Your body needs small amounts of vitamins every day in order to work well. But when it comes to vitamin supplements, too much of a good thing can be toxic.

It's a hot topic in the debate about viruses and immunity. While vitamins can be a healthy habit, expert sources share ...

Too much vitamin A, particularly from supplements or animal sources (retinol), can lead to toxicity known as hypervitaminosis A. Symptoms: Dizziness, nausea, headaches, dry skin, joint pain, and in ...

Put down the pill bottle. Turns out, you can get too much of a good thing when it comes to certain vitamins and minerals. And ...

Vitamins have expiration dates, but that doesn’t mean you must toss them once they pass. Here’s why they don’t expire the way you might think.

You cannot overdose on vitamin B12 because any excess ... These include: While there's no upper limit to how much vitamin B12 you can take, there are general dosage recommendations.

You can overdose on melatonin which causes daytime ... at Mount Sinai School of Medicine in New York City. Melatonin supplements are not regulated by the US Food and Drug Administration (FDA ...