Why do I have a headache while taking medicine to treat the disease?

Question:
Hello Doctor. I have a congenital heart disease with a ductus arteriosus, currently resting at home. The hospital doctor gave me 7 drugs to not increase my heart rate, but caused bloating after lunch and dinner. I also often get headaches. I measured blood pressure and counted heart rate 3 times with the following results: 1st time blood pressure 104/59, heart rate 74; 2nd time blood pressure 114/60, heart rate 79; blood pressure 90/55, heart rate 83. Measurements are spaced about 5 to 10 minutes apart. So what is the cause of my illness, doctor? Thank you doctor.
Nguyen Dinh Hoa (1955)
Reply:
Hello, sir. Headache is a symptom of many diseases, and when taking some drugs like Imdur, Nitromint... also has an undesirable effect of headache. However, you should screen for more physical diseases in the brain, should take MRI of the brain, take more cerebral arteries for the best screening.
Thank you for sending questions about vimec website. Best regards.
Master, Doctor Ngo Dac Thanh Huy - Department of Medical Examination & Internal Medicine - Vinmec Da Nang International General Hospital.