Tonicard is a homeopath
medication with claimed benefits on cardiac system. I am not sure if it has been tested through systematic clinical trial for any of the proposed benefits. Secondly, if you have developed bradycardia
recently and acutely, then do see a Cardiologist without any delay. But if it is there chronically since years then you can take your own time, get ECG done and see the Cardilogist. Amlodipin helps increase the pulse rate so if your blood pressure is not under control then increase the dose of the same which will help you in two ways. Do avoid any kind of beta blockers till you see the Cardiologist and get evaluation done. All the very best.