Just over two weeks ago I had to change from 20mg Citalopram to 10mg Escitalopram. I had some headaches and so on but thought I was managing it well and everything was going ok. However the last 4/5 days I have had bad nightmares, increasing anxiety/panic, intrusive thoughts and headaches. Has anyone else had any of these side effects from switching? I知 very on edge at the moment and appreciate some advice/support if possible.