Fludrocortisone is a synthetic corticosteroid medication primarily used to replace or supplement the body’s natural mineralocorticoid hormones in conditions such as adrenal insufficiency (Addison’s disease) and salt-losing adrenogenital syndrome. It helps regulate electrolyte balance and fluid volume in the body by increasing sodium reabsorption and potassium excretion in the kidneys. Fludrocortisone is available in tablet form and is typically taken orally once daily.