My Doctor Prescribed Korandil 5 Though I Never Had Chest

my doctor prescribed korandil 5 though i never had chest pain and with hypotension. but i had clogged arteries and inserted a stent 2 years back. for one year ago i developed a breathlessness and my doctor [other one] prescribed frusel xbd and my problem was just gone ? temporary. This new doctor was thinking that i might have blockege some other arteries. please answer my queries as above.