Ranx 1000 Tablet ER is used for the management of angina (heart-related chest pain). It helps to prevent new attacks of angina but does not stop an acute attack, once started. It relieves chest pain by making the heart work more efficiently. Ranx 1000 Tablet ER should be taken in the dose as advised by your doctor, at the same time each day. It should be taken with food to avoid stomach upset. Your doctor will decide how often you should take this medicine. This may change from time to time depending on how well it is working. You should take this medicine regularly to get the most benefit, even if you feel fine. It is preventing future harm. If you stop taking it, your chest pain may come back. You can improve the health of your heart by making some lifestyle changes such as quitting smoking, cutting down on alcohol, eating well, taking regular exercise, and managing stress. Some common side effects of this medicine include nausea, vomiting, headache, dizziness, constipation, and weakness. Talk to your doctor if these bother you or do not go away. Ranx 1000 Tablet ER may not suitable for some people. Tell your doctor if you are suffering from any liver or kidney problems. Also let your doctor know all other medications you are using as some may affect, or be affected by this medicine. This medicine is not usually recommended during pregnancy or breastfeeding.