Cardibeta D 5 6 25

dytor 5, prolomet xl 25

my husband is suffering from hypertrophic non obstructive cardiomyopathy. recently we visited a doc who suggested to start with prolomet xl 25 & dytor 5 stopping his prior medicine I.e Cardibeta 50 mg. I wanted to know whether we accept or go for a 2nd opinion. what can be the probable results & side effects. your suggestion is awaited.