Mr. S. A. 71 yrs pt from a low socio-economic group is a regular patient of an unqualified doctor who was treating him with tab Bisacodyl or Liquid Paraffin every alternate day for the last 1yr for the complaint of Constipation.
One fine morning he landed in the Emergency of a Hospital for extreme weakness, tiredness & muscle cramps. ECG showed prolonged QT waves, flattening of T wave & occasional AV block. His serum Potassium was low--2.8 meq/l. Which of the above medicine was responsible for the above condition?
