I was on 75mg Effexor XR for about 6 months. The first time I tried to come off at about 3 months in I suffered severe withdrawals. Pain everywhere, diahorrea, severe brain zaps, extreme tiredness and crying all the time.
I have been Effexor free now for 11 days using Citalopram instead 10mg daily. I have had next to no withdrawal effects. Of course if you are trying to be med free this solution isnt great but Ive been on Citalopram before and came off it cold turkey with no side effects. So my theory is once all the Effexor body effects settle I should be able to come off Citalopram down the track with no issues. Wish you all the best.