Aldactone 25mg is a prescription medication containing spironolactone, manufactured by Pfizer. Each pack contains 20 tablets of 25mg strength. This medication belongs to a class of drugs called potassium-sparing diuretics and is commonly prescribed for various conditions including heart failure, high blood pressure, and fluid retention. The tablets come in blister packs and should be stored at room temperature away from light and moisture. Aldactone works by blocking the effects of aldosterone, a natural hormone that regulates salt and water balance in the body. This medication requires a prescription and should only be taken under medical supervision. The packaging features Pfizer's distinctive branding with a white and magenta color scheme.