Spylacton-25 mg Tablet 10's is used to treat oedema (fluid overload) associated with hepatic cirrhosis (chronic liver damage), congestive heart failure, and nephrotic syndrome (a kidney condition characterized by excessive protein loss in the urine). It is also effective in managing hypertension (high blood pressure), hypokalaemia (low blood potassium levels), primary hyperaldosteronism (a condition with excessive aldosterone hormone), and heart failure. It contains Spironolactone, which works by increasing the amount of urine that is passed out from the kidneys. It effectively reduces excess fluid levels in the body and treats oedema (swelling) associated with heart, liver, kidney, or lung disease. This reduces the heart's workload and makes the heart more efficient at pumping blood throughout the body. Thus, it helps lower high blood pressure, reducing the chances of heart attack, stroke, or angina (chest pain) in the future. In some cases, this medication may cause common side effects, including low blood pressure, dehydration, drowsiness, dizziness, high potassium levels, low sodium levels, elevated creatinine levels, headaches, breast enlargement in males, and absence of menstrual periods in females. Before taking this medication, you should tell your doctor if you are allergic to any of its components or if you are pregnant/breastfeeding, and about all the medicines you are taking and any pre-existing medical conditions.