hi thank you and pleased to answer you Metoprolol beta blocker drug family, works by relaxing blood vessels and slowing heart rate, which improves blood flow and lowers blood pressure. But you are badly stabilized in term of hypertension by this drug. As beta blocker, Metoprolol can also improve the likelihood of survival after a heart attack. For this reason, your doctor prescribes it to you. But actually, you need to add to it another drug to stabilize your hypertension, as Metoprolol failed to do it. A salt regimens is indisputably a way to achieve your target, sport also. Metoprolol and amlodipine may have additive effects in lowering your blood pressure and heart rate. You may experience side effects like headache, dizziness, lightheadedness…etc. I prefer that you add to metoprolol, Perindopril 5, an angiotensin enzyme inhibitor in order to stabilize your hypertension. And there is no interaction between Metoprolol and perindopril may this help you and best wishes.