Periodic monitoring of serum potassium and ECG is recommended when MicardisPlus is administered with these medicinal products affected by serum potassium disturbances (e. g. digitalis glycosides, antiarrhythmics) and the following torsades de pointes inducing medicinal products (which include some antiarrhythmics), hypokalaemia being a predisposing factor to torsades de pointes.