Assuming you are referring to typical multivitamins, they have large safety margins, so taking two doses, even over a long period of time, is not going to hurt anyone. On the other hand, it's not likely to give you any particular benefit, so it's wasteful and expensive, as any excess of most vitamins will simply be excreted. There are a few vitamins, particularly D3, which many people actually need in larger doses than they are getting, but doubling up on a multivitamin mixture is not a good way to accomplish that.
No
Good ones cost more obviously - I found my favorite vitamins online at gotbody.com - (New Chapter Perfect Prenatal). They are food based and you take three a day - so your body absorbs more of the vitamins than one a day vitamins (you pee most of it out, unless you cut them up and space them out).
No it isn't
Just dont do it more than 4 times a day
It is difficult to get all the vitamins and minerals you need each day from diet alone. Nutritional supplements, vitamins in particular, are a safe and effective way to ensure that you are getting what your body requires to function well. When choosing supplements, vitamins should be whole food-based rather than synthetic. Vitamins made from whole food sources are much more absorbable than their synthetic counterparts. Look for a vitamin that is taken throughout the day rather than only once. Many vitamins have herbal supplements as well. These offer natural ways to help your body work at its fullest potential.
Drinking in moderation -- less than two drinks a day for adult males, one drink a day for females -- is not known to be bad for you. Anything more than that has potential ill effects.
Yes. It is recommended to tan no more than once a day.
you shouldnot take more than one vitamin a day because most vitamins contain iron which is very dangerous if overdosed and can result in death
Young take 1 a day.
No they are not bad for them as they are like chocolate to them just don't feed them too no more than 1 a day.
less than one according to their website
Something near, if not more than 22000.