I've noticed that I can hardly tolerate the heat and humidity in the region that I live. Is this normal? I'm also discontinuing the useage of Effexor XR 75mg. Tried the decrease in usage method(37.5mg)for 10 days and then one every other day for 5 doses. I got so nauseated-felt like was on a merry-go-round constantly. I could not stand the dizziness that I only took 1 of the 5 day doses. Suffered through the withdrawal symtons and it's only been 1 week since I stopped taking the Effexor Xr all together and I still don't feel 100%. Could taking warfarin also effect how I feel coming off the Effexor XR? I wanted to get off the Effeor XR because I had a lot of the side effects that were the result of taking it. I'm 59 yrs old and I use to be able to keep up with my grandchildren BUT I find I can't - is this a because of the warfarin?