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
DOC for Cisplatin induced nausea & vomiting occuring within 24 hours is 
Select and explain. 
A. Aprepitant, B. Fosaprepitant, C. Ondansetron, D. Promethazine
C: Ondansetron
Answer: C: Ondansetron 
Explanation: DOC for Cisplatin induced nausea & vomiting within 24 hours is Ondansetron.
DOC for Cisplatin induced nausea & vomiting after 2days is Aprepitant.