Ermygerd, I have no idea why anyone would want to take this medicine, it makes you a hollow lifeless zombie!!!!
Other than that personal opinion, I was only on a somewhat low dose for about three weeks, before I went absolutely mad (okay, well, madder :P ). I couldn't tell you for sure if it causes weight gain, because I had a series of untreated hormonal and metabolic conditions at the time, so I was gaining weight like crazy anyway...... but I DO know that, in my year-and-a-half of tampering with psychiatric meds, I gained over 50 pounds. So yeah- they can have those kinds of negative affects FOR SHIZZLE.