It has been shown that depression may be caused because of an imbalance of chemicals in the brain called neurotransmitters. Wellbutrin seems to help balance two of these neurotransmitters called dopamine and norpinepherine. Using an antidepressant like Wellbutrin for an extended amount of time can decrease your chances of becoming depressed again. Using an antidepressant such as Wellbutrin sometimes can have a reverse effect and your depression might become worse. If you or your child experiences this please contact your physician as soon as possible. Teenagers can have very rapid mood swings and in some situations might have suicidal thoughts. Please be very careful with this medication and make sure that you follow the exact prescribed amount that your doctor or counselor told you to take. It is not uncommon to be sad or upset about something for a short time and sometimes even a couple days. The problem that one runs into is that when they feel that way continuously for a week or two, or even as long as a month. When you're down for that length of time it is considered a more severe depression and you might need some help.