Yes, medicines can sometimes cause side effects even when taken as prescribed. Doctors prescribe medication after considering their benefits and possible risks. If you notice any side effects or unusual symptoms, it is essential to inform your doctor so the treatment can be checked and adjusted if needed.

A fast heartbeat can happen due to stress, anxiety, or underlying health conditions. Concor COR 2.5 helps keep your heart rate steady. Continue taking it as advised by your doctor and do not stop the medication suddenly without talking to the doctor. Try reducing caffeine, staying hydrated, and sleeping well. If your fast heartbeat becomes frequent, follow up with your doctor.