If they in boots containers with the seals intact then i cant see the harm.
But if you get x rayed dont be surprised if some customs person asks you at least some questions regarding them.
But im sure others take vitamins with them. I have taken head ache pills in the foil packs you get and head no problems but never though UAE (never been there).
Cant see there being a problem with vitamins and minerals, just customs checking possibly that they are what you say they are![]()