Travelling to Amsterdam from Gatwick

Hi Peeps

Me and my partner are travelling to Schipol from Gatwick on Sunday and I wanted to take my mighty and prescription with me, does any one have experience going with their prescription? I have got a travel letter from my Doctor and i am getting it printed off along with my prescription, is there anything else i need? do i need to get the travel letter legalised or anything like that? should i put it in my hold luggage or carry-on? i wont take it all in case they take it away for any reason

anyone with experience or advice would be greatly appreciated (especially as i wont have time to get it legalised now if i need too haha)