My GP has started me on citalopram 10mg to try and help with my low mood, aniexty and other stuff. I took my first tablet last night and this morning I am feeling really sick and my head is killing me. Has anyone took these tablets before? I know it's early days and everyone is different but when did side affects ware off? She said she didn't know how my body would react because of my low weight and being petite but I am wanting to give them ago.