Cilidax M 10mg/25mg Tablet is a medicine used to treat hypertension (high blood pressure). It is a combination of two medicines that effectively controls blood pressure when a single medication is not effective. By lowering the blood pressure, it helps in preventing future heart attack and stroke. Early treatment with this medicine improves chances of survival in patients of heart attack. This medicine should be taken regularly with food at a fixed time each day. It should not be stopped abruptly as it may result in sudden increase of blood pressure. This medicine should be used along with a proper diet, salt restriction, and regular exercise for best results. Some patients may develop swelling of ankle as a side effect of this medicine. It may also produce dizziness initially, but this improves with time.