Hello! I take lamictal. I tried different meds before finding this one. It's the only one that has worked for me. All I can suggest is watch her after the other one has gone. It might be having an effect because it is leaving her system. Every med for seizures seems to have side effects and getting used to them or changing them can be very upsetting. I speak from experience. Just let your doctor know and ask questions. It helps having an idea about potential side effects and potential for the med to work. Best of luck! I hope this med works for her as well as it has for me.