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Product Reviews (20)
CL Answers (89)
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.
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).
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
What is benfotiamine and can it really improve or prevent complications from diabetes?
Can benfotiamine really improve or prevent complications from diabetes? Learn more.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Does Longevinex resveratrol really help for age-related macular degeneration?
Longevinex resveratrol information including how it helps age-related macular degeneration & clinical evidence.
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.
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.
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.
Which supplements are best for seasonal allergies?
Find out which supplements are best for allergies and can help reduce seasonal allergy symptoms, including bromelain, curcumin, vitamin D, and CLA.
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.
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.
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.
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.
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.
How can I get tested for the coronavirus? Can I get an at-home test for COVID-19? Which are the best tests? Are any tests free?
Coronavirus (COVID-19) Tests: Where to get COVID-19 tests, including information about free testing, home testing and more. Information about SARS-CoV-2 virus tests, antibody tests and FDA approved tests.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.