No, there are no foods to watch out for or anything like that. Just wouldn't mix it with other drugs, as a genuine and pure opiate experience is definitely quite the experience, and certain combos could be very dangerous. I wouldn't do it if you have work to do, just as you want to be able to relax, and enjoy it as you please without having to worry about work or studying. Take it at home, though, trust me that is really the best enviroment for opiates, especially the first time. 2.5 or 3 pills as I said will be great. If nausea ensues, lie down or sit.