I've now been on fluoxetine for three weeks now and after some horrible side effects things seemed to improve until saturday night when all of a sudden I felt so weak and dizzy and had a massive panic attack. Ever since then I've been feeling on edge, weak and tired. If i wake up in the night I don't feel like I'm in control of my body and when I stand up my head feels unreal, dizzy and my hearing is slightly muffled. I really can't deal with this anymore. Can anyone give me any advice? Dan