It sounds like you're using cough and cold medicine to help you with your depression .. When I was a kid I used to abuse DXM/cough medicine .. we called it robotripping lol anyways it's probably not a good thing to use to help your depression .. Like I said I got high off the stuff when I was in HS and eventually started using hard drugs and smoking pot everyday and eventually turned into a full blown heroin addict .. Not saying that'll happen to you but just be forewarned. There's not much else I can tell you since my depression is always situational. But the other commenters mentioned herbs and supplements .. Try that! If you Google "national remedies for depression" you'll find a buttload of information .. There are actually some docs who are all about it. Good luck; stay strong.