Hi there, Thanks for your query. While on anti-hypertensive drugs, dizziness can occur due to ether, excessive fall in blood pressure with or without slow heart rate (Less than 45/min). It is a standard practice to maintain the heart rate to 60 or above. Based on your information, perhaps Telmisartan + Amlodipine taken together in the morning is causing dizziness. It would therefore be advisable if you take Telmisartan early morning, Amlodipine at noon and, Bisoprolol + HCTZ in the evening. However, I am not right doctor to advise you- sitting thousands kilometers away from you. Your treating doctor is the best person to modify the drug schedule, depending on the BP records. Take care