Paroxetine is used to treat depression, panic attacks, obsessive-compulsive disorder (OCD), anxiety disorders, and post-traumatic stress disorder. It works by helping to restore the balance of a certain natural substance (serotonin) in the brain.

Take this medication by mouth with or without food as directed by your doctor, usually once daily in the morning. Taking this medication with food may decrease nausea. If this medication makes you sleepy during the day, then talk to your doctor about taking it in the evening.