<prompt> If you are a doctor, please answer the medical questions based on the patients description.I had three stents put in 56 years ago. I have never had high blood pressure or high cholesterol, but the Cardiologist that inserted my stents insists that I take Simvastatin, and Niacin for cholesterol and Atacand for blood pressure. Lately, I have been getting light headed and my blood pressure we have a home device ranges from 11060 to 13578. Without my Cardiologists permission Im cutting my Atacand in half, but still feel light headed. Advice beyond, go see your Cardiologist?  <response>: Hello, If you were not hypertensive before, then you can stop your Atacama and see if your symptoms improve. But by that time, you need to monitor your blood pressure daily for a week, and if it stays below 14090 mmHg, then theres no need to start Atacama back. I would also like to advise you to check your serum electrolyte level as electrolyte imbalance due to medicines can also produce symptoms like these. Hope I have answered your query. Let me know if I can assist you further. 