Nefidinol Retard 10mg Tablet is a calcium channel blocker medication used to treat high blood pressure and prevent angina. It lowers blood pressure and reduces the heart's workload, preventing heart attacks and strokes. The dosage and frequency are determined by the doctor, and it can be taken alone or with other medications. It is best to take it at the same time each day, as it is sensitive to light. It is important to follow the doctor's advice and avoid stopping the medication if symptoms persist. Common side effects include fatigue, edema, dizziness, unusual heartbeats, flushing, constipation, and headache. Consult a doctor if you have any heart, liver, or kidney problems, and avoid excessive alcohol intake. Regular blood pressure checks are recommended.