Function：It inhibits the release of excitatory amino acids such as glutamic acid and aspartic acid by stimulating receptors, thereby inhibiting the transmission of monosynaptic and polysynaptic reflexes in the central nervous system brain and spinal cord, thereby playing an antispasmodic role. Reduce the increase in limb muscle tone caused by spinal cord disease, multiple sclerosis, and spinal cord injury. Used for muscle spasms caused by spinal cord and brain diseases or injuries.