Mirtazapine caused pms!!
I've had really bad pms for years in my early thirties. I thought I cured it by supplementing b12. Now at almost 37 I suddenly have really bad pms again. Turned out it wasn't the b12 that cured it, but around the same time I also quit Mirta that I had used for a couple of years. Now I'm back on Mirta for 6 weeks and poof, pms is back!!! What the helly! Only on 1,875mg now and 3,75mg before. Years in between nothing with no pms either.