2012 — Can supplements reduce the symptoms of prostate enlargement in men, as some products claim? ConsumerLab.com researchers recently tackled this question, investigating the evidence behind prostate supplements and testing the quality of these products.
News Release
September 21, 2011
Not all vitamin A supplements pass ConsumerLab.com tests -- New report reviews beta-carotene and cod liver oil supplements
White Plains, New York — September 21, 2011 — Recent tests of vitamin A supplements by ConsumerLab.com found one to contain only 54.3% of its listed amount of vitamin A. Another product mislabeled alpha carotene as vitamin A.
News Release
June 16, 2011
ConsumerLab.com puts multivitamins to the test
June 16, 2011, New York, NY — Laboratory test results of 60 multivitamins have shown that you can't always judge a supplement by its label—or by its price. "Consumers should know that multivitamins vary widely in quality, "says Tod Cooperman, M.D., President of ConsumerLab.com.
Clinical Update
10/04/2011
Saw Palmetto May Not Work
It's used by many men hoping to reduce urinary symptoms caused by benign growth of the prostate, or BPH, but a new, well-designed study suggests that it doesn't work. Some other recent research suggest the same. Even when doubling and tripling the standard dose, the high-quality saw palmetto extract used in the new study failed to provide benefit.
What should you do? You may want to consider a different supplement -- beta-sitosterol, a phytosterol. The evidence remains fairly good for beta-sitosterol. To find out more about saw palmetto, beta-sitosterol, and the supplements we have tested, see the Prostate Supplements Review. More >>
CL Answer
Does AHCC or active hexose correlated compound have anticancer or antiviral benefits, and is it safe?
Learn about AHCC and active hexose correlated compound, including whether these compounds are beneficial for liver, pancreatic, or prostate cancer, chemotherapy-related side effects, or the flu. Also, find out if AHCC or active hexose correlated compound are safe.
CL Answer
What are the health effects of turkey tail mushroom and is it safe?
Learn about the possible health effects of turkey tail mushroom, including its use as adjuvant treatment for cancer and for boosting immune function, plus get information about possible side effects and find out why ConsumerLab has not yet tested turkey tail products.
CL Answer
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.
Clinical Update
4/15/2022
Mushrooms for Lowering Cholesterol?
The beta-glucan in oats can help lower elevated levels of cholesterol, but can the beta-glucan in mushrooms do the same? Find out in our article about Supplements and Foods for Lowering Cholesterol.
Clinical Update
6/07/2022
Carnosine vs. Beta-alanine
Does beta-alanine, a constituent of L-carnosine, have similar effects to supplementing with L-carnosine itself? Find out what evidence suggests in our updated article about L-carnosine.
Clinical Update
6/24/2022
Beta-sitosterol & Bleeding Risk?
Does taking beta-sitosterol increase bleeding risk? Find out in the Concerns and Cautions section of our Prostate Supplements Review.
CL Answer
Which supplements can cause diarrhea?
Can supplements like magnesium cause diarrhea? Find out which supplements may cause diarrhea, such as vitamin B12, curcumin, magnesium, vitamin C and fish oil.
News Release
September 15, 2009
ConsumerLab.com finds many prostate supplements have correct ingredients, but four fail review -- New report on 19 saw palmetto and beta-sitosterol supplements
White Plains, New York — Tuesday, September 15,2009 — ConsumerLab.com announced test results today from its newest Product Review of Prostate Supplements.
News Release
October 28, 2008
Tests reveal quality problems with vitamin A supplements -- New ConsumerLab.com report focuses on vitamin A, including beta-carotene and cod liver oil
WHITE PLAINS, NEW YORK — OCTOBER 28, 2008 — ConsumerLab.com is cautioning that the amount vitamin A in some supplements may be much higher or lower than the amount stated on labels. Among ten supplements recently selected for testing, ConsumerLab.
CL Answer
Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?
Information about heart health supplements & vitamins that help with cholesterol, including sterol esters, CoQ10, and vitamin D, and which may be bad for the heart, like calcium.
Recalls & Warnings
February 10, 2018
Warning to D-Limonene, Vitamin C Seller
On January 31, 2018 the FDA issued a warning letter to Long Life Unlimited, LLC following a review of the company's website which found promotional statements and testimonials made about products including Balance 600, D-Limonene, Rapha Remedy, Rapha Remedy w/ p73 Wild Oregano, Vitamin C, ...
Clinical Update
9/01/2023
Green Tea Interactions
Drinking green tea can affect the absorption of many drugs, as was most recently shown with raloxifene (Evista), a medication used to treat osteoporosis and reduce breast cancer risk. Learn about these interactions (including those with certain statins, beta-blockers, and blood thinners) in the Concerns and Cautions section of our Green Tea Review. Also see our Top Picks among green tea products.
Clinical Update
1/27/2024
Green Tea Interaction With Medicine
Drinking green tea may significantly affect blood levels of a common beta-blocker, as well as statins, blood-thinners, and thyroid medication. Be aware of these interactions. See the Concerns and Cautions section of our Green Tea Review.
Clinical Update
9/16/2024
Green Tea & Iron Deficiency
Severe iron-deficiency anemia was recently reported after regular consumption of green tea. Get the details in our Green Tea Review, which includes our Top Picks for green tea.
Also be aware that drinking green tea may significantly affect blood levels of a common beta-blocker, as well as statins, blood-thinners, and thyroid medication. See the Concerns and Cautions section of our Green Tea Review.
Clinical Update
10/28/2024
Wellmune for Diabetes?
Does taking Wellmune (which contains beta-glucan) improve blood sugar control in people with type 2 diabetes? Find out what a recent study showed in our article about supplements and foods for controlling blood sugar.
Clinical Update
12/16/2024
Oats and PFAS
Could consuming oat β-glucan reduce levels of toxic PFAS in the body? See what a recent study in mice found in the Benefits of Oats section of our new Oats Review, which includes our Top Picks for rolled ("old-fashioned") and steel-cut oats.
Also see our Top Pick water filter pitcher for removing PFAS from water, and our article about avoiding PFAS in food, water, and other products.
Clinical Update
8/03/2019
Saw Palmetto for Prostate?
A recent clinical study is the latest to evaluate the potential benefit of saw palmetto in reducing symptoms of benign prostatic hypertrophy (BPH) in men. Find out what this, and previous studies, have shown in the What It Does section of the Prostate Supplements Review. Also see our Top Picks for saw palmetto and beta-sitosterol supplements.
Clinical Update
3/27/2025
A Way to Remove Forever Chemicals?
Does consuming oat β-glucan reduce levels of toxic PFAS ("forever chemicals") in the body? See what a recent analysis found in the Benefits of Oats section of our Oats Review, which includes our Top Picks for rolled ("old-fashioned") and steel-cut oats.
Also see our Top Pick water filter pitcher for removing PFAS from water, and our article about avoiding PFAS in food, water, and other products.
News Release
October 02, 2008
ConsumerLab.com finds melatonin supplements range in strength but ingredient quality is high
WHITE PLAINS, NEW YORK — OCTOBER 2, 2008 — ConsumerLab.com announced test results today from its new Product Review of Melatonin Supplements. Melatonin supplements may help treat certain sleep disorders and disturbances, including jet lag.
Recalls & Warnings
February 13, 2013
Manufacturer of Heart, Multivitamin, Cranberry, and Longevity Supplements Warned For Adulteration and Drug Claims
On January 29, 2013, the FDA issued a warning letter to M.D.R. Fitness Corp. following a facility inspection which found violations of good manufacturing practices which cause the company's products to be adulterated.
News Release
September 17, 2008
ConsumerLab.com's tests of menopause supplements reveal wide range in strength and quality; mislabeling and contamination discovered -- Soy and red clover isoflavones, black cohosh, and progesterone products tested
WHITE PLAINS, NY — September 17, 2008 — Risks associated with traditional hormone therapy for symptoms of menopause have increased public interest in alternative treatments, particularly dietary supplements. But a report today of recent tests by ConsumerLab.
News Release
August 12, 2008
ConsumerLab.com finds improvements in labeling of nutrition bars but potential pitfalls exist -- New report compares 20 bars, including those for protein, fiber, energy and whole food
WHITE PLAINS, NY — August 12, 2008 — Labeling on nutrition bars has become more accurate, according to a new report by ConsumerLab.com.
Recalls & Warnings
October 10, 2014
Seller of Multivitamin Warned for Drug Claims
On September 25, 2014, the FDA issued a warning letter to Multimmunity, Inc., following a review of the company's website which found statements made about the dietary supplement Multimmunity to be drug claims.
Recalls & Warnings
February 06, 2023
Recalled Eye Drops Linked to Vision Loss and One Death
On February 2, 2023, Global Pharma Healthcare issued a nationwide recall of its Artificial Tears Lubricant Eye Drops due to potential contamination with bacteria that can cause serious infection, blindness, and death.
News Release
February 06, 2006
ConsumerLab.com finds most prostate supplements have correct ingredients, but three fail testing — Results posted for 22 supplements containing saw palmetto and beta-sitosterol
WESTCHESTER COUNTY, NEW YORK — FEBRUARY 6, 2006 — ConsumerLab.com announced test results today from its new Product Review of Prostate Supplements.
Recalls & Warnings
June 27, 2024
“Authentic” Rose Oil Often Is Not
Damask rose essential oil (Rosa × damascene) and products claiming to contain this oil, or “authentic rose oil” may often be adulterated or contain less expensive oils instead, according to a recent bulletin from the American Botanical Association (ABC).
Recalls & Warnings
December 15, 2020
FDA Warns Seller of Evening Primrose Oil and Beta Glucan
On December 2, 2020, the FDA issued a warning letter to Smoky Mountain Naturals, LLC following a review of the company's website, which found statements made about the company's products Evening Primrose Oil and Beta Glucan to be drug claims.
News Release
August 16, 2005
ConsumerLab.com tests potassium supplements — Report now online for sixteen products
WHITE PLAINS, NY — August 16, 2005 — ConsumerLab.com has released a new report on the quality of potassium supplements. Potassium is used to treat or prevent potassium deficiency caused by diuretic drugs ("water pills"), prolonged vomiting, diarrhea or laxative abuse.
News Release
January 09, 2004
USANA products pass ConsumerLab.com screening for substances banned from Olympics
WHITE PLAINS, NY — January 9, 2004 — ConsumerLab.com announced today that six additional products have passed its Athletic Banned Substances Screening Program. ConsumerLab.com tested the products at the request of USANA, a supplement manufacturer. ConsumerLab.
News Release
August 20, 2002
ConsumerLab.com announces screening of supplements for banned substances for the United States Olympic Committee — First products to pass now listed on ConsumerLab.com web site
WHITE PLAINS, NY — August 20, 2002 — The United States Olympic Committee (USOC) and ConsumerLab.com (CL) announced today that nine products have passed ConsumerLab.com's recently launched Athletic Banned Substances Screening Program. ConsumerLab.
Recalls & Warnings
March 26, 2021
Nine Banned Stimulants Found in Workout, Weight Loss Supplements
Recent analysis of 17 brands of sports/energy and weight loss supplements sold in the U.S. found nine prohibited stimulants formulated into eight different combinations, and none of these combinations have been studied in people.
Recalls & Warnings
January 19, 2022
FDA Warns Seller of Carnitine and Alpha Lipoic Acid Supplements
On November 18, 2021, the FDA issued a warning letter to GeroNova Research Inc.
Recalls & Warnings
May 14, 2021
Maker of Care by Design CBD Settles Charges of Unsupported Claims
On May 5, 2021, Cannacraft, Inc.
Recalls & Warnings
February 02, 2021
Seller of Aloe Products Warned for Claiming to Treat Joint Stiffness
On January 22, 2021, the FDA issued a warning letter to American Global Health Group, LLC following a review of the company's website, which found statements made about the company's products AloeCure VeraFlex, AloeCure Advanced Formula Capsule, AloeCure Pure Aloe Vera ...
Recalls & Warnings
February 02, 2021
FDA Warns Seller of Reishi Mushroom Supplements
On January 6, 2021, the FDA issued a warning letter to Entia Biosciences, Inc following a review of the company's website, which found statements made about the company's products Lion's Mane - All Natural Supplement, Antrodia Mushroom Powder, Maitake Mushroom Powder, Reishi ...
Recalls & Warnings
February 02, 2021
FDA Warns Seller of Ginger, Echinacea, and More
On December 10, 2020, the FDA issued a warning letter to Prairie Dawn Herbs following a review of the company's website, which found statements made about the company's products Chest Tea, Ginger Oil, Dandelion root Tincture, Echinacea purpurea Tincture, Antispasmodic Tincture, ...
Recalls & Warnings
January 21, 2021
Federal Court Bars Fusion Health From Promoting Vitamin D for COVID-19
On January 8, 2021, the United States Department of Justice announced a permanent injunction has been entered, barring dietary supplement marketer Matthew Ryncarz and his companies Fusion Health and Vitality LLC dba Pharm Origins and Fusion Ionz LLC dba Pharm Origins from making claims that their ...
Recalls & Warnings
January 20, 2021
Seller of Omega-3 Warned for Making Claims to Treat Focus, Mood
On December 9, 2020, the FDA issued a warning letter to Bodyhealth.com, LLC following a review of the company's website, which found statements made about the company's products Healthy-Thin Energize, Body Detox (Oral Spray), and Omega 3 Health to be drug claims.
Recalls & Warnings
January 20, 2021
FDA Warns Seller of Vitamin D, Curcumin and CoQ10 Promoted for Treating COVID-19
On December 28, 2020, the FDA issued a warning letter to Smarter Nutrition, Inc. following a review of the company's website, which found statements made about the company's products Smarter Curcumin, Smarter Ubiquinol, and Smarter Vitamin D3 to be drug claims.
Recalls & Warnings
January 12, 2021
Seller of Cholesterol, Weight Loss Products, and More Warned for Claims
On November 17, 2020, the FDA issued a warning letter to Bonagens following a review of the company's website, which found statements made about the company's products Anti-Aging Supports, Cholesterol & Diabetes Control, Gout Control, Hypertension Control, Liver Supports, Lungs ...
Recalls & Warnings
January 12, 2021
FDA Warns Seller of Joint and Hair Loss Products
On December 22, 2020, the FDA issued a warning letter to Speedwinds Nutrition, Inc. following a review of the company's website, which found statements made about the company's products Synotrex and Sephren to be drug claims.
Recalls & Warnings
January 12, 2021
FDA Warns Seller of Turmeric, Ashwagandha, Glucosamine, and More
On December 18, 2020, the FDA issued a warning letter to Reddy Naturals following a review of the company's website, which found statements made about the company's products Glycostasis, Glucosamine Curcumin, Turmeric 50, Turmeric Curcumin, Cetyl Curcumin, Ashwagandha, Huruli, ...
Recalls & Warnings
May 19, 2020
FTC Sends Refund Checks to Consumers of Unproven Weight Loss and Sexual Enhancement Supplements
On May 19, 2020, the FTC announced it is mailing 143,636 checks totaling more than $8,500,000 to consumers who purchased deceptively marketed supplements.
Recalls & Warnings
April 02, 2021
FDA Warns Sellers of Prostate, Reishi, Immune Products, and More
On March 16, 2021, the FDA issued warning letters to two companies following reviews of their websites which found statements made about the companies' products to be drug claims.
Recalls & Warnings
January 29, 2018
Seller of Male Enhancement, Prostate Supplements & More Warned for Drug Claims
On January 10, 2018, the FDA issues a warning letter to USA Labs AKA Power Source Distributors, Inc following a review of the company's website which found statements made about its products, including Maximum Male, Beta 300 (Beta Prosturol), Chromium Max 1000, DHEA, Healthy Cold-X and ...
Recalls & Warnings
May 02, 2017
Seller of Amino Acid Supplements & More Warned for Manufacturing Violations
On April 20, 2017 the FDA issued a warning letter to Naturecom Inc.
Recalls & Warnings
August 06, 2016
Some Supplements May Cause or Exacerbate Heart Failure (Includes vitamin E and many herbs)
Taking certain supplements may be dangerous for people with heart failure, according to a statement from the American Heart Association (AHA) which was published in the journal Circulation (August 2, 2016).
Recalls & Warnings
March 15, 2016
FDA Warns Sellers of Weight and Workout Supplements Containing Acacia Rigidula
On March 7, 2016, the FDA issued warning letters to five sellers of supplements which were labeled as containing Acacia rigidula, an ingredient which is not permitted in dietary supplements.
Recalls & Warnings
November 20, 2013
Another Meth-Like Compound Discovered In Weight Loss Supplements
A "non-natural" amphetamine-like compound, identified as beta-methylphenethylamine, was discovered in nine supplements recently tested by FDA scientists.
Recalls & Warnings
April 08, 2015
Does Your Weight Loss or Sports Supplement Contain Synthetic Amphetamine?
A study published on April 7, 2015, reported that among 21 weight loss, sports and cognitive enhancement supplements labeled as containing the plant extract Acacia rigidula, more than half were found to contain a synthetic, amphetamine-like compound called beta- methylphenylethylamine ...
Recalls & Warnings
December 12, 2014
Seller of B-12, Zinc, Echinacea and More Warned for Manufacturing Violations and Drug Claims
On November 14, 2014, the FDA issued a warning letter to Scientific Botanicals Company, Inc.
Recalls & Warnings
November 06, 2014
Seller of Prostate, Heart Supplements and More Warned for Drug Claims
On October 9, 2014, the FDA issued a warning letter to Health Research Laboratories, LLC/New World Health, following a review of the company's websites, which found statements made about AtheChel Advanced, Betarol, BioTherapex, Omega-3 Cardio Plus, RejuvaLifeRx, and Ultimate Health Formula to be ...
Recalls & Warnings
April 26, 2015
FDA Identifies More Products Listing Synthetic Amphetamine
On April 22, 2015, the FDA issued warning letters to sellers of weight loss and workout supplements that list a synthetic, amphetamine-like compound called beta- methylphenylethylamine (BMPEA) on product labels.
Recalls & Warnings
February 15, 2013
Energy Drink Recalled Due To Bacterial Contamination
On December 21, 2012, NBTY issued a voluntary recall of the energy supplement MET-Rx Extreme Thermo Rage Watermelon 8 fl. oz. (Manufactured by MET-Rx Nutrition, Inc.) due to bacterial contamination.
Recalls & Warnings
March 21, 2014
Homeopathic Products Recalled Due to Allergy Risk
On March 20, 2014, Terra-Medica, Inc. issued a voluntary recall of 56 lots of homeopathic products including, Pleo-FORT, Pleo-QUENT, Pleo-NOT, Pleo-STOLO, Pleo-NOTA-QUENT, and Pleo-EX.
Recalls & Warnings
April 16, 2016
Workout Supplement Containing Acacia Rigidula Recalled
On March 18, 2016, Nubreed Nutrition, Inc. issued a recall of all lots of its "pre-workout" supplement Undisputed which is labeled as containing Acacia rigidula, an ingredient which is not permitted in dietary supplements.
Recalls & Warnings
November 29, 2016
Seller of Mineral, Joint Supplements and More Warned for Manufacturing Violations, Drug Claims
On July 1, 2016, the FDA issued a warning letter to BioGenyx-Basic Reset, following a facility inspection which found the company's products, including Ionyte, Aqualyte, Beta Factor, Bee Gold and Primo Java to be adulterated because they were prepared, packed, or held under ...
Recalls & Warnings
October 18, 2017
Total Body Nutrition Warned for Banned Stimulant in Supplements
On September 28, 2017, the FDA issued a warning letter to Total Body Nutrition following a facility inspection which found some of the company's products to be adulterated because they were prepared, packed, or held under conditions that violate Current Good Manufacturing Practices for dietary ...
Recalls & Warnings
January 21, 2014
"Stem Cell" Supplement Recalled Due to Allergen Risk
On January 19, 2014, Stemvida recalled StemAlive 90 Capsules because they were found to contain undeclared milk (labeled as bovine colostrum).
Recalls & Warnings
November 20, 2013
$2 Million In Weight Loss and "Fat-Burning" Supplements Seized
On November 12, 2013, U.S. Marshals seized more than $2 million worth of supplements from Georgia-based Hi-Tech Pharmaceuticals, Inc.
Recalls & Warnings
August 27, 2013
Immune Supplement Recalled Due To Undeclared Milk
On August 23, 2013, Reaction Nutrition, LLC issued a voluntary recall of immune support supplement LIVE CLINICAL 90 CAPS because it contains undeclared milk.
Recalls & Warnings
June 23, 2013
Weight Loss Supplements Containing DMAA Recalled
On June 15, 2013, dietary supplement retailor Beta Labs, LTD issued a recall of certain lots of "fat burner" and weight loss supplements Oxyphen XR, Phentalene, Phen FX and Red Vipers because they contain 1,3-dimethylamylamine (DMAA).
Recalls & Warnings
February 20, 2013
FDA Warns USPLabs For Adulteration and Drug Claims
On December 4, 2012 the FDA issued a warning letter to USPLabs, LLC following facility inspections which found the company's products, including dietary supplements Jacked3d, OxyElite Pro, Prime, and Super Cissus, to be adulterated because they were prepared, packed, or held under conditions that ...
Recalls & Warnings
May 30, 2015
Seller of Supplements for Herpes, Prostate Cancer & More Warned for Drug Claims
On May 7, 2015, the FDA issued a warning letter to Strictly Health Corporation, following a review of the company's websites which found statements made about FENVIR, Prosta Pep and Tonalin brand CLA to be drug claims.
Recalls & Warnings
April 29, 2015
FDA Targets Weight Loss and Workout Supplements Listing Synthetic Stimulant DMBA
On April 24, 2015, the FDA issued warning letters to sellers of weight loss and workout supplements that list a synthetic, amphetamine-like compound called 1,3-dimethylbutylamine (DMBA) on product labels.
Recalls & Warnings
August 26, 2014
Seller of Immune Supplement Warned for Drug Claims
On August 12, 2014, the FDA issued a warning letter to Ad-Med Biotechnology, following a review of the company's websites and product labels, which found statements made about Immune Active Adult Formula and Immune Active Children's Formula to be drug claims.
Recalls & Warnings
February 07, 2013
Growth Factor Supplement For "Size, Strength and Stamina" Recalled Due To Potential Contamination
On January 2, 2013, EonNutra, LLC issued a voluntary recall of specific batches of Soto Supplements Growth Factor Complex 200 GFC 200 (2 fl oz.) liquid dietary supplement due to potential bacterial contamination.
Recalls & Warnings
January 23, 2013
USPLabs Settles Class Action Lawsuit Over Controversial DMAA Ingredient
On December 18, 2012, a settlement was approved in the class action lawsuit against USPLabs, which alleged the company's use of the ingredient DMAA (1,3-dimethylamine) in the supplements OxyELITEPRO and Jacked3d was not safe or legal.
Recalls & Warnings
July 09, 2010
FDA Issues Warning on Herbal Weight Loss Supplement
On July 8, 2010, the U.S. Food and Drug Administration (FDA) warned that Que She, marketed as an herbal weight loss supplement, contains active pharmaceutical ingredients not listed on the product label that could harm consumers, especially those with cardiovascular conditions.
Recalls & Warnings
October 28, 2015
GNC Accused of Selling Supplements with Unlawful Ingredients
On October 22, 2015, Oregon Attorney General Ellen Rosenblum filed a lawsuit against supplement retailer GNC, alleging that the company sold products that were adulterated with BMPEA and picamilon, which are not lawful dietary supplement ingredients.
