I'm living in Japan on a work visa and I'm planning on visiting my family in America this Christmas (I'll be back before I have to renew my visa) and I just wanted to make sure there would be no complications with my leaving and reentering the country. I've never done anything like this before so I wanted to make sure there aren't any special catches or anything. Of course, I'll need to have my passport and Japanese residence card with me, but are there any potential complications in leaving for a simple visit in America and then coming back into Japan? I'm also curious if I can bring my Lexapro with me (I brought it into Japan with no problems and it is sold in America too, of course, but do I have to "declare" it? And if so, how?), and how I "declare" food items (I wanted to bring some fruits and vegetables as souvenirs but it sounds like that isn't allowed, so I'm thinking of bringing sweets instead).