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
Serotonin syndrome may be precipitated by all of the following medications, except: 
Select and explain. 
A. Chlorpromazine, B. Pentazocine, C. Buspirone, D. Meperidine
A: Chlorpromazine
Answer: A: Chlorpromazine 
Explanation: Chlorpromazine is used in the treatment of serotonin syndrome. It is a potent 5HT2 receptor antagonist and can reduce the level of serotonin thereby useful in serotonin syndrome. Ref: The Diagnosis of Psychosis By Rudolf Cardinal, Edward Bullmore, Page 125; Blackwell's Five-Minute Veterinary Consult Clinical Companion, Page 234.