Telkonol-BS 5 Tablet is a combination medicine used to treat hypertension by relaxing blood vessels and improving heart efficiency. It is recommended to take it daily, with no symptoms, and to maintain consistent levels. Regular exercise, weight reduction, and a healthy diet can help control blood pressure. Common side effects include headaches, cold extremities, slow heart rate, numbness, decreased blood pressure, weakness, and increased potassium levels. It may cause dizziness and may require regular monitoring. Consult a doctor if you have liver, kidney, pregnant, or breastfeeding issues.