Suggest Substitute For Levesulpride

once in 2002 i took prothiadine+ plasenzyme these two medicine hurted me by side effects of irrigular heart beats,which still a worry and stress for me.No.2 i am taking levesulpride 25 mg 2 tab/day before meals,my question how can i rectify my heart beats to normal which is hurting me on and off and my sleep is very disturbed is this is due to levesulpride