Hello! Welcome and thank you for asking on HCM! I read carefully your question and understand your concern. You should know that amlokind is a calcium channel blocker, with its main effect on the blood pressure and fewer effects on the heart rate. I would recommend consulting with your doctor to consider the possibility of adding a beta blocker to this therapy, such as atenolol or nebivolol. Betablockers have their main effect on the heart rate and less effect on the blood pressure. So a combination of these drugs, could normalize his blood pressure and heart rate. You should wait up to a week from the change of the therapy to achieve the effect of the new therapy (antihypertensive drugs need up to a week to show their complete effect). Hope to have been helpful! Greetings! Dr. Iliri