Paracetamol/acetaminophen is a bit of an oddity in that it is very safe when used as directed, but the dangerous dose is uncomfortably close to the effective dose. However, it remains a very safe painkiller, _provided that it is used correctly_.

The typical dose is not 500mg for small children. For instance see https://www2.hse.ie/medicines/paracetamol-for-children/how-a...

> If your baby is age 2 to 3 months, give them 2.5ml of [a specified] syrup. A 2.5ml dose contains 60mg of paracetamol.