 Procedure The mental health centers pharmacist will encapsulate the bupropion tablets, which will be supplied by the manufacturing company. The study capsules will all be kept in the hospitals pharmacy. Randomization will be performed using a random number table. The code will be held solely by the principal investigator, and will be broken in the end of the studys follow-up period, unless an emergency occurs. All participants will be given the telephone number of the principal investigator for any questions or problems arising. 