“How much paracetamol can a child have?”

Paracetamol is dosed for a child by his or her weight. An optimum dose is 15 mg/kg by mouth every 4 hours up to a maximum of 5 doses in 24 hours. That's how it is dosed. However, a more important issue is what is paracetamol for? It is not for a child who feels "sick." Paracetamol is for fever that makes a child feel bad. And it is for pain or aches. It is not for vomiting, nausea, diarrhea, cough, congestion, runny nose, or mild pains that can be easily relieved by other means including distraction, warm packs, or cold packs. Your doctor would want to know more about what your child means by "feeling sick" to give medical advice. I suggest that communication with your child's doctor is best practice and not posting a vague query to the internet.
I hope your child feels better soon.

Marc Tanenbaum, MD