Frusene is a combination medication primarily used in the treatment of fluid retention (edema) associated with heart failure, liver cirrhosis, and kidney disease, including nephrotic syndrome. It contains two active ingredients: furosemide, a potent loop diuretic that helps the kidneys eliminate water and salt through urine, and spironolactone, a potassium-sparing diuretic that prevents the body from absorbing too much salt and keeps potassium levels from getting too low. By working together, these components help reduce swelling and fluid buildup in the body, which can alleviate symptoms such as shortness of breath and swelling in the abdomen, legs, or ankles. Frusene is typically prescribed when other treatments have not been effective, and it is important for patients to follow their healthcare provider's instructions closely, including any dietary recommendations, while taking this medication.