Back again - sorry folks. So, took a five day course of prednisolone steroids from last weds to Sunday for another health issue (groan). High dose - 60mg a day. All day today I have as though I have been going cold turkey with shakes, trembles, dry mouth, thirst, horrid taste in my mouth. All this together with the additional palpitations that seem to have emerged since being on flecanide ..and then a bout of AF thrown in this afternoon/evening. GP says I was not on steroids forlong enough to have withdrawal symptoms, but I just wonder if the interaction with flec and warfarin could exacerbate it. Anyone else experienced this?