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Product Reviews (59)
Fish Oil and Omega-3 and -7 Supplements Review (Including Krill, Algae, Calamari, and Sea Buckthorn)
Black Currant Oil, Borage Oil, Evening Primrose Oil, Flaxseed Oil, and Hemp Oil Supplements Review: Sources of ALA and GLA (Omega-3 and -6 Fatty Acids)
CL Answers (128)
Which "whole food" multivitamins don't include synthetic vitamins? How about Complete Foods, Sunwarrior, Garden of Life, Nature's Brands, and Doctors' Research?
Is it better to get vitamins from foods or supplements, and are natural vitamins better than synthetic vitamins?
Are there vitamins or supplements that can reduce my risk of breast cancer? Do any increase cancer risk?
Is it safer to get calcium from foods than from supplements? How about from calcium-fortified orange juice and non-dairy milks?
Which oils can help lower my cholesterol and risk of heart attack? How are coconut oil, olive oil, and fish oil for example?
Can prenatal vitamins have too much folic acid? Mine has 800 mcg, but isn't that more than what's recommended? Is this dangerous to me or my baby?
Do any supplements help with the coronavirus (COVID-19)? Do supplements like zinc, vitamin C, or herbals work?
How can the Recommended Daily Allowance (RDA) for magnesium be higher than the Upper Tolerable Intake Level (UL)? That is, how can an amount which is healthful also put you at risk for harm?
Can taking fish oil or calcium supplements increase my risk of prostate cancer? My doctor recommended that I stop taking them since I have an enlarged prostate.
I have been having neurological symptoms. My blood test showed a toxic level of vitamin B-6. My multivitamin contains 75 mg of B-6 -- below the upper limit of 100 mg. Is the label wrong?
I've heard that soaking dried beans for 24 hours reduces the phytate level, allowing for greater access to nutrients. Is this true?
Someone told me that one Brazil nut can provide your entire recommended daily intake for vitamin E. Is that true?
I've heard that curcumin is a MAO inhibitor. Is this true, and does that mean it is not safe to take if you eat amine-rich foods like cheese and dark chocolate?
I'm thinking of changing my multivitamin, but the one I'm considering doesn't contain molybdenum. Most others have it. How important is molybdenum?
I noticed that some ingredients in my multivitamin have no daily value established, such as Boron (150 mcg per tablet), Nickel (5 mcg), and Tin (10 mcg). Should I be concerned about these?
Does taking one slow-release calcium tablet of 600 mg (such as Citracal) per day pose a risk for heart disease?
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?
Should I be worried that my supplement contains "caramel coloring IV"? I've heard that it has been linked to cancer.
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.
Is it true that calcium interferes with iron absorption? Is it a problem to take a multivitamin containing both minerals?
I started taking a magnesium supplement (400 mg from magnesium oxide) and developed diarrhea. Might there a problem with the supplement?
Is it true that taking calcium supplements increases the risk of developing age-related macular degeneration (AMD)?
What is Metafolin (5-methylfolate)? I see it in some supplements instead of folic acid. Is it better than folic acid?
Is quercetin helpful for a specific condition? I see it as an ingredient in several different types of supplements.
I take estrogen replacement (Vagifem), to help relieve the symptoms of menopause. Are there supplements I should avoid, or be taking, due to this drug?
Is it okay to crush a tablet and consume the powder or add the powder to food, rather than swallowing the tablet whole?
How should curcumin dose be adjusted if using formulations with enhanced bioavailability such as Meriva, BCM-95, CurcuWin, Theracurmin, Bioperine, and C3?
Is it true that there are bits of plastic in drinking water and specialty salts? How concerned should I be?
What are the health benefits of avocado oil? Is it healthier than olive oil? Which avocado oils are best?
How do the Beyond Burger, the Impossible Burger, and a beef burger compare in terms of vitamins and minerals, and which is best?
I bought a lactose-free milk that is "calcium-fortified" and provides 50% of the Daily Value for calcium. Is that too much calcium?
I'm worried that I'm not getting enough potassium, but potassium supplements only provide a small dose -- much less than the daily requirement. Why is this, and how can increase my daily intake?
The maker of my multivitamin says it doesn't include folic acid because too much from supplements can be harmful. Is that true?
I take warfarin (Coumadin), an anticoagulant drug. Are there supplements I should avoid, or be taking, due to this drug?
Which supplements are important after bariatric surgery (i.e., weight loss or stomach-reducing surgery)? Are there any I should avoid?
I'm interested in using Himalayan salt. What are the health benefits with it and other specialty salts? Are there contaminants in these salts?
Must I take amino acid supplements on an empty stomach? Can I take them with other amino acids or with food to help with swallowing capsules?
Is there a danger in taking lecithin or phosphatidylcholine? I heard that they may increase the risk of heart attacks.
Is it better to use a powdered product that you mix with liquid than to take a pill. I was told that the vitamins will be more completely absorbed. Is that true?
Can taking too much vitamin B-6 be dangerous? The label on my multivitamin states it contains 2000% of the Daily Value!
I take a number of supplements and I think they are making my acid reflux worse. Which supplements could be causing my stomach irritation, and what can I do about it?
What are the health benefits of coconut oil and medium chain triglycerides, such as those used in Bulletproof Coffee?
Can I use a home test for mercury to check for mercury in fish, like canned tuna, fresh fish, and sushi?
I recently read that a gluten-free diet may increase your exposure to arsenic and mercury. Is this true?
Do Sugar Bear Hair Vitamins make hair shine, nails stronger, and help both to grow? They taste good but are super expensive.
I have type 2 diabetes. Should I be concerned about ingredients like maltodextrin and maltitol that are found in some protein bars and drinks?
I take levothyroxine (Synthroid), a thyroid hormone to treat hypothyroidism. Are there supplements I should avoid, or be taking, due to this drug?
Which supplements are helpful to have when traveling? Any tips on how to best store supplements on trips?
I read that famotidine (Pepcid) may help treat COVID-19. Is this true? Are there risks with taking famotidine?
Recalls & Warnings (75)
Recall of Calcium & Magnesium Softgels Containing Excessive and Potentially Toxic Amounts of Vitamin D
Maker of Greens and Whole Foods Supplements Warned For Drug Claims, Manufacturing Violations
Hill's Science Diet, Prescription Diet Dog Food Recalled Due to Risk of Vitamin D Toxicity
Weight Loss and Cleanse Supplements Contain Adulterated and Improperly Labeled Ingredients, FDA Warns
FDA Warns Seller of Milk Thistle, Chromium, Joint Supplements & More for Manufacturing Violations
Performance Enhancing Ingredient, DMAA, Not Really from Geraniums, Putting Its Use in Supplements in Doubt
Maker of Cardio, Arthritis, Cleanse Supplements and More Warned For Manufacturing Violations and Drug Claims
Adverse Event Reports Associated With Dietary Supplements Increase, But Remain Underreported And Underutilized
Seller of Omega-3, Probiotics & SuperFoods Warned for Manufacturing Violations, Drug Claims
Clinical Updates (30)
Probiotic Foods and Social Anxiety
How To Get Vitamin K From Food
Spirulina Lowers Cholesterol
Chlorella Lowers Cholesterol and Triglycerides
Lower Risk of Heart Disease with Fermented Dairy Foods
Can Yogurt Reduce Diabetes Risk?
Foods That May Help Sleep
Lower Risk of Dementia Through Foods
Don't Take Green Tea With Iron?
Vitamin C and Breast Cancer
Anti-Inflammatory Effect of Juice Plus+?
Niacin & Skin Cancer
Food vs. Supplements for Getting Vitamins & Minerals
Prebiotics for Appetite Control?
Tea & Iron Absorption
Fruit for the Eyes
Extra Protein Improves Strength
Omega-3s Linked to Less Heart Disease and Longer Life
Toxin in Algae Supplements
Choline Missing From Prenatals
Fish Oil Heart Claim
Yogurt & High Blood Pressure
Concern With a Colorant
Glyphosate in Cheerios
Yogurt and Colorectal Cancer
Gastrointestinal Side-Effects of Chlorella
Does Taking Vitamin D Reduce the Risk of Heart Disease?
B-12 Deficiency and Acid Inhibitors
Other supplements which should or should not be used with these medications are discussed in the Proton Pump Inhibitors article, which is part of the extensive Drug Interactions section of our website (where you can look up interactions for other drugs you may be taking.)