I'm 100% sure my Tylenol bottles have dosage charts on them, not only because it's so easy to fatally overdose on it but also because manufacturing it is extremely regulated and nobody cares what the manufacturers think about anything.
They used to be easy to find, but some years back they redesigned seemingly all pill bottles to hide the instructions. It’s a frustration and makes me wish ill on whoever is behind it, every single time I need to use such a medicine.