As I heard it from him, although I haven't tried anything personally, in Denmark there are some restrictions about importing liquid caffeine, he hates to drink coffee and also soft drinks, but getting caffeine from bubble gum does not provide the same level of caffeine and the water with caffeine drinks you import do not have as high a level of caffeine as soft drinks for some reason so he had to import his own and make his own.

Also as I understand: it is against the rules to import it so it will be stopped if caught but not against the rules to have it so you do not get fines or anything on record. Thus if you buy it abroad you can bring it into country with you unless caught in which case they confiscate it. This used to be the same case with Modafinil / Adrafinil and I suppose it is still the same.

Ah, I misread. I thought you said import from Denmark. Can you not buy caffeine pills in Denmark? A quick search gives conflicting info.

I don’t know what I would even do with liquid caffeine. But again, I don’t want caffeine badly enough to be looking for alternative ways to get it.

well this is second hand from him, so that also makes it about 12 years old, but I figured it seemed like the kind of thing they would keep if not get stricter about.

The problem of course is that they want to make sure you don't take too much caffeine and have a problem, so they want to limit the strength of what you can get and my understanding from him was the strength was limited so that it was hard to get anything into you with the strength of a cup of espresso, as ridiculous as that sounds but nanny-statism is a thing.