Used in medical settings to restore fluid and electrolyte balance in patients who cannot take oral fluids, especially after surgery or trauma. Commonly administered intravenously to maintain blood volume and support circulation without adding sodium, making it suitable for patients with sodium restrictions. Helps correct mild metabolic acidosis by providing lactate, which the liver converts to bicarbonate. Often used in abdominal, cardiac, and pediatric surgeries due to its balanced electrolyte composition. Preferred over saline in prolonged fluid replacement to avoid hyperchloremic acidosis.