I started on citalopram 10mg 4 weeks ago. Ive noticed my head feels a little clearer, my mood has improved but i feel so tired and really panicky. Im doing my best to ride the anxiety out but it is really hard. Does it tend to get better after 6 weeks or is it worth going back to the GP and upping the dose? Also if i take the 20mg will it make me even more drowsy??