Well, without a prescription, it may be illegal. Codeine without any APAP or ibuprofen is Schedule II. I don't have any experience with full disclosure; I've only gone the other way and put them in other bottles (it's important to note that the other bottles contained what the label said they did - i.e. if I put hydro in a vitamin bottle, it was amongst vitamins), and nobody's asked me to open any bottles.

I would just flip out about the foreign language on the blister packs - a lot of people know about drug importing from the news, and airport screeners watch the news...