This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Tiazinadine is - 
Select and explain. 
A. GABAA agonist, B. Central alpha2 agonist, C. Anti-muscarinic agent, D. GABAB agonist
B: Central alpha2 agonist
Answer: B: Central alpha2 agonist 
Explanation: 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.