hi all. i have been on 20mg citalopram for 12 days for pnaic/ga/ocd. i have had side effects such as jaw clenching, headaches, v little sleep (awful) and my mind racing with thoughts so fast it feels like its going to explode! how long does this go on for?! i have managed to get through the last 12 days through sheer acceptance but suppose i am starting to panic that they are not going to work for me although i have been on ssri's several times in the past and they have. the last few days therefore i have been feeling panicked and tearful again. how long do those out there on citalopram reckon it takes to kick in?!