Suggest Medication For Rheumatic Fever

i am having NIDDM since last 12 yrs h/o rheumatic fever at age of 17 yrs ecg shows RBBB with LAHB since 12 yrs feeling of skip beats since last 30 yrs .echo trivial mvp with trivial ar tmt negative holter normal t/t taking metolor xr 50 mg with oral hyoglycemics skip beat frequency increases with anxity and stress