Which medication is used to reverse the effects of benzodiazepines?

Flumazenil is the medication specifically designed to reverse the effects of benzodiazepines. It works as a competitive antagonist at the benzodiazepine receptor site of the GABA-A receptor, effectively displacing benzodiazepines and reversing their sedative effects. This makes flumazenil particularly valuable in emergency situations where a patient has overdosed on benzodiazepines and requires immediate intervention to restore normal respiratory function and consciousness.

Other medications listed do not serve this purpose. Naloxone, for example, is primarily used to reverse opioid overdoses, while atropine is an anticholinergic agent often used to treat bradycardia or organophosphate poisoning. Warfarin is an anticoagulant, not related to the reversal of any sedatives. Therefore, flumazenil is the correct and specific choice for reversing benzodiazepine effects in clinical practice.