From my personal experience in the EU, airports will be mostly careful about explosives, not about small amounts of drugs. I had prescription pills in my carry on, also a lot of different vitamins in one packer bottle, multiple times, and nobody ever cared or questioned what it was, or even acknowledged it. I did put kratom in a matcha container in my checked in bag - again, nobody cared or questioned anything about it. I assume they won't care about the small amount of drugs anyway, because it