Every time I remember to take my seasonal allergy drug, I'm reminded with amusement of the very nice intern who earnestly asked me if I ever felt addicted to it. This would be the drug that I have an elaborate system to remind myself to take every day (not always a successful one). My allergy season is basically over so soon I'll get to forget it all for another year.
(The drug is steroid based and I think that's a standard question with any steroid drug.)