I have a hard time believing that you were serious about the latter two examples, given what I found.
Nutmeg is a psychoactive substance at the right dose and at around 7-8 times that dose it can be lethal. That is more dangerous than alcohol.
With dextromethorphan the ratio of a dose that gets you high to the dose that kills you is about the same as alcohol.
How many people have died of a nutmeg overdose? http://www.ncbi.nlm.nih.gov/pubmed/11343860 seems to suggest that it's rare.
> Paracetamol isn't my cup of tea either and discourage its use
Why? When taken at the correct dose it's a safe, effective, pain killer. People do need to be careful to avoid overdose, which means that packets should probably be a bit clearer when they include paracetamol / acetaminophen.