Novel Therapeutic Agent For Amyotrophic Lateral Sclerosis (Als) or Diseases Caused by Als

摘要

There is provided a medicament for treating amyotrophic lateral sclerosis (ALS) or symptoms caused by ALS and/or suppressing the progression thereof, which is characterized in the usage, dosage and administration period of the pyrazolone derivative represented by the following formula (wherein each symbol indicates the same meaning as that defined in the specification):