Sometimes the mentality is if it's a safe drug, taking more of it isn't going to be harmful. They take a few more, not intending to harm themselves, but they can. They just don't realize how dangerous acetaminophen is to the liver.

Sometimes people won't notice symptoms for a few days. They might experience some abdominal pain, some vomiting, but then they might notice things such as yellow discoloration to their skin, eyes, dark colored urine. By the time you see those symptoms, you might have some serious liver damage.

I think it's because there are so many products that contain acetaminophen.

If you give a child -- a young baby -- one teaspoon of acetaminophen infant drops, you are giving them the equivalent of one Extra Strength Tylenol tablet.