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CL Answers (88)

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What is serrapeptase and does it work?

Serrapeptase is a proteolytic enzyme. Learn more about it's effectiveness including evidence from clinical studies on pain and inflammation.

Serrapeptase for Inflammation and Pain

Do any supplements help prevent or improve cataracts?

Find out which supplements may help with cataracts, including selenium and vitamins A, B1, B3, C, and E.

How do I choose the best magnesium supplement?

Choosing the best form of magnesium supplements can be tricky due to the many different types (magnesium aspartate, bicarbonate, carbonate, chloride, citrate and others).

Choosing the Best Magnesium Supplement -- Magnesium capsules, powders and liquids

How do I choose the best CoQ10 supplement?

Looking to choose the best CoQ10 brand supplement? Understand which CoQ10 you are buying, differences in dose, absorption, quality and more. ConsumerLab explores this topic.

CoQ10

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.

Woman with Cold Holding Pill Bottle

I take levothyroxine (Synthroid), a thyroid hormone to treat hypothyroidism. Are there supplements I should avoid, or be taking, due to this drug?

Is taking certain supplements and hypothyroidism medications bad? Learn which supplements can interact with thyroid hormone medications like levothyroxine (Synthroid), thyroid hormone levels, and laboratory tests.

Levothyroxine (Synthroid) Supplement Interactions

Are people with kidney disease at risk of getting too much potassium if they take a multivitamin? Which multivitamins are best for people with kidney disease?

Learn if people with kidney disease are at increased risk of getting too much potassium from multivitamins, find out which multivitamins do not contain potassium, and learn what other products should be avoided by people restricting potassium intake.

Multivitamins on pharmacy shelf

Is it safe to take curcumin or turmeric supplements for a long period of time?

Information on the long-term effects of curcumin or turmeric supplements. Find out if curcumin and turmeric is safe to take for long periods. ConsumerLab explores these questions.

Is It Safe to Take Turmeric or Curcumin Supplements Long-Term? -- Bottle of Turmeric Capsules

Do any supplements help prevent or treat osteoporosis?

If you have osteoporosis, you may be interested in supplements for bone health. Find out which supplements can increase bone strength and density.

Supplements for Osteoporosis -- Doctor and older woman looking at spinal x-ray

Are light boxes effective for preventing and treating seasonal affective disorder (SAD), also known as "winter depression"? Which light boxes are best?

Learn about the benefits and safety of light boxes (including who is most likely to benefit), how to use these devices, which commercially available products appear to meet the technical requirements, and who should not use light boxes.

Man reading a book while sitting in front of a light box

When taking a statin drug like Lipitor or Crestor, are there supplements I should avoid or take?

Learn about the interactions between certain supplements and atorvastatin (Lipitor), rosuvastatin (Crestor), and other cholesterol-lowering statins.

Statin Interactions With Supplements -- close-up of statin medication box and tablets

Which is the best form of magnesium to take - one that contains the most magnesium and is best absorbed?

Info on which is the best form of magnesium supplements to take and what to look for when choosing the best magnesium supplement. ConsumerLab.com explains.

Magnesium Supplements Reviewed By ConsumerLab.com

Which supplements can help with arthritis?

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

Supplements for Osteoarthritis and Rheumatoid Arthritis -- Women With Arthritic Hands

Do I need to divide my daily 300 mg dose of CoQ10 into smaller doses, or can I take it all at once?

Find out when to take CoQ10 supplements. Should you take CoQ10 at once, or in smaller doses? Understand the best way. ConsumerLab.com explains.

The Best Way to Take CoQ10 -- CoQ10 Supplement

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.

Supplements for Flu -- women with the flu sitting on couch with tissues, thermometer, warm drink

Which is the best pulse oximeter for home use?

Best pulse oximeter for home use (COVID-19, asthma and COPD). Differences between home use and FDA-approved medical pulse oximeters.

Best Pulse Oximeter for Home Use -- Pulse Oximeter

Can taking too much vitamin B-12 be dangerous? The label on my B-complex states it contains 50,000% of the Daily Value!

Find out the daily value for vitamin B-12 and the potential side effects of taking too much B-12. ConsumerLab explains why taking too much vitamin B-12 can be harmful.

The danger of taking too much vitamin B-12 -- bottle of vitamin B-12 with pills on the table spelling out 'B-12'

I have type 2 diabetes. Should I be concerned about ingredients like maltodextrin and maltitol that are found in some protein bars and drinks?

Learn more about maltitol and maltodextrin and their effects on blood glucose levels for people with type 2 diabetes.

Are there any supplements I should avoid when taking an antibiotic? Are there any that may be helpful?

Find out which supplements can negatively interact with antibiotics, including vitamin K, magnesium, and calcium, and which may be helpful when taking antibiotics.

Supplement Interactions With Antibiotics -- man reading prescription bottle instructions

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.

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.

Supplements to stop before surgery - operating room

My doctor warned me that red yeast rice can cause liver damage - is that true?

Can red yeast rice cause liver damage? More information on its effects, including possible danger to the liver and kidneys.

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.

I'm trying to pick a good multivitamin for my children and husband, and for myself. Any suggestions based on your research?

Find out how to pick the best multivitamin for you and your family, based on diet, price, and effectiveness.

Multivitamin/Multimineral Supplements Reviewed by ConsumerLab.com

What is berberine? Can it really lower blood sugar? Are there any cautions? Which supplements are best?

What is berberine and can it really lower blood sugar for someone with type 2 diabetes? Find out more information about berberine.

Berberine

If I already take red yeast rice, would adding high-dose niacin help further reduce my cholesterol levels, and would this be safe?

Learn more about the effect of combining red yeast, statins and high-dose niacin on cholesterol and safety.

Red Yeast Rice Supplements Reviewed by ConsumerLab.com

Which supplements help to improve energy and decrease fatigue?

Energy supplements and vitamins - Some can help increase energy and reduce fatigue, including CoQ10, curcumin/turmeric, cocoa, and B vitamins.

Supplements to Improve Energy and Decrease Fatigue -- tired woman yawning at desk

Does CBD interact with other medications?

Find out which drugs and medications can interact with CBD oil. CBD (cannabidiol) is metabolized by cytochrome p450 enzymes CYP3A4 and CYP2C19, and therefore, may affect the metabolism of drugs that are also metabolized by these enzymes. ConsumerLab.com's answer explains.

CBD (cannabidiol) drug interactions -- doctor holding bottle of CBD oil

Which supplements help with erectile dysfunction?

Supplements for erectile dysfunction. Find out which supplements can help with ED, including ginseng, L-arginine, and maca.

Which supplements are helpful for age-related macular degeneration (AMD)?

Find out which vitamins & supplements are helpful for macular degeneration (AMD), such as lutein, zeaxanthin, and others used in the AREDS studies.

Supplements for Macular Degeneration -- woman getting eye examination

Can psyllium help control hunger and appetite?

Learn more about psyllium (found in Metamucil), including effects on appetite and hunger control, results from clinical studies and safety.

Psyllium

Do biotin supplements really improve hair and nails?

Does Biotin really work for hair and nails? Find out about strengthening and growth for hair and nails.

Biotin Supplements for Hair and Nails -- woman looking at hair and nails in mirror

When is the best time of day to take red yeast rice?

Find out the best time of day to take red yeast rice supplements. Some statins should be taken at night, so should red yeast rice be taken before bedtime too? ConsumerLab.com's answer explains.

Is it best to take SAMe with or without food? Do I need to take B vitamins when taking SAMe?

Find out if SAMe should be taken with our without food, or B vitamins. ConsumerLab.com's answer explains.

What is benfotiamine and can it really improve or prevent complications from diabetes?

Can benfotiamine really improve or prevent complications from diabetes? Learn more.

What are the health benefits of bone broth, and which bone broth is the best?

Learn about the health benefits of bone broth, a good source of protein and collagen, including whether bone broth can help for joint pain or osteoarthritis, improve skin or reduce wrinkles, heal the gut or boost the immune system. Plus, see ConsumerLab.com's tests of popular bone broths, find out how much collagen they contained, and which bone broths are best.

Bone Broth Benefits -- cup of bone broth

What is the best way to take melatonin to get a good night's sleep?

Learn more about the best way to take melatonin for better sleep. When to take it, how to take it, and general melatonin information.

Melatonin Supplements Reviewed by ConsumerLab.com

When taking a water-soluble version of CoQ10, do I still need to take it with food?

Find out how best to take CoQ10 supplements, with water or food.

water-soluble version of CoQ10

Which supplements are important after bariatric surgery (i.e., weight loss or stomach-reducing surgery)? Are there any I should avoid?

Find out which supplements may help after weight loss or stomach reducing surgery, including iron and calcium, and which should be avoided.

Bypass Surgery Sign

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. ConsumerLab.com's answer explains.

Is My CoQ10 Expired? -- CoQ10 capsules in hand

The suggested daily serving for my fish oil supplement, three 1,000 mg softgels, seems like a lot. Do I really need to take this much?

Information on the proper fish oil dosage per day. See the best dosage for different uses, such as lowering triglyceride levels or improving mood, plus information on overdose.

Fish Oil

Do any supplements help relieve stress?

Are there actually supplements for stress relief and panic attacks? Learn more about holy basil, fish oil, L-theanine, and ginseng.

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. ConsumerLab.com's answer explains.

B Vitamins

To lower my cholesterol, I am taking a phytosterol supplement. Will taking other supplements, like red yeast rice or fish oil, help lower my cholesterol even further?

Learn more about combining phytosterols and other cholesterol-lowering supplements like red yeast rice or fish oil.

Cholesterol

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.

Vitamins & Minerals That Should Be Taken Together or Separately -- various vitamins in spoons

Does coconut water help re-hydrate as well as sports drinks?

Find out how coconut water compares to sports drinks, including rehydration and possible side effects.

What is the best way to take curcumin? Is it better to take it all at once or in divided doses?

Find out the best way to take curcumin and turmeric supplements to increase absorption and bioavailability, plus the best way to cook with turmeric spice. ConsumerLab.com's answer explains.

Turmeric and Curcumin Supplements and Spices Reviewed by ConsumerLab.com

How does turmeric spice compare to curcumin (turmeric extract) in supplements? I sprinkle it on my foods and wonder if that's equivalent to taking a supplement.

What is the difference between turmeric spices used in the kitchen and turmeric supplements? Is sprinkling turmeric on my food equivalent to taking a turmeric supplement? ConsumerLab's answer explores this question.

Turmeric Spice vs. Turmeric Supplements

What is the best source of vitamin D3 -- from lanolin in sheep's wool or from fish oil?

Learn more about vitamin D3 sources, such as lanolin (from wool) and fish oil, as well as their prices and their effects.

What is the difference between the "Best By" date and the "Date of Manufacture" on a supplement label? How do I know how long my supplement will last before it "goes bad"?

To understand if your vitamins and supplements expire, learn more about the "Best By" and "Date of Manufacture" dates on labels.

How do I choose the best CLA supplement for slimming?

Learn how to choose the best CLA supplements (conjugated linoleic acid) and find out if CLA helps for slimming or weight loss.

Is it okay to take vitamin D3 and fish oil together?

Find out if taking vitamin D and fish oil is okay, how it effects absorption, and the best way to take vitamin D to improve absorption. ConsumerLab.com's answer explains.

hand holding vitamin D and fish oil capsules

What is the best form of iron supplement?

Find out the best form of iron (such as ferrous glycinate, rerrous bisglycinate, ferrous sulfate and others) to take as a supplement, which form is best-absorbed and least likely to cause stomach upset. ConsumerLab.com's answer explains.

Iron Supplements Reviewed by ConsumerLab.com

Is it true that protein can strain the kidneys as you get older?

Find out if protein strains the kidneys as you get older, how much protein older adults need and the best way to take protein supplements.

Protein, Meal, and Diet Powders, Shakes, and Drinks Tested by ConsumerLab.com

Is aloe an effective remedy for dry eye?

Find out if aloe can be used as an eye drop to help for dry eye, plus information about other supplements that may help for dry eye.

Aloe for Dry Eye? -- Close up of cut aloe leaf and drop of aloe gel

Is it safe to take CoQ10 while taking blood thinners like warfarin or Plavix (clopidogrel)?

Learn more about the possible counteractive effects of CoQ10 and blood thinners, including safety.

CoQ10

Does Longevinex resveratrol really help for age-related macular degeneration?

Longevinex resveratrol information including how it helps age-related macular degeneration & clinical evidence.

When is the best time of day to take a multivitamin?

Find out the best time of day to take your multivitamin for best absorption of vitamins and minerals, whether you should take your multi with food, which vitamins and minerals may inhibit the absorption of other vitamins and minerals, or medications. ConsumerLab.com's answer explains.

Why aren't there children's multivitamins specifically for girls vs. boys?

Find out the best children's multivitamins for girls and boys, why there aren't different multivitamins for girls and boys, why teen girls and boys have different nutritional needs, especially when it comes to iron, and the best multivitamins for children, teen boys and girls, adults, adults over 50, prenatal vitamins and vitamins for pets.

Kids multivitamins

Is it best to take probiotic supplements with or without food? It seems like everyone has a different recommendation.

When is the best time to take probiotic supplements? Learn if you should take your probiotic with or without food.

Probiotics

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.

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

What is the benefit of magnesium orotate compared to other forms of magnesium?

Find out if magnesium orotate is the best form of magnesium for supplements, including safety concerns.

Magnesium

Can I take CoQ10 at the same time as my statin, or should I take them separately?

Taking CoQ10 and statins (such as lovastatin and simvastatin)? Find out if you can take them at the same time or if they should be taken separately. ConsumerLab.com's answer explains.

Can magnesium supplements reduce heart palpitations or PVCs?

Having low blood levels of magnesium has been associated with abnormal heart rhythms known as PVCs (premature ventricular complexes). Find out if taking magnesium supplements can help.

Magnesium and Palpitations (PVCs) -- Woman With Heart Palpitations

Is Ester-C the best form of vitamin C?

Info on Ester-C Vitamin C, including which form of vitamin C is best, fully-reduced, liposomal and others based on absorption and side effects. ConsumerLab.com's answer explains.

Is Ester-C the Best Form of Vitamin C? -- bottle of Ester-C

Do arnica pills really work to prevent bruising?

Find out if arnica tablets really work to prevent bruising, information about homeopathic products and more. ConsumerLab.com's answer explains.

Arnica Tablets for Bruises -- container of Arnica tablets

Which supplements can help to lower blood pressure?

Supplements to lower blood pressure, including CoQ10, vitamin C, fish oil, and olive oil, are all explored to find out what works.

Supplements that can lower, or raise blood pressure -- blood pressure cuff and bottle of pills

I've heard it's best to take fat-soluble supplements, like CoQ10, curcumin, and vitamin D, with fats or oils to increase absorption. Would taking them with a fish oil capsule be enough?

Find out how best to take fat-soluble supplements including CoQ10, curcumin, and vitamins A, D, E, and K, to maximize their absorption.

Is there a lab test that can measure CoQ10 in the blood? Can it help to determine the dosage I should take for a certain condition, like heart failure?

Learn more about blood tests for CoQ10, normal ranges for CoQ10 levels and more.

Blood Test

I'd like to know which supplements may help with my different medical conditions. What's the best way to look this up on ConsumerLab.com?

Learn more about how to use ConsumerLab.com to get the best information regarding supplements and brand testing. Our answer explains.

Is hyaluronic acid helpful for osteoarthritis?

Hyaluronic acid supplement information including joint pain, osteoarthritis, clinical evidence, dosage and more.

Does arnica gel, cream, or spray reduce bruising, pain, or swelling?

Find out if arnica gels, creams, or sprays can reduce bruising, pain, or swelling, help with varicose veins, or muscle pain after exercise. ConsumerLab.com's answer explains.

Arnica Gel and Cream for Bruises and Pain -- tube of arnica cream

Do Sugar Bear Hair Vitamins make hair shine, nails stronger, and help both to grow? They taste good but are super expensive.

Info on Sugar Bear Hair vitamins. Do they make hair shine, nails stronger and help hair and nails grow? ConsumerLab.com's answer explains.

Do Sugar Bear Vitamins Work? -- bottle of Sugar Bear vitamins

Rhodiola and ashwagandha are both promoted to help with stress and anxiety. Is it safe to take them at the same time?

Find out if it is safe to take ashwagandha and rhodiola together. Both herbs are promoted to help with stress and anxiety, but may also lower blood pressure and have other side effects. ConsumerLab.com's answer explains.

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'm over 50 and looking to take a vitamin B-12 supplement. Many contain a form of vitamin B-12 called cyanocobalamin, yet I read on the Internet that this form is toxic. Should I be concerned?

Looking to see if the cyanocobalamin form of vitamin B-12 is safe? Read research and safety information on ConsumerLab's report.

Vitamin B-12

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.

Multivitamins Causing Nausea -- woman with nausea holding multivitamin

I was told I have a MTHFR gene mutation. What do I need to know about taking B vitamins?

MTHFR gene mutation can impact B vitamin bioavailability. Learn more about this and which deficiencies are more likely to occur.

I've been taking a Daily Advantage multi but am now concerned by the very high % DV for vitamin C (833% DV), niacin (325% DV), and B vitamins (over 1,000% DV for several). What do you think?

Learn about the safety of taking multivitamins containing far more than Daily Values, including upper and lower limits for nutrients.

I've read that the best form of vitamin E is d-alpha tocopheryl succinate (it's recommended in the paleo diet, for example), but I don't see that listed on product labels. How can I find it?

Learn more about the different names and types of vitamin E, including d-alpha tocopheryl succinate, natural and synthetic.

Can I just stop taking alpha lipoic acid, or do I need to taper down?

Learn the best way to stop taking alpha lipoic acid supplements.

Is there a multivitamin that contains only the recommended daily vitamins and minerals? Most that I have looked at contain more.

Are there any multivitamins that contain only the recommended daily vitamins and minerals? Choose the best multivitamin based on age & gender.

Multivitamins with 100% Daily Requirements -- magnifying glass held over multivitamin pills

I'm considering taking vitamin K for my bones, but I take blood thinner (anticoagulant) medication. Is there a problem taking both?

Learn more about vitamin K, including info on interactions with blood thinners such as Coumadin and Jantoven, its effects on bones & impact on clotting.

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.

Can Supplements Really Damage Your Kidneys? -- Woman with kidney pain

Do any supplements help treat or reduce the pain of plantar fasciitis (heel pain)?

Plantar fasciitis causing heel pain has, in rare cases, been reported as a symptom of vitamin D deficiency. Other supplements that have been proposed to help include vitamin C, zinc, curcumin (from turmeric), bromelain, collagen and glucosamine. Find out what the evidence shows, and what other treatments may help.

Supplements for Plantar Fasciitis -- Woman With Heel Pain

How does regular black pepper compare with black pepper extract used in supplements? Will sprinkling it on food with turmeric help increase the bioavailability of curcumin compounds from turmeric?

Find out how black pepper extract in supplements compares with regular black pepper added to foods with turmeric.

Is it true that taking turmeric/curcumin with food can reduce iron absorption from food?

Learn more about how to take turmeric/curcumin and if they limit iron absorption from food.
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Recalls & Warnings (48)

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11/05/2021

Herb Recalled Due to Risk of Lead, Cadmium Contamination
9/10/2021

FDA Warns Ten Sellers of "Diabetes" Supplements
5/29/2021

FDA, FTC Warns Five Sellers of "Infertility" Supplements
5/15/2021

Toxic Hand Sanitizer Recalled
9/08/2020

Holistic Healthy Pet Warned for Drug Claims
8/13/2020

FDA Warns Three More Companies Selling Unapproved COVID-19 Tests
8/10/2020

Seller Indicted for Promoting Silver Product as Coronavirus Cure
7/28/2020

Iron Supplements Recalled Due to Undeclared Allergen
1/23/2020

Flaxseed Salmonella Risk Prompts Recall
10/29/2019

Publisher Sued for Promoting "Phony Diabetes Cure"

7/27/2019

Herbal Doctor Remedies Recalls 43 Products
1/20/2019

RXBAR Protein Bars Recalled
10/16/2018

Weight Loss Supplement Containing Hidden Drug Recalled
8/28/2018

FDA Warns Seller of Goldenseal and Parasite Supplements
3/06/2018

Protein Bars Recalled Due to Undeclared Allergens
8/03/2017

AMPT "Sexual Enhancement" Coffee Recalled
7/18/2017

Hidden Drugs Found in Sexual Enhancement Products
5/30/2017

Beef Bone Broths Recalled
4/08/2017

Woman Dies After Receiving Turmeric Infusion
11/29/2016

Bentonite Clay Promoted for "Detoxification" Contaminated With Lead
11/04/2016

Energy Drink Linked to Case of Acute Hepatitis
8/08/2016

Turmeric Spice Recall Expanded to Include More Brands
6/25/2016

Cholesterol-Lowering Supplement Recalled Due To Allergen Risk
6/23/2016

Protein Drinks Recalled Due to Possible Spoilage
6/21/2016

"Doctor Trusted" Seal and Certification Program for Dietary Supplements Misleading and Meaningless, Says FTC
6/02/2016

Clif Bars Recalled Due to Listeria Risk
5/15/2016

Sexual Enhancement Supplements Recalled
5/02/2016

The Republic of Tea Recalls Turmeric/Ginger Teas Due to Salmonella Risk
2/05/2016

Garcinia, Green Coffee Marketers Pay $43 Million to Settle Charges of False Weight Loss Claims
6/26/2015

Seller of CoQ10, Anxiety Supplements and More Warned for Manufacturing Violations, Drug Claims
11/06/2014

Seller of Cholesterol, Arthritis Supplements and More Warned for Drug Claims
11/03/2014

Mixing Medications and Dietary Supplements Can Be Dangerous, FDA Warns
6/25/2014

Red Yeast Rice Product Recalled
5/29/2014

Chia Powders and Smoothies Recalled Due to Salmonella Risk
8/08/2013

Weight Loss Supplement Containing Undeclared Drug Recalled
6/13/2013

Seller of Cardio, Immune, Greens Supplements and More Warned For Drug Claims
3/11/2013

Nutrition Bar Recalled Due To Undeclared Allergen
1/30/2013

Seller of Omega-3 and Emu Oil Supplements Warned For Drug Claims, Misbranding
11/08/2012

FDA Warns Consumers of "Slimming Coffee"
10/15/2012

Recall of Nutrition Bars Containing Peanut Butter Due To Salmonella Risk
5/07/2012

FDA Warns Doctor Promoting Own Supplements Online as Treatments
10/22/2010

Enzyte "Male" Supplement Found to Affect Heart
12/18/2006

Doctor Disciplined for Use of Black Salve Containing Bloodroot
2/15/2006

New Zealand Warns of Liver Toxicity from Black Cohosh

10/06/2005

Deceptive Marketing of “Supreme Greens" -- Settlement with FTC
6/16/2004

Ads for Various Diet Pills and Topical Gels Don’t Cut the Fat, Says the FTC
5/29/2003

Recall and Warning for Another Sexual Enhancement Supplement Illegally Containing Viagra Ingredient
1/15/2002

Recall of "Prostatin" Supplement -- Contains Aristolochic Acid
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Clinical Updates (17)

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8/24/2021

Pfizer Vaccine Approved
Learn about approval of the Pfizer vaccine and find out how approval differs from authorization, who it is approved for, and whether doctors should prescribe it for unapproved uses.
4/17/2016

Vitamin D and Allergy
Vitamin D is known to modulate the immune system. Having sufficient levels is associated with reduced risk of allergy and asthma. A recent study showed that giving vitamin D to pregnant women and their infants resulted in fewer infants being allergic to house dust mites and needing to see a doctor for asthma. For details, see "Allergy," as well as "Asthma," in the What It Does section of the Vitamin D Supplements Review >>
5/22/2018

Hair & Nail Supplements Can Skew Lab Tests
There are reports of high-dose biotin (common in "hair and nail" supplements) causing false readings on blood tests. Be sure to tell your doctor if you're taking high-dose biotin. Get the details in the Biotin section of the B Vitamin Supplements Review.
6/27/2020

Signs of Too Much Vitamin D

Doctors were surprised to discover that symptoms exhibited by a 64-year old woman were due to very high levels of vitamin D from supplements. Learn about the symptoms of too much vitamin D in the Concerns and Cautions section of the Vitamin D Supplements Review. Also see our Top Picks among vitamin D supplements and learn How Much Is Too Much vitamin D.
11/18/2021

Does Melatonin Increase Alzheimer’s Risk?

My doctor said that melatonin may increase the risk of Alzheimer's as some sleeping pills do. Is this true? See the answer in Concerns and Cautions section of the Melatonin Supplements Review.
9/14/2021

Best Way to Store Olive Oil
Even if unopened, it is best to store extra virgin olive oil (EVOO) at the right temperature, according to results of a recent study. Get the details on the best way to store EVOO in our Extra Virgin Olive Oil Review. Also see our Top Picks among extra virgin olive oils.
8/08/2018

Which Curcumin Formulation Is Best?
Curcumin (which comes from turmeric) is not well absorbed unless taken with a fatty (oily) meal, so many formulations have been developed that enhance its absorption. Which of these is best absorbed? Find out in the Which form is best section of the Turmeric and Curcumin Supplements Review. (Also see our Top Picks among tested turmeric and curcumin supplements.)
10/28/2012

Large Study Suggests Best Vitamin D Level
What's the best level of vitamin D in your body for overall health? One way to answer this question is to compare mortality rates (deaths per year) associated different levels of vitamin D. A new study did just this, reviewing information about thousands of Americans. It concluded the best levels are between 20 and 40 ng/mL, as the risk of dying is fairly similar across this range. However, a closer look at the findings suggests an even smaller range actually associated with the lowest mortality. For the details, as well as our suggestions on how to use vitamin D, and quality ratings of products, see the Vitamin D Review.  More >>
5/12/2013

Best Supplements for Vision (Macular Degeneration)
A major new study revealed what combination of supplements is best for slowing progression of macular degeneration -- and which don't seem to help. Get the details, plus quality ratings on over 20 vision supplements in the updated Vision Supplements Review >>
1/05/2019

Is Protein Best Before or After a Meal?
A new study showed that the timing of protein supplementation around a meal can determine the effect on blood sugar in people with insulin resistance. Find out the best timing in the update to the Protein Powders, Drinks, and Shakes Review. (Also see our Top Picks among products.)
10/06/2020

Best Absorbed Form of Fish Oil?
Which form of fish oil is best absorbed? Find out what two recent studies showed in comparing triglyceride, ethyl ester, and monoacylglyceride forms of fish oil in the Forms of Fish Oil section of Fish Oil Supplements Review. Also see our Top Picks for fish oil.
4/27/2021

Best Curcumin Formulation?
Which curcumin formula has the best bioavailability? Learn what a recent study found when comparing the popular formulas C3 Complex, Meriva, NovaSOL and Turmipure Gold. See the Absorption and Bioavailability section of the Turmeric and Curcumin Supplements and Spices Review. Also see our Top Picks among turmeric and curcumin products.
8/10/2021

Best Form of B-12 for Vegans?
What form of vitamin B-12 appeared best at raising B-12 levels among people on plant-based diets in a new study, and how did this compare to getting B-12 from plant-based foods? Find out in the B-12 section of our B Vitamin Supplements Review. Also see our Top Picks for vitamin B-12.
12/03/2021

Best Rapid Home Test for COVID

The FDA has authorized many 15-minute home tests for COVID, but some are better than others at identifying positive samples. See our Top Pick among rapid home tests and how brands compare.

Be aware that these home tests, which can be bought without a prescription, are best used within six days of the start of symptoms. It is likely that they can detect the new Omicron variant. The cost of buying these tests may soon be covered by insurance.

6/07/2017

Spoiled Fish Oil Is Less Effective
Spoiled fish oil does not lower LDL "bad" cholesterol, while the same amount of non-spoiled fish oil does, according to a new study. If you take fish oil to improve your cholesterol levels, it would seem best to use a product that is not spoiled — something ConsumerLab tests for. (It may also be best to choose an oil in the triglyceride form, rather than the ethyl ester form). For details, see the "Quality Concerns" section of the Fish Oil Supplements Review. Also see our Top Picks among fish oils.
11/15/2021

Natural Toothpastes
Are "natural" toothpastes safe and effective? Find out in our updated article about Finding the Best Toothpaste.
12/24/2021

At-Home COVID Testing
Best time to take an at-home COVID test? It may be sooner than you think.
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News Releases (105)

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9/11/2021

Best CoQ10 and Ubiquinol Supplements Identified in Testing by ConsumerLab
8/27/2021

ConsumerLab Tests Reveal Best Joint Health Supplements for People and Pets
7/23/2021

Best Astaxanthin Supplements Identified In Testing by ConsumerLab
4/17/2021

ConsumerLab Identifies Best and Worst Avocado Oils Based on Testing
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
2/23/2021

ConsumerLab Tests Reveal Best Prostate Supplements With Saw Palmetto and Beta-Sitosterol
11/24/2020

Best Zinc for Colds, Immunity, and More. ConsumerLab Selects Top Picks Among Zinc Liquids, Pills and Lozenges
10/21/2020

Best Apple Cider Vinegar? Quality of Bottled Apple Cider Vinegars and Supplements Varies, According to ConsumerLab
6/26/2020

No Garlic in Some Garlic Supplements? -- Best and Worst Garlic Supplements Revealed in Tests by ConsumerLab
6/06/2020

Best Vitamin C Supplements Revealed by ConsumerLab
5/22/2020

Best Alternative Milks? ConsumerLab Tests Reveal What's Really in Plant-Based Milks
4/28/2020

Best and Worst Multivitamins Revealed by ConsumerLab -- Problems Found With 44% of Multis Tested
4/03/2020

Tests of Holy Basil Supplements Show 63% Fail on Quality -- ConsumerLab Tests Reveal the Best and Worst Holy Basil Supplements
3/25/2020

Trouble Sleeping? ConsumerLab Tests Reveal the Best Melatonin Supplements
3/03/2020

Best and Worst Chia Seed Products Revealed by ConsumerLab
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
1/23/2020

We Found the Best Dark Chocolates and Cocoas With the Least Contamination
11/12/2019

Best Magnesium Supplements Revealed by ConsumerLab
10/22/2019

Best Vision Supplements Identified by ConsumerLab
10/04/2019

ConsumerLab Tests Reveal Best Collagen Supplements for Wrinkles and Joints
9/27/2019

Best Turmeric and Curcumin Supplements and Spices Identified by ConsumerLab
8/22/2019

Best Reishi Mushroom Supplements Identified by ConsumerLab
7/31/2019

ConsumerLab Tests Reveal Best CoQ10 and Ubiquinol Supplements
7/10/2019

Best Selenium Supplements Identified by ConsumerLab
6/25/2019

ConsumerLab Tests Reveal Best B Vitamin Supplements -- 19% of B Vitamin Supplements Fail CL's Tests of Quality
5/15/2019

ConsumerLab Tests Reveal Big Differences in Digestive Enzyme Supplements
4/26/2019

Best Cholesterol-Lowering Supplements (Sterols, Stanols & Policosanol) Identified by ConsumerLab
4/25/2019

Best Coconut Water? ConsumerLab Tests Popular Products, Reveals Top Pick
3/11/2019

Best NAC (N-acetyl cysteine) Supplements Identified by ConsumerLab
3/07/2019

Best Coconut and MCT Oils Identified by ConsumerLab
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
1/03/2019

ConsumerLab Tests Reveal the Best Protein Powders, Shakes and Drinks -- 20% of Protein Powders and Drinks Fail CL's Tests of Quality
12/12/2018

Best Taurine Supplements for People and Pets Identified by ConsumerLab
11/19/2018

Tests Reveal Best Fish Oil Supplements and How They Compare to Prescription Fish Oil
10/26/2018

Best Vitamin A Supplements, Including Cod Liver Oils, Identified by ConsumerLab
10/02/2018

Best Joint Health Supplements Identified -- ConsumerLab Tests Glucosamine, Chondroitin, MSM and Boswellia Supplements for People and Pets
7/31/2018

Best L-Tryptophan and 5-HTP Supplements Identified by ConsumerLab -- ConsumerLab Tests Strength and Purity of Supplements for Sleep and Mood
7/10/2018

Best Chromium Supplements Identified by ConsumerLab
5/31/2018

ConsumerLab Identifies the Best Valerian Supplements -- Strength, Quality and Cost Vary Widely Among Popular Brands
5/02/2018

Best Probiotic Supplements and Kombuchas? -- ConsumerLab Tests 41 Popular Products, Reveals Problems and Top Picks
3/07/2018

Finding Real Ginkgo Isn't Easy, ConsumerLab's Tests Reveal
2/25/2018

Top-rated Vitamin and Supplement Brands and Merchants for 2018 Based on Consumer Satisfaction
1/21/2018

Best Apple Cider Vinegar? Beware of Poison! -- ConsumerLab.com Tests Reveal the Best and Worst Apple Cider Vinegars and Pills and Why Some Could Be Dangerous
1/04/2018

ConsumerLab.com Reveals Its Top Picks for Best Iron Supplements
12/12/2017

Berberine and Goldenseal: Avoid Fakes! -- ConsumerLab.com Testing Reveals the Best and Worst Supplements
10/19/2017

ConsumerLab.com Reveals Best Zinc Lozenges and Supplements for Shortening Colds and Correcting Deficiency
9/26/2017

ConsumerLab.com Explains How to Take Melatonin and Reveals Its Top Supplement Picks
8/23/2017

ConsumerLab.com Tests Reveal Best Low-Dose Lithium Supplements for "Mood"
6/21/2017

Which Magnesium Is Best? ConsumerLab.com Tests Popular Brands and Reveals Its Top Pick
6/01/2017

Best Vitamin K Supplement? ConsumerLab.com Tests Popular Products and Reveals Its Top Picks
5/26/2017

ConsumerLab.com Tests Reveal the Best Calcium Supplements
5/17/2017

Best Vitamin D? ConsumerLab.com Tests Popular Vitamin D Supplements and Reveals Its Top Picks
4/04/2017

ConsumerLab.com Reveals Best and Worst Turmeric and Curcumin Supplements & Spices -- 31% Fail ConsumerLab.com Tests of Quality
2/25/2017

Top-rated Vitamin and Supplement Brands and Merchants for 2017 Based on Consumer Satisfaction
2/23/2017

ConsumerLab.com Reveals Best and Worst B Vitamin Supplements and Why Current Labels Often Mislead
1/10/2017

Your Extra Virgin Olive Oil May Not Be, According to Review By ConsumerLab.com -- Top Picks Noted for Best Quality and Value
12/21/2016

Best CoQ10? ConsumerLab.com Tests Popular CoQ10 and Ubiquinol Supplements and Reveals Its Top Picks
12/06/2016

Which Brands of Alpha Lipoic Acid are Best? -- ConsumerLab.com Tests Lipoic Acid Supplements for Quality, Identifying Top Picks
10/11/2016

What Are the Benefits of Resveratrol and Which Brands Are Best? -- ConsumerLab.com Reviews the Evidence and Tests the Quality of Popular Resveratrol Supplements
9/13/2016

Best Fish Oil? ConsumerLab.com Tests 44 Popular Omega-3 Supplements and Identifies Its Top Picks
7/29/2016

ConsumerLab.com Discovers Problems with Most Multivitamins for Dogs and Cats
7/05/2016

80% of Milk Thistle Supplements Fail ConsumerLab.com Tests of Quality -- Most Found to Be Low in Key Component
6/03/2016

What Works for Joint Health? ConsumerLab.com Reviews Glucosamine, Chondroitin, MSM and Boswellia Supplements for People and Pets
3/22/2016

Rhodiola: Does It Help With Depression and Anxiety and Which Brands Are Best? -- ConsumerLab.com Reviews the Evidence and Tests the Quality of Popular R. Rosea Supplements --
3/01/2016

Does Echinacea Really Help With Colds and Which Brands Are Best?
2/25/2016

Top-rated Vitamin and Supplement Brands and Merchants for 2016 Based on Consumer Satisfaction
2/09/2016

Lysine: Does It Work for Cold Sores and Which Brands Are Best? -- ConsumerLab.com Reviews the Evidence and Tests Supplements Often Used to Prevent Herpes Eruptions
1/19/2016

SAM-e Supplements Providing Best Quality and Value Identified by ConsumerLab.com
1/05/2016

Cinnamon Spices and Supplements Found to Vary Widely in Levels of Potentially Helpful and Harmful Compounds Reports ConsumerLab.com
12/17/2015

ConsumerLab.com Focuses on Vision Supplements, Spotting the Best and the Worst
6/10/2015

ConsumerLab.com Tests Reveal Best and Worst Magnesium Supplements
5/05/2015

ConsumerLab.com's Tests of Digestive Enzyme Supplements Reveal What Labels Don't
3/17/2015

CoQ10 & Ubiquinol Supplements Vary in Quality, as Well as Dose, Absorption, and Price According to ConsumerLab.com
3/05/2015

ConsumerLab.com Shows Chinese Consumers What's Really in Foods and Supplements -- U.S. Testing Company Expands to China, Launches cn.ConsumerLab.com
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
1/20/2015

ConsumerLab.com Identifies Best Vitamin A Supplements, But Cautions That Most People Don't Need Them
12/10/2014

ConsumerLab.com Identifies Best Zinc Products for Colds, Eyes, and Zinc Deficiency -- Popular Zinc Supplements and Lozenges Tested and Compared
8/20/2014

Some Red Yeast Rice Supplements Up to 500X Stronger Than Others -- Popular Cholesterol-Lowering Supplements Tested and Compared
7/22/2014

Which Supplements Help Lower Cholesterol? ConsumerLab.com Identifies Best Products by Reviewing Evidence and Testing Quality
7/07/2014

Which Weight Loss Supplements Are Best? ConsumerLab.com Reviews the Evidence and Tests the Quality of Popular Products
2/26/2014

Mislabeling of Some Joint Health Supplements with Glucosamine, Chondroitin, Boswellia, and MSM According to ConsumerLab.com -- 38 Supplements Tested, Including Products for Dogs and Cats --
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
12/16/2013

What's Really in Turmeric Supplements and Spices? You May Not Want to Know -- 33% of Turmeric/Curcumin Supplements Fail ConsumerLab.com's Review; Filth Found in Spices
3/05/2013

CoQ10 & Ubiquinol Supplements Should Be Chosen Carefully, Cautions ConsumerLab.com -- Less Than 4% of Listed Ingredient Found in Widely-Sold Product
2/01/2013

Top-rated Vitamin and Supplement Brands and Merchants for 2013 Based on Consumer Satisfaction
10/04/2012

Five Years After ConsumerLab.com Reported a Problem, FDA Agrees Generic Version of Wellbutrin XL Is Not Equivalent and Is Pulled Off Market — Important Lessons about Generics
8/22/2012

Contamination and Other Problems Found in Fish Oil Supplements -- Large Review by ConsumerLab.com Reveals Excessive PCBs or Mislabeling in Over 30% of Omega-3 Supplements
5/30/2012

ConsumerLab.com Identifies Best and Worst Magnesium Supplements Based on Tests and Comparisons
5/08/2012

Lead Contamination and Mislabeling in Joint Health Supplements with Glucosamine, Chondroitin, and MSM According to ConsumerLab.com
4/26/2012

ConsumerLab.com reviews prostate supplements with saw palmetto and/or beta-sitosterol and finds few likely to be effective
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
10/13/2011

30% of SAM-e supplements selected for review fail to pass ConsumerLab.com testing -- Cost of SAM-e found to vary 5-fold
5/23/2011

Red yeast rice supplements weaker now than in 2008; Wide variation among brands and contamination discovered by ConsumerLab.com -- Popular cholesterol-lowering supplements tested and compared
2/16/2011

Some turmeric and curcumin supplements fail quality review -- ConsumerLab.com finds 20% of turmeric supplements selected for review deliver less than 15% of promised compounds
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
10/07/2009

ConsumerLab.com finds that only two-thirds of alpha-lipoic acid supplements selected for testing pass quality review -- Anti-oxidant supplements helpful to diabetics
5/19/2009

Review of Magnesium Supplements by ConsumerLab.com Shows One-Quarter Fail Quality Tests
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.
10/30/2007

Recently tested magnesium supplements free of lead, but one product missing most of its ingredient according to ConsumerLab.com — First Major Product Review of Potential "Life-Extending" Ingredient
4/11/2007

Many arthritis supplements lack key listed ingredient — ConsumerLab.com finds chondroitin missing or low in eight supplements; Glucosamine and MSM also tested
10/20/2006

ConsumerLab.com report on CoQ10 supplements finds quality high but large range in suggested dosage
3/13/2006

ConsumerLab.com reports on supplements for bone health containing calcium and vitamin D— Results posted for 32 supplements for adults and children; One found contaminated with lead
2/06/2006

ConsumerLab.com finds most prostate supplements have correct ingredients, but three fail testing — Results posted for 22 supplements containing saw palmetto and beta-sitosterol
1/13/2004

ConsumerLab.com finds discrepancies in strength of CoQ10 supplements — Increasingly popular supplement, but health professionals and consumers cautioned to check brands
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