Trazodone is used in the treatment of depression.
How Trazodone Works Trazodone modulates the levels of serotonin in the brain. Serotonin is a chemical messenger that helps regulate mood.
Common side effects of Trazodone include sleepiness, dizziness, constipation, blurred vision, headache, vomiting, dry mouth, nausea, fatigue, confusion, edema (swelling), hypotension (low blood pressure), fainting, drowsiness, pain, nasal congestion (stuffy nose), weight gain, and weight loss.