Final answer:
The antidote for Alprazolam overdose is Flumazenil. It acts as a benzodiazepine antagonist, reversing the sedative and anxiolytic effects of benzodiazepines like Alprazolam.
Step-by-step explanation:
The antidote for Alprazolam, a benzodiazepine, is c. Flumazenil. Flumazenil is a benzodiazepine antagonist and is used to counteract the effects of benzodiazepines in cases of overdose or to reverse their effects for medical procedures. It competes with benzodiazepines for the same receptor sites and thereby reverses their sedative and anxiolytic effects.
As additional information, drug antidotes are important in emergency situations. For instance, Physostigmine is used as an antidote for atropine poisoning, acting as a muscarinic agonist. Epinephrine is the drug used to counteract the effects of anaphylactic shock, which is a severe allergic reaction.
Lastly, drugs with anti-anxiety effects are often referred to as anxiolytics or, in this specific class of drugs, benzodiazepines, which includes Alprazolam.