Multivitamin and Multimineral Supplements

Multivitamin/Multimineral Supplements Reviewed by ConsumerLab.com

See the top-rated multivitamins from ConsumerLab's independent testing. Comparison of popular multivitamin/multimineral supplements for women, men, children, seniors, and pets. Includes prenatal multivitamins for pregnancy and a multivitamin for people with diabetes. Also find out which multivitamins failed testing due to problems.

Multivitamin and Multimineral Supplements Review

CL Answers (47)

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Recalls & Warnings (72)

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Clinical Updates (18)

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Multivitamin and the Heart

Does taking a daily multivitamin reduce the risk of heart attack and stroke? No, according to a recently published, major U.S. study. Those who took the popular multi, however, were more likely to report a particular side effect than those who took placebo. For details, see the update in the Multivitamin Supplements Review. More >>

Multivitamin Reduces Cancer Risk in Some

You may have heard that a new study found reduced rates of cancer among men taking a specific daily multivitamin. But there's more to this story... Certain types of men were much more likely to benefit than others. Several multivitamins like the one studied have been tested by ConsumerLab.com, and some Quality Approved products cost as little as 3 cents a day -- a very reasonable investment if it can help you! For details, see the update in the Multivitamin Supplements Review.  More >>

Multivitamin Lowers Cataract Risk

A large, long-term study using a low-dose multivitamin found that it reduced the risk of developing cataract (a clouding of the lens of the eye) by 9% compared to placebo. Interestingly, the reduced risk of cataract was negated when a separate vitamin C supplement was also taken. For details about the study and dosage, as well as our tests and comparison of multivitamins, see the updated Multivitamin and Multimineral Supplements Review.   

Fewer Heart Disease Deaths Among Multivitamin Users

A new study found that multivitamin-mineral users were 35% less likely to die of heart disease than non-users over a period of about 20 years. The apparent benefit was greater for certain people and depended on the type of multi. For more details, as well as our product reviews, see the Multivitamin and Multimineral Supplements Review >> 

Can a Multivitamin Reduce Colds and Flu?

Can regularly taking a multivitamin reduce the chance of getting a cold or flu, or lessen the symptoms and duration of illness among older people? Find out what a recent study showed in the What They Do section of the Multivitamin and Multimineral Supplements Review. Also see our Top Picks among multivitamins for women, men, seniors, children and pets.

Multivitamins & Cardiovascular Disease

Does taking a multivitamin reduce the risk of heart disease and stroke? See what a recent analysis concluded in the Background section of the Multivitamin Review. (Also see our Top Picks among multivitamins.)

Do Multivitamins Help You Live Longer?

Based on recent analysis of a study following over 180,000 people aged 45-75 years for about 11 years, the use of multivitamins was not associated with a reduced risk of dying over that period. However, the results were not analyzed by specific type of multivitamin. See the Multivitamin/Multimineral Review for more >>

Multivitamins May Improve Breast Cancer Survival

A study of women with invasive breast cancer found that those who took multivitamins were 30% less likely to die of the disease during the study than women who did not take multivitamins, suggesting a possible role for supplementation. For more information about the study, as well as tests of popular multivitamins, see the updated Multivitamin and Multimineral Supplements Review >> 

More Evidence of What Multivitamins Don't Do

Several new studies about multivitamins were published this week. The bottom line: In well-nourished people, multivitamins don't reduce the risk of cardiovascular disease or overall-mortality, nor improve cognition and memory. Although some studies have suggested a modest benefit in reducing the risk of certain cancers, no clear cancer benefit for multivitamins has been established. For more information, see the updates to the Multivitamins and Multimineral Supplements Review >>  

Not Enough Iodine in Prenatal Supplements

There is growing concern about inadequate iodine intake among pregnant and nursing mothers. Find out how much should be taken as a supplement -- and which vitamins do or don't have it -- in the update to the Multivitamin and Multimineral Supplements Review >> 

Paleo Diet and Iodine

The "Paleo" diet excludes table salt and dairy products, which are sources of iodine. A recent study investigated whether or not this causes iodine deficiency (which is also a concern with a vegan diet). Get the details in the "Iodine" section of the Multivitamin/Multimineral Supplements Review >>

Early Sign of Thiamin Deficiency

Thiamin (vitamin B1) deficiency can cause lasting neurologic damage and affect heart function. It can occur with poor nutrition and as a result of taking certain diuretics. A recent case highlighted an early sign of thiamin deficiency that involves the eyes. We've added this information to the Thiamin section of the B Vitamin Supplements Review. Also see our Top Pick for thiamin and B complexes that contain thiamin. You can also get thiamin from a good multivitamin.

High Blood Pressure Risk With Too Much Folic Acid During Pregnancy

While it is important to take folate during pregnancy, a new study suggests that too much folic acid from supplements increases the risk of high blood pressure in mothers. See the details in the Folic Acid section of the B Vitamin Supplements Review.

Also see our Top Pick among prenatal vitamins, which provides adequate (but not too much) folic acid, in our Multivitamin and Multiminerals Supplements Review.

Choline Missing From Prenatals

The American Medical Association recently voted to recommend that all prenatal vitamins include appropriate amounts of choline. Getting adequate choline may reduce the risk of birth defects in children, but most women don’t get enough and prenatal vitamins typically provide little to none. Find out how to get adequate choline from supplements and/or foods in the Choline Supplements Review, which includes our Top Picks. Also see the "Prenatal Vitamin" section of the Multivitamin Supplements Review.

Folic Acid & Risk of Autism

Supplementing with adequate (and not excessive) folic acid around the time of conception is associated with a lower risk of autism in offspring, and a recent study suggests this may be particularly important for women who take antiepileptic medication. For details, see the "Folate" section of the B Vitamin Supplements Review >> (Also see information about getting folic acid from prenatal vitamins in the "Prenatal" section of the Multivitamin Review.)

Folic Acid, Multis & Autism Risk

The use of a folic acid or multivitamin supplement during pregnancy was associated a reduced risk of autism spectrum disorder in children according to a recently published study. Be aware, however, that high-dose folic acid during pregnancy may have negative effects. For details, see the Folic Acid section of the B Vitamins Review.

Does Your Multivitamin Have Too Much Folic Acid?

Folic acid is in multivitamins because it is provides the essential B vitamin, folate. Getting too much folate, however, carries risks. What most people don't know is that you actually get 70% more folate from folic acid than labels currently reveal and many supplements expose you to amounts of folate which are not only way above what you need but over the daily limit for tolerable intake. Companies now have until mid-2018 or later correct their labels, but until then you may be in the dark.

To find out which multivitamins exceed the tolerable limit for folate, see the update in the Multivitamins Review. You'll also learn how the daily requirements for many other nutrients have changed and differ from what labels currently tell you.

Be Careful with Iodine -- Especially If You're Pregnant

Unlike over-the-counter medicines, dietary supplements are generally not required to carry warning labels, even if they contain toxic amounts of ingredients. If you don't know how much of a vitamin, mineral, or other ingredient you really need, it's easily possible to get too much. This is what seems to have happened to some pregnant women taking a widely-sold iodine supplement, according to a recent medical report. Just one tablet contained 57 times the daily iodine they needed and more than ten times the limit associated with increased risk of toxicity. Their children were born with congenital hypothyroidism, apparently due to getting too much iodine from their mothers.

Find out which product these women took in the updated Iodine section of the Multivitamin Supplements Review. You'll also find appropriate levels of other vitamins and minerals and see which products in the Review did or did not exceed tolerable intake levels of vitamins and minerals. More >>

News Releases (41)

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