NIFERIL RETARD 20MG TABLET is a medicine used to treat high blood pressure (hypertension) and to prevent angina (heart-related chest pain). It belongs to a class of medicines known as calcium channel blockers. It lowers blood pressure and reduces the workload of the heart. This helps prevent heart attacks and strokes. NIFERIL RETARD 20MG TABLET may be prescribed alone or along with other medicines. The dose and how often you need it will be decided by your doctor so that you get the right amount to treat your condition. Your doctor may adjust the dose depending on how you respond to this medicine and your blood pressure levels. You can take it at any time of the day, with or without food, but it is best to take it at the same time each day. Take this medicine as soon as you have taken it out of the packet. It is sensitive to light and may not work properly if it is left out of the pack for too long. Keep taking it for as long as advised by your doctor. Even if you feel well, do not stop this medicine on your own because high blood pressure often has no symptoms. If you stop taking it, your condition may get worse. Keeping Active with regular exercise, reducing your weight, and eating a healthy diet will also help control your blood pressure. Follow your doctor’s advice while taking this medicine.