I was on Effexor XR 112 mgs for 6 months, when I developed my anxiety again. The Dr. upped the Effexor but I got severe blood pressure. So he took me off Effexor XR - horrible drug.

He then cross tapered me to Prosac starting with 10 mgs with the Effexor. Gradually I was able to get off Effexor. I have now been on Prozac 20 mgs for almost 5 weeks. I am not feeling good. I asked the Dr. if I could up to 40 mgs and he said I could. Does Prozac take longer to work than other SSRI. Is this normal? Thank you.