"i was prescribed this a few week&#039;s ago but had to stop taking it. i currently take seroquel (quetiapine) 100 mg, and was not sure why the psychiatrist would prescribe the celexa (citalopram) as i had been informed by a pharmacist that combining seroquel and celexa is dangerous and could possibly cause heart problems. there is a major drug interaction between those two meds, as that would explain why my chest was hurting and my depression actually got way worse, i also didn&#039;t have an appetite at all while on the celexa so i had to just stop taking it. horrible drug."