I will soon be coming to Japan, and I need to bring an epi pen with me for bee stings. I have the epi pen in the original box with prescription label clearly on it. Will I need anything else to get it through customs? It is a single needle for personal use, and I don't want to run the risk of having it confiscated. My mother said she brought hers through Customs without any other paperwork, but that was years ago, and I don't want to get in trouble.