Definition of Multiple vitamin overdose:

Multiple vitamin overdose occurs when someone accidentally or intentionally takes more than the normal or recommended amount of multivitamin supplements.

This is for information only and not for use in the treatment or management of an actual poison exposure. If you have an exposure, you should call your local emergency number (such as 911) or the National Poison Control Center at 1-800-222-1222.

Poisonous Ingredient:

Any ingredient in a multiple vitamin supplement can be toxic in large amounts, but the most serious risk comes from iron or calcium.

See also: Iron overdose

Where Found:

A variety of mutivitamin supplements are sold over the counter.