Dantrolene is a skeletal muscle relaxant that works by reducing excessive calcium release within muscle cells, helping to control abnormal muscle contraction and rigidity. It plays a critical role in the emergency management of malignant hyperthermia and is also used in selected conditions associated with severe muscle spasticity or neuroleptic malignant syndrome. For eligible patients, treatment is intended to rapidly stabilize muscle activity, reduce potentially life-threatening complications and support improved clinical outcomes during acute medical emergencies.