The purpose of this study is to evaluate the safety and pharmacodynamic of CORETOX® in the treatment of post-stroke upper limb spasticity

Inclusion Criteria:

• Male or female patients ≥ 19 years

  • 6 months since the last stroke
  • 2 points in the focal spasticity of wrist flexor and ≥ 1 point at least one of elbow flexor and finger flexor as measured on MAS(0 to 4)

• Informed consent has been obtained

Exclusion Criteria:

• Neuromuscular disorders such as Lambert-Eaton syndrome, myasthenia gravis, or amyotrophic lateral sclerosis
• History(within 4 months of screening visit) or planned(during study period) treatment with phenol or alcohol injection or surgery in the target limb
• History(within 4 months of screening visit) or planned(during study period) treatment with tendon lengthening in the target limb
• Fixed joint/muscle contracture
• Severe atrophy
• Concurrent treatment with an intrathecal baclofen
• Patients who have bleeding tendency or taking anti-coagulant
• Dysphagia and Breathing Difficulties
• History(within 4 months of screening visit) Planned(during study period) treatment with Botulinum Toxin
• Known allergy or sensitivity to study medication or its components
• Concurrent or planed Muscle relaxants and/or benzodiazepine medication If patient has taken these medication stable from one month before screening and no treatment changes are not planned during the study, participation is allowed.
• Current Physical, occupational, Splinting therapy These therapy regimens will be permitted if they have been stable in the one month before screening; no treatment and no changes are planned during the study.
• Patient who are participating in other clinical trials at the screening
• Females who are pregnant, breastfeeding, or planning a pregnancy during the study period, or female of childbearing potential, not using a reliable means of contraception.
• Patients who are not eligible for this study at the discretion of the investigator.