system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A drug given for metoclopramide induced dystonic reaction is :
assistant
The correct answer is  "Acute muscle dystonia caused by antiemetic-antipsychotic drugs is promptly relieved by parenteral promethazine or hydroxyzine." This is based on the central anticholinergic action of the drugs.
Promethazine is a first-generation anti-histaminic which has a maximum penetration of blood-brain barrier and maxi­mum anticholinergic activity.