I've been taking Sertraline since 2017 and the doctor has increased my dose more than once in recent months. I'm now on 175mg and it's not helping. He now suggests I try venlafaxine and says a straight switch should be fine, that I don't need to taper the drugs.
Anyone have experience of this? I did find one old thread but it wasn't very reassuring 
I'm a bit worried about it because I really don't need to feel even worse than I do now (though obviously I know switching can be uncomfortable in any case).
Thanks.