13 year old ds has a bad cold. I remember for the first time that he can take cold medicine now that he's over 12 so I gave him a Lemsip drink yesterday. He said it was disgusting but worked so I said fine, take the tablets tomorrow instead. I assumed that would be for 12 year olds and over too. So this morning he took one Lemsip max tablet and then casually told me that the label says that over 16's should take 2 tablets and it's not suitable for under 16's. I'm assuming it's because of the caffeine in it which isn't in the Lemsip drink. Will be be ok? He's probably taller and heavier than I was at 16 if that makes a difference but obviously all his organs etc are still only 13 and not fully mature. He seems ok and I will get some cold medicine that is ok for 13 year olds before he needs another dose. I'm so embarrassed I didn't check the label.