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How do the Pfizer, Moderna and Johnson & Johnson COVID-19 vaccines compare in terms of efficacy, safety and side effects? How, when and where do I get the COVID-19 vaccine?
Find out how the COVID-19 vaccines from Pfizer and Moderna compare and learn how when and where you can get the COVID-19 vaccine.See Article
Product Reviews (24)
CL Answers (32)
What is the difference between the RDA and the DV for vitamins and minerals?
Find out the difference between RDAs (Recommended Daily Allowances) and DVs (Daily Values) for vitamins and minerals, as well as new changes to Daily Values. ConsumerLab.com's answer explains.
Is Super Beta Prostate better than other prostate supplements?
Find out if Super Beta Prostate is effective, including clinical evidence and price.
Is CBD oil (cannabidiol) effective and safe? Is it legal?
Learn more about cannabidiol (CBD), its potential effects, safety and side effects, and find out if CBD oils and pill are legal. ConsumerLab.com's answer explains.
Which is the best mask to prevent COVID-19 and how do cloth, disposable, N95, and KN95 masks compare? How can I stop glasses from fogging?
See our Top Picks for masks. Learn how to make COVID-19 masks from materials at home that can be almost as effective as surgical mask and N-95 masks.
Do any supplements help with the coronavirus (COVID-19)? Do supplements like vitamin D, zinc, vitamin C, or herbals work?
Find out if natural remedies & supplements for coronavirus such as zinc, vitamin C, garlic, or elderberry help to prevent or treat COVID-19.
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.
Does heat kill coronavirus (COVID-19)? Can it disinfect face masks and packages?
Find out if heat kills the coronavirus SARS-CoV-2 that causes COVID-19 infection. Learn what temperature kills the coronavirus and more. ConsumerLab explains.
Do brain games and apps really work and improve memory?
Find out if brain training games & apps, like Lumosity & BrainHQ, really work to train the mind and improve memory. ConsumerLab.com's answer explains.
How are you staying healthy during the coronavirus pandemic?
Tips for staying healthy during the coronavirus (COVID-19) pandemic. Tips from ConsumerLab members for maintaining physical health, mental health and social well-being during COVID-19.
Are the "% DV" numbers on vitamin supplement labels really based on what I need?
Learn more about percent daily values, including if they are good standards of measure or if better upper and lower limits exist.
Which are the best non-prescription hearing aids? Are any of these low-cost devices as good as more expensive, prescription hearing aids?
Non-prescription hearing aid reviews, including MD Hearing Aid, Eargo Hearing Aid, Liberty Hearing Aid, etc. Compare quality & cost with prescription hearing aids.
Can supplements help me lose weight?
Learn more about weight loss supplements, including our lab test results and product comparisons.
I read that turmeric may be a GI irritant. I have GI problems and wonder if I should avoid turmeric and curcumin?
Find out if turmeric/curcumin supplements can cause gastrointestinal irritability.
How does the new prescription fish oil Epanova compare to Lovaza --and fish oil supplements?
Learn more about prescription fish oils like Epanova, Lovaza, and Vascepa and how they compare to each other and to supplements.
Is canola oil good or bad for you? I heard it can be toxic.
Find out if canola oil is bad for you or good for you, and whether it helps heart health. Clinical evidence and how it compares to other oils.
Do water filters remove microplastics from tap water?
Find out if water filter pitchers and faucet mounted filters from Brita, Pur, Lifestraw and other brands remove microplastics from tap water.
I read that famotidine (Pepcid) may help treat COVID-19. Is this true? Might a proton pump inhibitor, like Prilosec, help?
Pepcid (famotidine) was reported to improve outcomes in people with COVID-19 in China. But is there evidence that Pepcid really helps to treat COVID-19?
Is it safe to take Bioperine (which contains piperine from black pepper)?
Bioperine info including if it is safe to take, which medications it may interact with & potential side effects. ConsumerLab.com's answer explains.
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.
How much calcium do you need each day, what forms are best, and how much is too much?
Learn about the recommended daily intake of calcium from food & supplements and why taking too much can be harmful. Also, learn about the forms of calcium that are available and which are best.
Does Prevagen really improve memory?
Learn more about Prevagen, including clinical studies on Prevagen's impact on memory & cognition, safety, pricing, and an FDA warning letter. ConsumerLab explores the efficacy of Prevagen.
What are the health benefits of manuka honey, and is it safe?
Manuka honey health benefits, how it differs from common, store-bought honey, safety, evidence for using manuka honey for wounds, sore throat and cough, constipation and more.
What is PQQ? Does it help with aging and memory? Is it similar to CoQ10?
PQQ information (pyrroloquinoline quinone), including evidence from studies on fatigue & tiredness, mood, memory, cognition, and inflammation.
What does "Contains a Bioengineered Food Ingredient" mean on the label of a supplement or food? Should I be concerned?
Learn about bioengineered ingredients in foods and dietary supplements, where to find a list of bioengineered foods and what to look for on labels, as well as where you can find information about bioengineered ingredients in dietary supplements in ConsumerLab's product reviews.
How Should You Take Care of Yourself After You’ve Had COVID-19?
Find out the best way to care for yourself when recovering from COVID-19, including how long you should quarantine, whether you should get vaccinated, when it is safe to undergo a surgery, and how to spot and, possibly, improve lingering symptoms.
Is there a danger in taking lecithin or phosphatidylcholine? I heard that they may increase the risk of heart attacks.
Lecithin, phosphatidylcholine and choline - Learn more about the potential link between them and cardiovascular disease.
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.
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.
Is it true that oat cereals, like Cheerios, oatmeal, oatflakes and steel-cut oats can be contaminated with a toxin?
Find out if oat cereals, like Cheerios and oatmeal, can be contaminated with the fungal toxin ochratoxin A (OTA). ConsumerLab.com's answer explains.
Which dietary supplements and health foods contain high levels of lead?
Information about lead and heavy metals in vitamins, supplements and foods. Information on the adverse effects of lead.
Is echium oil a good alternative to fish oil? I am allergic to fish.
Echium oil as an alternative to fish oil. Learn more for those with fish allergies, including information on omega-3 fatty acids.
Which supplements are helpful to have when traveling? Any tips on how to best store supplements on trips?
Find out which vitamins & supplements can be helpful when traveling, including melatonin, ginger, and more, and find out how you can carry them with you.
Recalls & Warnings (114)
Prescription and Street Drug Alternatives Found in Male Enhancement, Mood, and Sleep Supplements
Prescription and Street Drug Alternatives Found in Male Enhancement, Mood, and Sleep Supplements
Federal Court Shuts Down Three Supplement Companies With Serious Manufacturing Violations
Synthetic Amphetamine, Less Protein and More Sugar Than Claimed Found in Workout Supplements
Problems Found with New Zealand Fish Oil Supplements, Concerns Raised About Testing Methods
Performance Enhancing Ingredient, DMAA, Not Really from Geraniums, Putting Its Use in Supplements in Doubt
Maker of Weight-Loss and Cellulite Treatment Ordered to Stop False Claims and Pay Consumer Redress
U.S. Seizes Supplement Illegally Marketed for Virus and Cold Use; FDA Steps Up Activity Against Supplements with False Claims
Clinical Updates (376)
A More Effective Way to Take Sterols/Stanols to Lower Cholesterol?
New Probiotic Study
New Curcumin Increases Bioavailability
Magnesium for Optimal Vitamin D Level
High EPA Fish Oil Lowers Cardiovascular Risk for Some
How Long Does Coronavirus Last On Surfaces?
Food vs. Supplements for Getting Vitamins & Minerals
New Potassium Recommendations
New Vaccine Recommendations for Women Who are Pregnant or Breastfeeding
Saw Palmetto May Not Work
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 >>
Do Vitamin Patches Work?
Benefit from Booster?
Reducing Virus Indoors
Declining Vaccine Protection
Does CoQ10 Help the Heart?
Glucosamine May Increase Eye Pressure
Red Yeast Rice with Sterols?
Optimum Level of Vitamin D
Creatine for Fibromyalgia
Best Supplements for Vision (Macular Degeneration)
Extra Protein Improves Strength
Vitamin D and Diabetes Risk
Chondroitin Improves Hand Arthritis
Green Tea Extract and Weight Loss
Suicide and Omega-3
DHA in Pregnancy
Vitamin D and Bladder Cancer
Additional Nutrients For the Brain
Fish Oil's Impact on Cognitive Decline
Fish Oil and Stress
Vitamin C: Does It Fight Colds?
Vitamin D to Prevent Menstrual Pain
CLA For Weight Management
Curcumin and Cancer
Can Echinacea Prevent Colds?
Does Ginkgo Improve Memory?
Is Vitamin D2 or D3 Better?
Vitamin D Prevents Hip Fracture
Feeling fatigued? Iron may help
B Vitamin May Lower Blood Pressure
Fish Oil Tested for Multiple Sclerosis
Fish Oil No Help for Heart Disease?
Vitamin D for Infants
Magnesium and Bone Health
Vitamin D & Pneumonia
Does Ginkgo Cause Cancer?
Concern Over Carnitine Causing Cardiovascular Disease
For more details, see the updated reviews of B Vitamin Supplements & Energy Drinks and Protein Powders, as some of these products contain L-carnitine. The Acetyl-L-Carnitine Supplements review has also been updated because acetyl-L-carnitine is chemically similar to L-carnitine, suggesting a potential concern.
More Iron, Less PMS?
Low Dose of Vitamin K Helps Bone
What You Need to Know About Fish Oil
Autism and Folic Acid Supplements
More Probiotic Concerns
Vitamin D and Breast Cancer Survival
More Evidence of What Multivitamins Don't Do
Liver Toxicity with Supplements, Including Green Tea
Fish Oil / Alpha-Lipoic Acid for Alzheimer's
Green Tea to Treat Fibroids
When Vitamin D Doesn't Help
Probiotic Helps Prevent Recurrence of Diverticular Disease
Probiotics for Oral Health?
Lower Vitamin D in Blacks May Be Sufficient
Does folic acid affect the risk of colon cancer?
Low Vitamin D Levels and Obesity -- A Dangerous Combination
Can Resveratrol Help Control Blood Sugar?
Antacids and Magnesium -- Be Careful!
Insulin Sensitivity and Magnesium
Does Echinacea Help Treat a Cold?
Resveratrol May Blunt Positive Effects of Exercise
Probiotic Significantly Reduces Antibiotic-Associated Diarrhea
Green Tea "Blocks" Beta-Blocker
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.
Danger Using Antidepressant with Garcinia cambogia
Resveratrol for Memory?
Cocoa May Worsen Acne
Does Green Tea Really Help With Weight?
Too Much Calcium for Some?
Curcumin Reduces Soreness After Exercise
Dark Chocolate Improves Walking in Peripheral Artery Disease
Probiotics Lower Blood Pressure
Curcumin for Major Depression
Up To a Point, Alzheimer's Risk Falls with Vitamin D
Taking Fish Oil with Sterols
Black Cohosh Improves Menopause Symptoms and Decreases Fibroid Size
Resveratrol Blunts Benefits of Exercise
Ginseng for Lower Blood Sugar
Turmeric for Memory
Prebiotic for Reducing Anxiety?
Vitamin D and Colorectal Cancer
Fewer Heart Disease Deaths Among Multivitamin Users
Vitamin D Helps in Pregnancy
Green Lipped Mussel Oil Reduces Pain and Inflammation After Exercise
Caution with St. John's Wort
Take Vitamin D with a Meal Containing Fats
Iron After Blood Donation
Alpha Lipoic Acid Improves Results When Dieting
Selenium and Prostate Cancer
Vitamin D and Statin-Related Muscle Pain
Green Tea Extract and Prostate Cancer
Lutein and Visual Processing
Probiotic Foods and Social Anxiety
How Vitamin B-12 Causes Acne
Probiotics May Not Work As Thought
Vitamin D and Inflammation
Soy Isoflavones Maintain Bone Calcium
Calcium Supplements Increase Kidney Stone Growth
Curcumin for Knee Osteoarthritis
CoQ10 Improves Symptoms in War Veterans
Probiotic Shortens Respiratory Infections
Cocoa Flavanol Safety
Probiotic for Fat Loss
Fish Oil & Antidepressants
Probiotics Reduce Diarrhea from Anitibiotics
Magnesium and Heart Disease
Vitamin D & Asthma
Omega-3s Drop in Farmed Salmon
Too Much Folate & Nerve Damage
Whey Protein for Blood Sugar Control?
Vitamin D & Calcium for Diabetes Due to Pregnancy
Magnesium Improves Women's Physical Performance
Treating ADHD with Omega-3s?
Fish Intake and Breast Cancer Risk
Niacin Helps Prevent Skin Cancers
B Vitamins & Autism Risk
Magnesium Lowers Blood Pressure
Vitamin C and Breast Cancer
Cocoa Lowers Blood Sugar
Cocoa for High Blood Pressure?
Ashwagandha for Knee Osteoarthritis
Vitamin D and Autism Risk
Potential Risk with High B-12
Better Executive Functioning with Vitamin D
When Does Fish Oil Help the Heart?
Tea Drinking Associated with Less Cognitive Decline
Right Dose of Vitamin D to Reduce Falls
DHA for Rheumatoid Arthritis?
Vitamin D and Cancer
Olive Oil Helps in Pre-Diabetes
Vitamin C for Colds?
How Important Is Vitamin D for Bones?
Probiotic Helps a Little with Allergy
Probiotic Not Always Useful in Infant Colic
Vitamin D Deficiency May Predict Advanced Prostate Cancer
Lycopene May Improve Fertility
B Vitamins & Breast Cancer
Caution With Antioxidants
Soy Isoflavones & Breast Cancer Risk
Probiotics a Waste of Money?
Red Yeast Rice Better Than Statin?
Risk from Reusing Plastic Water Bottles
Fish Oil & Colon Cancer
Green Tea and Blood Sugar
Does Magnesium Reduce Exercise Soreness?
Omega-3s & Healthy Aging
Probiotic Lowers Eczema Risk in Children
When to Take Protein
Vitamin D for Breast Cancer?
Extra Virgin Olive Oil and Fatty Liver Disease
Collagen Peptides vs. Gelatin
Ashwagandha for Insomnia?
CoQ10 for Statin-Intolerance
Colloidal Silver Concern
Best Way to Take CBD
Adding Fish Oil to Statins?
Resveratrol for Memory?
A Food to Slow Cognitive Decline?
Also see our Top Picks for canned tuna and salmon.
Curcumin, Insulin & Alzheimer's?
"Whole Grain" Is Not Enough
Factors For Lower Risk of Dementia
Getting the Most from Green Tea
Milk Thistle for Menopause?
Eggshell Membrane + Fish Oil for Joint Pain?
Surprising Role of Potassium in COVID-19
B-12 Supplements vs. Injections
How Much Vitamin D from Sunshine?
Coconut Oil Impact on Cholesterol
Best Way to Cook With Olive Oil
Melatonin and Cataracts
A Role for Vitamin K in COVID-19?
Concern Over Memory Supplement Quality
Green Tea for Lowering Blood Pressure
Lunasin to Lower Cholesterol?
Glucosamine & Eye Pressure
Vitamin D for Diabetes Prevention
Glyphosate in Cheerios
Tart Cherry for Soreness After Exercise?
Vitamin D Sweet Spot
Olive Oil Lowers Diabetes Risk
Glucosamine for Hand Osteoarthritis?
Best Supplement for Depression
Ginger for Migraine?
Lead in Turmeric
L-Theanine for Sleep and Cognition?
Pycnogenol for Raynaud's?
Magnesium for Memory
Reducing Asthma Risk in Children With Fish Oil
Ashwagandha for Stress and Anxiety
Microplastics in Tea
A Better Form of Creatine?
Fish Oil for Diabetes?
Breast Cancer & Milk Consumption
How Hot Should Green Tea Be?
Do We Really Need More Lithium?
Ashwagandha for Schizophrenia
Red Yeast Rice and Diet
Also, be aware that red yeast rice may aggravate symptoms of a neurological disorder, as described in a recent case report noted in the Concerns and Cautions section of the Red Yeast Rice Review.
High-Dose Vitamin D Risk
Vitamin D and Cognition
Comparing Beetroot Juices, Concentrates, and Powders
Vitamin D for Hives
Can Garlic Slow Atherosclerosis?
High Blood Pressure Risk With Too Much Folic Acid During Pregnancy
Also see our Top Pick among prenatal vitamins, which provides adequate (but not too much) folic acid, in our Multivitamin and Multiminerals Supplements Review.
Extra Protein Enhances Training
Is Protein Best Before or After a Meal?
Collagen for Wrinkles?
Coconut Oil for Lowering Weight and Cholesterol?
Vitamin D Deficiency & COVID Death Risk
Whey Protein When Bedridden?
Energy Drinks & Aggression
Fish Oil Heart Claim
DHA for Periodontitis (Inflammation Around Teeth)
Stanols Lower Cholesterol
Chocolate May Help Exercise
Vitamin D for Asthma
Calcium Supplements & Risk of Dementia
Vitamin D, Blood Sugar & Insulin Resistance
How Much Do Oats Lower Cholesterol?
Lutein for Stress?
Probiotic Reduces Diabetes Risk In Pregnancy
Chocolate May Reduce Diabetes Risk
Vitamin D2 or D3?
How Vitamin B6 May Backfire
Fish Oil for Endurance
High-Dose B Vitamins & Cataract Risk
Does Lithium Prevent Dementia?
Ashwagandha & Thyroid Function
Changed VSL#3 Probiotic?
Denture Adhesive Concern
Powerful Combination for Alzheimer's
Vitamin D and Reducing Injuries From Falls
Timing Probiotics with Antibiotics Is Key
Cereal Fiber Reduces Risk of Death from Colorectal Cancer
Dark Chocolate for Memory
Melatonin Improves Sleep in Children with Autism
Autism Risk With Low Vitamin D
Citrulline for Improving Exercise?
Tea & Iron Absorption
Lutein and Zeaxanthin Improve Memory
Curcumin for Depression
CoQ10 for Nerve Pain
Apple Cider Vinegar for Decreasing Appetite & Weight
Collagen for Ankle Pain and Sprains?
Curcumin for Depression & Anxiety
Taking Curcumin With an NSAID?
Curcumin for Muscle Soreness?
Stroke Risk with Calcium
Hip Fracture Risk With Too Much B-6
Astaxanthin for Sun Protection?
Cancer & High-Dose Vitamin D
Chocolate for the Heart?
When To End Probiotics?
Curcumin Effect on Liver
Fish Oil for Strength?
Many Americans Not Getting Enough Potassium
Vitamin D & Breast Cancer Survival
Olive Oil and Prostate Cancer
Vitamin D for Eczema?
Fish Oil Drug May Help
Extra Protein for Extra Muscle?
Iron Deficiency Cause
Curcumin for Weight?
Can CoQ10 Boost Cholesterol-Lowering of Statins?
Vitamin D for Failing Hearts?
Magnesium for Lowering Blood Pressure?
Vitamin D for Dizziness When Rising?
Algal Oil for Attention?
Vitamin C for Foot Ulcers?
High-Dose Vitamin C for COVID-19?
Nicotinamide Riboside to Slow Aging and Reverse NAD+ Decline?
Vitamin K & Risk of COVID Death
Vitamin D for COVID-19
Cocoa for Cognition
Fish Oil & Testosterone?
Cranberry for Overactive Bladder?
Yacon Syrup for Weight Management?
Strawberries for Memory?
Curcumin for Reducing Muscle Soreness?
Ubiquinol (CoQ10) for Cognitive Function?
B12 for Diabetic Neuropathy?
Saffron for Mood?
Energy Drinks and Blood Pressure
Which Form of Fish Oil Is Best Absorbed
Vitamin D for Fibromyalgia?
Probiotic to Prevent Colds?
Eggs and Heart Disease Risk
High-Dose Vitamin D for COVID?
How Good Is Generic Thyroid Medication?
Side Effects of Red Yeast Rice
Lower Dose Melatonin for Children
Vitamin D & Pregnancy
Magnesium for Muscle Soreness?
Resveratrol and Insulin Sensitivity
Chocolate for Cognition?
Vitamin C for COVID-19?
Melatonin for Insomnia?
Muscle Cramps from Lack of Vitamin
Potassium and Dialysis
Do Meal Replacement Drinks Help Reduce Weight?
Folic Acid for Cognitive Function?
Probiotics for Ulcers?
Can probiotics help treat a common cause of stomach ulcers – H. pylori infection? Find out what new guidelines say in the What It Does section of our Probiotic Supplements Review.
For information about other supplements for peptic ulcers (and those to avoid) see our answer to the question: Do supplements help treat peptic ulcer disease? Should any be avoided?
Vitamin D for COPD and Asthma?
Melatonin After Stroke?
Ashwagandha for Exercise Endurance?
Coconut Oil for Lowering Blood Pressure?
Almonds for Wrinkles?
Probiotic for Rheumatoid Arthritis?
Vitamin D for Healing Fractures?
Does Kefir Lower Cholesterol?
Saffron for Sleep?
GABA for Cognition?
Grape Seed Extract for Blood Pressure?
Does Coffee Consumption Lower Cardiovascular Risk, or Is It the Other Way Around?
Melatonin and Cancer
Also see results of a study in which melatonin was given during breast cancer treatment.
See our Top Picks among melatonin supplements.
Folic Acid and Colorectal Cancer
Curcumin & Prostate Cancer
Hyaluronic Acid for Wrinkles?
Probiotics for C. difficile infection?
Niacin for Parkinson's?
Also see our answer to the question: Do supplements help with Parkinson's disease treatment or prevention?
Melatonin and Autism
Calcium, Vitamin D & Heart Risk
Collagen for Joint Pain?
Cranberry for H. pylori Infection?
Fish Oil and Colon Cancer
Statins Plus Fish Oil?
Vitamin D for IBS?
Fish Oil Interaction With Medication
Folic Acid for Hot Flashes?
Possible Toxin in Straws
Ginger for Stomach Flu?
Melatonin & Weight
Vitamin D and Melanoma
Also see our answer to the question: Do any supplements or foods help prevent sunburn or skin damage from sun exposure? Can any increase your risk of sun-related skin damage?
Diabetes & Sardines
Can eating sardines reduce the risk of type 2 diabetes? See what a new study found in the What It Does section of our Tuna, Salmon & Sardines Review. Also see our Top Picks for sardines, canned salmon and tuna.
Learn about the effects of fish oil supplements on blood sugar and insulin sensitivity in our Fish Oil Supplements Review.
Vitamin D & Muscle
Caveat With Prescription Fish Oil Study
An Avocado a Day?
L-Arginine for COVID?
Also see: Do any supplements help with the coronavirus (COVID-19)?
Vitamin D & Triglycerides?
CBD Interaction With Caffeine
DHA & Preterm Birth
Curcumin for Indigestion?
Peppermint Oil for IBS?
Best Form of B-12 for Vegans?
Probiotic for Indigestion?
Omega-7s for Muscle Pain?
How To Get Vitamin K From Food
Latest Supplement Recommendations
- 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.
Spoiled Fish Oil Is Less Effective
Lower Cognitive Function in Kids Linked to High Prenatal Folic Acid
Probiotics Reduce Risk of Diarrhea After Antibiotics
Vitamin D and Knee Arthritis?
Vitamin D Effect on Body Fat and Cholesterol
Vitamin D and Inflammation
Be sure you have the latest information! See the update to the Vitamin D Supplements Review, which includes details on this and other vitamin D studies, as well as our latest product tests.
Calcium May Extend Life or Shorten It, Depending on Amount
Large Study Suggests Best Vitamin D Level
Multivitamin Reduces Cancer Risk in Some
Kidney Stones Linked to Calcium and Vitamin D Supplementation
Does Taking Vitamin D Reduce the Risk of Heart Disease?
Vitamin E Helps Alzheimer's Patients
Lead in Dark Chocolate
Antioxidants: Too Much of a Good Thing?
B-12 Deficiency and Acid Inhibitors
For more information, see ConsumerLab's answer to the question, 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?.