Back again! Have been taking this foul stuff for almost two weeks (2.5) and although it has lowered my heart rate it dosnt seem to be doing much for my palpitations. Does it take awhile to be effective in this respect does anyone know. Have been trying to get a GP appointment to discuss all these awful side effects. Woke with monumental headache and dizziness this morning., and feel perfectly dreadful. Can't see GP until Fiday.