list of adverse effects of trazodone list of adverse effects of trazodone this is a list of adverse effects of the antidepressant trazodone, sorted by frequency of occurrence. very common very common (>10% incidence) adverse effects include: blurred vision dizziness somnolence dry mouth nausea headache fatigue common common (1–10% incidence) adverse effects include: vomiting constipation diarrhea backache confusion insomnia dream disorder disorientation incoordination nasal congestion orthostatic hypotension syncope tremor weight change anxiety hypotension oedema lack of coordination dysgeusia memory impairment migraine paraesthesia agitation dyspnoea night sweats uncommon uncommon (0.1–1% incidence) adverse effects include: hypersensitivity reaction muscle twitching amnesia aphasia hypoesthesia speech disorder bladder pain urinary incontinence gait disturbance reflux oesophagitis dry eye eye pain photophobia hypoacusis tinnitus vertigo acne hyperhidrosis photosensitivity reaction flushing rare rare (<0.1%) adverse effects include: urinary retention prolonged qt interval torsades de pointes ataxia breast enlargement or engorgement lactation cardiospasm stroke chills cholestasis clitorism congestive heart failure diplopia extrapyramidal symptoms hallucinations haemolytic anaemia hirsutism hyperbilirubinaemia increased amylase increased salivation leukocytosis leukonychia jaundice liver enzyme alterations methemoglobinemia paraesthesia paranoid reaction stupor rash seizure priapism pruritus psoriasis psychosis suicidal ideation suicidal behaviour syndrome of inappropriate antidiuretic hormone secretion tardive dyskinesia serotonin syndrome unexplained death urticaria vasodilation