Sedation, drowsiness, ataxia, dizziness, confusion, depression, unmasking of depression, hypotension, fatigue, muscle weakness, asthenia, transient anterograde amnesia or memory impairment, changes in vital signs (e.g. resp rate, BP). Thrombocytopenia, agranulocytosis, pancytopenia, hyponatraemia, disinhibition, euphoria, suicidal ideation, nausea, constipation, change in libido, impotence, decreased orgasm. Increase in bilirubin, liver transaminases or alkaline phosphatase.
Potentially Fatal: Resp depression.