Hello, With the lack of information regarding your wife's condition, prescribed treatment and diagnosis I can only assume what her condition is and what medications has been given to her. Assuming she has low ejection fraction number and the tablets she's been provided are beta-blockers, angiotensin II receptor blockers (ARBs), or Angiotensin converting enzyme (ACE) inhibitors. Low EF number is an early sign of heart failure because of reduced pumping of blood to the rest of the body; these tablets are basic treatment options to prevent it. If you want to consult a different cardiologist I will list a few of the best heart hospitals all over India - Cardiologist in India.