What is the brand name of methocarbamol?

A. Zanaflex is the brand name for tizanidine, a central alpha-2 adrenergic agonist. It reduces spasticity by increasing presynaptic inhibition of motor neurons within the spinal cord. It is pharmacologically distinct from the carbamate derivative specified in the question stem. B. Lioresal is the proprietary name for baclofen, which acts as a gamma-aminobutyric acid-B receptor agonist. It is primarily indicated for the management of spasticity resulting from multiple sclerosis or spinal cord injuries. It is not the brand for methocarbamol. C. Amrix is the brand name for the extended-release formulation of cyclobenzaprine hydrochloride. It functions as a skeletal muscle relaxant by acting on the brainstem to reduce tonic somatic motor activity. It is not the proprietary name for methocarbamol. D. Robaxin is the brand name for methocarbamol, a central nervous system depressant with sedative and skeletal muscle relaxant properties. It inhibits polysynaptic reflex pathways in the spinal cord and subcortical areas. This medication is indicated for musculoskeletal pain relief.