This medication is used to treat muscle tightness and
cramping (spasms) caused by certain nerve disorders such as spinal cord injury,
stroke, cerebral palsy, and multiple sclerosis. It works by relaxing the
muscles. Dantrolene helps reduce muscle pain and stiffness, improves your
ability to move around, and lets you do more of your daily
activities.Dantrolene is also used with other treatments to prevent
or treat special cases of high fever (malignant hyperthermia) related to
anesthesia and surgery.