Can’t see this going wrong… 
I’m currently taking a supplement to help with the side effects of a condition and with TTC. It comes as a big tub of soluble white powder. Due to go on holiday in Europe in a few weeks and ideally I’d take it with me. It takes a while to build up in your system and I don’t want to potentially confuse or set things back by taking a week out.
DH reckons it’s not worth the hassle, as it’s pretty much impossible to work what restrictions apply to supplements, and it’s going to be a lot harder to explain your way round a mysterious white powder, even if I bring it in the original (oddly massive) tub with proof of purchase. I think better that than to decant a small amount into an unlabelled container or trinket à la Bridget Jones.
On balance he’s probably right but wondering if there’s another way. Anyone else had problems with supplements, mysteriously powdered or otherwise?