Welcome to HCM,
You are taking cardiac drugs and your BP is under control, as you have strong family history of cardiac death,you should consult your Cardiologist for optimum therapy in your case instead of Vestral alternative Ranolazine is better molecule,.You must be investigated by proper investigations like ECG, Echocardiography
,TMT and if required Coronary angiography
and treatment accordingly may be angioplasty
If there is any evidence of irregular heart rate
then Holter monitoring and EPS ( Elcto physiological study ) will guide for any therapy required.
If there is any cardiac failure or requirement is there resynchronization with placement of ICD may be performed.
To prevent cardiac death these are different modalities, not everything is required in each patient.
Please follow healthy lifestyle and take your regular treatment, follow up with your cardiologist.
By chance if you smoke or drink please quit both.Please take care of diet also keep optimum Lipid profile
Take regular physical exercise.
Please Take care