Thanks to all of you who responded to my question about keppra...Since I last posted the message (several weeks ago) my doctor increased the dose from 500mg bid to 750mg bid...I am not sure if its the increase in medication, but I am experiencing some "sadness" at times I feel I could just cry at any given moment...For those of you that are on Keppra or may have been on it, have you had such a reaction...And if so how long does it last... Also Pacemaker52 you said you have taken it for several years with no side effects...Do you take any other medication? I am only on keppra, although all the reading I have done it states that it is usually used in addition to other meds...Once again any feedback would be greatly appreciated....