Baclofen is a muscle relaxer and an antispasmodic agent. Baclofen is used to treat muscle symptoms; such as spasm, pain and stiffness; caused by multiple sclerosis, spinal cord injuries, or other spinal cord disorders. It is given intrathecally (directly into the spinal cord) or orally (by mouth).
Baclofen, sold under the brand name Lioresal among others, is a medication used to treat muscle spasticity such as from a spinal cord injury or multiple sclerosis. It may also be used for hiccups and muscle spasms near the end of life. It is taken by mouth or by delivery into the spinal canal. Wikipedia