Hello everybody I am new to the group, about 2 months ago my anxiety started getting out of hand. There were days I felt like I was gonna faint, had hot flashes, dizziness, headaches. I went to the doctor and was put on venaflaxine 75 mg I tried it for a week and was a walking zombie always sleeping couldn't eat and lost 16 pounds in two days. I told my doctor I didn't like how the pill made me feel so he switched me to celaxa 20 mg which I can tell a big difference with. I'm still anxious and have hot flashes and always thinking my life is coming to an end.How long do it take before the pill fully take effect and also I have a feeling of emptiness everyday. Should I ask my doctor to up my dose to 40 mg or is this a feeling that will go away in due time? Any thoughts would be greatly appreciated.