i'm on antidepressants anyway, but PMT week 'feels different' to bog-standard depression (at least it's a change, i suppose...).
so far i've tried fluoxetine (Prozac), mirtazapine and currently citalopram, & citalopram has been the only one that does not make me stupidly sleepy (i think that being dyspraxic affects my reactions to psychoactive meds - most people don't get that sleepy).
prozac is licensed for PMT & it does help some people, but no real effect on anything for me. i think citalopram is working on the everyday depression, but not on PMT.
i don't get particularly painful periods - nothing paracetamol can't sort - but the whole mental thing - alternating between killing everyone else & killing myself - is annoying and unproductive. (and i'm running out of old plates to smash).
i've tried evening primrose to no effect, & i recently started flax seed oil (vegan omega-3 source). i also get quite a lot of soya as i'm vegan.