Yes, its the same thing. You should have been given a chart with weight and dosages on it. If not it’s available online.

Okay I wasn’t sure because my infants Tylenol says ask a doctor if they are under 24 months and so did the children’s. We already opened it but my husband used it to coat his throat for his cough so I didn’t want to waste it and I still have some infants I can use. He has his 4 month today and I was going to ask then but we don’t have much of the infants left so I figured I’d ask

Infant and children’s Tylenol is the same mg/ml suspension. Children’s is cheaper.

FYI Motrin is not. So always confirm.

I gave it to my daughter when she was teething. I just gave her half of the smallest dose.

I'd definitely go back and get infants..
I'm the UK so we don't have Tylenol here but our children's medicines are made stronger than infants so even if you gave him the right dose for his weight that you would usually do for infant medicine he's still going to be getting a stronger dose than needed for his size/age x

You can call a pharmacy or look it up online and it should tell you the dose to give with children's tylenol.