I have an appointment with the same general neuro consultant again on 27th May. I had 11 episodes in March in the end, and after some reading around, decided to start taking Magnesium, Vit B2 and CoQ10 (4th April) - everything I've read said 3-4 months to have any effect but April seems to be much fewer episodes so far - yippee!! - only 4 episodes so far :-) could just be a coincidence but don't care! Will let you know how appointment goes - want to get off these other meds, cos they're clearly not working, and get something else that does work!!