There is some risk to the liver or gallbladder disease, or severe kidney problems. Your doctor should perform periodic blood tests to monitor the health of your liver. Regular blood tests
would be appropriate to safe guard against any of the known risks. I haven't heard or read any mental distrurbance, irritability, etc. from the medication...something else may be going on.
On an individual basis it may be an underlying cause, and very rare, so it is not listed as possible side effect?!.
Thank you for the question