Mirtazapine pretty much zombified me for a good 6 months where I kind of needed it. Got amazing sleep, but woke up super groggy every day. It was just a haze, no ups or downs. Like a dull bubble?
Decided to stop taking it myself and didn't struggle too much with withdrawal.
Venlafaxine is what I take at the moment, after 7 years of being off meds. I was so against them. Sertraline, fluoxetine, citalopram - all sucked for me. Mirtazapine haze was ok but not again.
I've been on Venlafaxine now it since July 2019 and at first it was the best bloody thing I'd had since my first Valium (ha). Despite the first week feeling like a daily comedown (only physically though - nausea/gurning), my anxiety was nowhere to be seen. Then my GP upped the dose and things went wrong. Then she put me onthe extended release and it's sort of levelled out.
I read lots about people experiencing terrible withdrawal, but the times I've missed doses I've luckily not suffered with anything too bad.