He is 13KG, in pretty good health in general.
We are now about ten hours latter and there are no irrigular signs. He's happy and ready to go to school. He had a normal night.
I got worried by warnings of danger, even fatal danger and liver damage, I saw on the internet, even with a small overdose. I also saw that maybe vomiting can make it worst in some poison situation (though i did not see anything about tylenol).
I also got a similar reassuring opinion from a poison emergency center in Canada (and I live in China). I wonder why the warnings are so scary.
Thank you for your answer,