<prompt> Tiazinadine is -GABAA agonistCentral alpha2 agonistAnti-muscarinic agentGABAB agonist  <response>: Ans. is b i.e., Central alpha2 agonist o Tizanidine is Central a2 adrenergic agonist - inhibits release of excitatory amino acids in the spinal interneurones. 