Angina is chest pain or discomfort that happens when there is not enough oxygen-rich blood going to part of your heart. This can occur when the blood vessels of the heart become narrow. Carvidon -MR Tablet relaxes the blood vessels so that blood can flow more easily and makes sure that your heart is getting a good supply of oxygen. This makes it less likely that you will suffer chest pain caused by angina. Trimeford -MR Tablet can also help increase your ability to exercise and lead your daily life more easily by reducing the frequency of angina attacks. You should take it regularly and as long as it is prescribed for it to work effectively.