is citalopram cns depressant
1 Citalopram (Celexa) is used to treat depression, Social Anxiety Disorder, Panic Disorder, OCD and many other problems. 2  The usual dose for adults is 20-40 mg/day. 3  Most people start at 20 mg/day, and the dose is increased as necessary. Talk to your doctor before you stop taking citalopram. 2  Your dose may need to be tapered down slowly to prevent uncomfortable withdrawal symptoms. 3  Most people experience a few mild side effects, like dry mouth, fatigue or drowsiness when they begin taking citalopram.