Join our community of Solution Seekers!

Can You Get Too Many Vitamins?

Vitamins are healthy, sure―but there is a risk of overloading. Here's what you need to know.

By Sally Wadyka
Fish with broccoli, beans, nuts and an orangeAnita Calero

Getting too many vitamins from food is almost unheard-of, but if you're taking individual supplements as a backup, use caution. "At megadoses of up to 10 times what's recommended, some nutrients behave very much like drugs," says Lora Sporny, a professor of nutrition at Columbia University.
Some examples: Too much calcium may inhibit iron absorption. Too much vitamin A may interfere with vitamin D function, leading to bone fractures. And vitamin E taken in amounts over 20 times the RDA can have an anticlotting effect―potentially dangerous if you're already taking aspirin or blood thinners. If you are concerned about your vitamin intake, talk to your doctor before you start on any supplements.

Read More About:Vitamins

What do you think about this article? Share your own solutions and ideas

View Earlier Comments

Quick Tip


Juice may serve up vitamins, but it won’t do much to ease hunger: Unlike solid foods, liquids don’t trip the brain’s satiety mechanism. For a more effective snack, pair a glass of 100 percent juice with a few nuts. Get more tips.