I've taken flecainide for about 3 years and it really helped with my ectopics. Lately though they've been building up again. I'm worried that my body has got used to this dose so it's not effective any more. They don't want to increase it - and I don't want to get in a spiral of bigger doses anyway. I'm thinking that as the ectopics are so frequent again, is it worth keeping on with the tablets? People have suggested taking magnesium, which I think I'll try. I don't want to be taking meds that don't work. Can I just stop it, do you think, or gradually reduce? It is practically impossible to get through to our surgery - can't make advance appointments, have to phone and wait for call back, not good if you're at work! would be interested to know if anyone else has found the meds stopping working and what they did about it?