Flecarite 100 Tablet is a medicine used to treat certain types of arrhythmia (abnormal heart rhythm). It restores normal heart rhythm by blocking abnormal electrical signals in the heart. This helps to maintain a regular and steady heartbeat. Flecarite 100 Tablet should be taken regularly as advised by the doctor. You should take it on an empty stomach and at a fixed time. This medicine should not be stopped abruptly without consulting the doctor as this can worsen your condition. Regular follow-up with your doctor is advised while using this medicine. Side effects like dizziness, blurred vision, headache, weakness, edema (swelling), and irregular heart rate may be seen in some patients. Your doctor may advise for regular monitoring of blood sugar levels and kidney function while you are taking this medicine. This medicine may not be suitable for some people. You must inform the doctor if you are suffering from any heart, liver or kidney disease. Also, let your doctor know about all the other medications that you are using regularly. This medicine is not usually recommended during pregnancy or breastfeeding, so always consult your doctor before taking it.