Never worked for me either - just puked it up again! If it gets that bad the only thing that works is enough painkillers to knock me out then about 8 hours sleep in a dark room. I've learnt not to ignore the aura and whack it with 3 paracetamol which usually stops it developing. I've also found that cutting out caffeine and taking a taurine supplement has reduced the incidence mightily, from 1 or 2 a week to every couple of months.