citalopram /saɪˈtæl.əˌpɹæm/ noun1 •A drug that functions as a SSRI and is administered orally in the form of its hydrobromide C₂₀H₂₁FN₂O·HBr to treat depression and anxiety. It is marketed under the trademark Celexa.Citalopram, 20mg. Morning tremors. No other reaction. — 2002