I would highly recommend that your talking to your cardiologist about any heart related medications! As well as your primary should be in the loop but should not be doing your heart medication intervention
Even my local cardiologist felt i needed carvedelol!
It just shows how much or how little people know about Obstructive HCM
There are other medication's that can be tried with your condition.
If your not talking to Mayo i would recommend it
Good luck and let us know what comes of it