Fludrocortisone is primarily used in the treatment of conditions where the body’s natural steroid hormone levels are insufficient, such as Addison’s disease or adrenal insufficiency. It helps regulate sodium and potassium balance, maintaining blood pressure and fluid levels in the body. Additionally, it is prescribed for orthostatic hypotension, a condition where blood pressure drops significantly upon standing, to improve symptoms like dizziness and fainting. In some cases, it is also used to manage salt-losing forms of congenital adrenal hyperplasia, aiding in the normalization of electrolyte levels. Its mineralocorticoid activity makes it essential for patients requiring hormone replacement therapy.