Whenever we go on holiday within the UK, we take some general medicines (such as paracetamol, ibuprofen, travel sickness tablets, etc) as part of a first aid kit. What are the rules around this when travelling abroad in Europe? I know that there are rules to follow for taking prescription medicines and that there are some restrictions, especially with controlled substances such as codeine. I've tried looking it up online for things like paracetamol, but it keeps referring to bringing a copy of your prescription.
I know it will be possible to visit a pharmacy abroad if anything is needed, but I prefer to have things on hand to save having to faff around in the middle of the night. Am I just overthinking it?