I'm always surprised at the hostility to Acetaminophen on HN (or Paracetamol as we call it here in the UK). It's one of the most commonly used medicines in the UK - and certainly the most popular painkiller. YouGov even did a survey confirming that - https://ygo-assets-websites-editorial-emea.yougov.net/docume... The safety aspects of it are not something that gets raised in the UK much - other than suicide attempts,…
If Paracetamol was invented today it would likely never receive an OTC (over the counter sale, meaning you can just buy it from a retail outlet the way you'd buy cough medicine or toothpaste) license in the UK. Yes, it's safe (and for a bunch of people including me, effective) at the licensed dose, but it's useless at about half that dose, and it's toxic, leading to very nasty deaths in some cases, at just about 3-4…
The efficacy window of driving cars is pretty narrow, and represents existential risk to third parties. But as with cars, sometimes the balance favors wide availability.