I was on effexor for a long long time. So long that when I was eventually off it ... a very slow weaning process ... I was amazed by the difference in my ability to orgasm. I had forgotten what it was like and that it wasn't normal for it take such hard work to eventually get there ... if at all .
For me this side effect never went away and tbh it just didn't suit me all round.
Very happy to be back to normal.