Your body can’t effectively store all vitamins, that’s why you need to eat healthy every day.
Taking vitamin suppliments can help, if you have a deficiency.
If the vitamin is water soluable, like vitamin C, any excess intake will be peed out and there is no risk.
However, if the vitamin is fat soluable, like vitamin D, any excess will stored within body fat. If you continue to take such vitamins exceeding your daily dosage, you will end up poisoning yourself.
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