Ranolaz 500 Tablet ER is a medication that helps manage angina (heart-related chest pain) by making the heart more efficient and relieving chest pain. It is important to take this medicine in the dose prescribed by your doctor, at the same time each day, and with food to avoid stomach upset. Your doctor will determine how often you should take this medicine, and the dosage may change over time depending on how well it is working. It is essential to take this medicine regularly, even if you feel fine, to get the most benefit. Stopping this medication can result in the return of chest pain.In addition to taking Ranolaz 500 Tablet ER, lifestyle changes such as quitting smoking, cutting down on alcohol, eating a healthy diet, getting regular exercise, and managing stress can improve the health of your heart.Common side effects of this medication include nausea, vomiting, headache, dizziness, constipation, and weakness. If these side effects persist or become bothersome, talk to your doctor.Ranolaz 500 Tablet ER may not be suitable for some people, especially those with liver or kidney problems. Inform your doctor about all other medications you are taking as some may interact with or be affected by this medicine. Pregnant or breastfeeding women should avoid taking this medication unless recommended by their doctor.