I have been on bupropion xl 150mg for almost a week now I THINK I am feeling more energetic and i am seeing numbers on the scale that i haven't seen in a very long time..HOWEVER I am wondering when the full benifites of this medication should be felt? I am still emotional, weapy i can go from one extreme to the other. So what I would like to know is how long should one wait b4 I ask my doctor to perhaps increase my dose ?