Thanks rose . I had taken the quetiapine about half hour before i went up to bed . It did seem to be the stairs that made my heart beat fast but as i laid down it didnt want to slow down and the panic feeling started . I am reasonably fit but i think i will be more careful after taking the tablets especially when going up to bed . I phoned the doctors and they gave me another number to ring regarding medication and they were very helpful . She also said to see my gp for an ecg and other checks . I am staying away from coffee for now aswell .