Atp UP 60mg Tablet is an anti-arrhythmic medicine used to treat arrhythmia (abnormal heart rhythm). It restores normal heart rhythm by blocking abnormal electrical signals in the heart and improve the condition. Atp UP 60mg Tablet may be taken with or without food. Take it exactly as prescribed by your doctor. Do not take more or less of the prescribed dose. Take it regularly and at the same time each day to get maximum benefits from the medicine. Do not stop taking the medicine until the full course is completed, even if you feel better. Common side effects of this medicine include chest discomfort, breathing problems, lightheadedness, dizziness, and tightness in the chest. Consult your doctor if these effects bother you. This medicine is used with caution for some people. Thus, you must inform the doctor if you are suffering from any kidney or liver disease. Also, let your doctor know if you are pregnant or breastfeeding and about all the other medications that you are taking regularly.