This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
All is true about flumazenil except: 
Select and explain. 
A. Antagonist of benzodiazepines, B. Treat barbiturate poisoning, C. Given intravenously, D. Act GABA channel
B: Treat barbiturate poisoning
Answer: B: Treat barbiturate poisoning 
Explanation: Ans. B. Treat barbiturate poisoningFlumazenil is the competitive antagonist of benzodiazepines receptor. It acts as specific antidote of benzodiazepines poisoning. It is given intravenously and it inhibits GABA facilitatory action.