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The Bottom Line. Taking one vitamin B complex tablet a day is not likely to cause toxicity, so you don't have to worry as long as you don't take more than the dosage recommended on the product label. For example, the upper safety limit for niacin is 35 milligrams daily for adults.
We used to think that B vitamins were harmless because, being water-soluble (like vitamin C), they can’t accumulate in the body like the fat-soluble vitamins (A, D, E, and K). However, we now know that a high intake of certain B vitamins can be troublesome.
You’re unlikely to get too much vitamin B complex from your diet. That’s because B complex vitamins are water soluble. That means they aren’t stored in your body but are excreted in...
Some can have serious health consequences if you get too much of them. Others will do damage if you don’t have enough. Oh, and in addition to their “B” name, they each have an alternative ...
We’ve established that taking too much of certain vitamins and minerals can be toxic and come with side effects. And much of this depends on whether you take water-soluble or fat-soluble vitamins.
As B vitamins are often given as supplements and found in fortified foods, there is some risk of taking too much B vitamin. There are eight B vitamins; thiamine, ribovlavin,...
WebMD explains why taking too many vitamins can be unhealthy and even dangerous, and how to be sure you’re getting the right amount of vitamins and minerals.
Safety and side effects. Consuming vitamin B-6 through food appears to be safe, even in excessive amounts. When used as a supplement in appropriate doses, vitamin B-6 is likely safe. However, taking too much vitamin B-6 from supplements can cause: A lack of muscle control or coordination of voluntary movements (ataxia)
How Much Vitamin B12 Is Too Much? Benefits. Helpful or harmful? Dosage. Bottom line. This essential vitamin is generally considered safe, even at high doses. However, most people get enough B12...
Taking a B-complex vitamin may benefit your health if you do not get enough B vitamins from other sources. This can include people who are pregnant, vegan, or have certain medical...