Brief Answer:
Multivitamin supplementation without deficiencies is meaningless.

Detailed Answer:
Thanks for asking on HealthcareMagic.

Pardon me for stating bluntly but your question is equivalent to asking how much water (or anything else) is right to be flushed down the toilet, for nothing. Vitamins are substances required in microscopic amounts and a normal diet contains enough of vitamins that a person needs. Unless there are specific deficiency symptoms, vitamins need no substitution and any un-needed extra supply that you give would simply be flushed out with urine. It is only in very big amounts that overdose symptoms will occur, else you can give any amount you like since it is going to go down the drain anyway.

In short, my suggestion is not to give unnecessary multivitamins. They do not do any good other than making the manufacturers wealthy. Just give your child a wholesome diet and back it by regular vigorous activity for at least one hour daily and your child will grow up well.

Regards

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