Ondansetron indications include nausea and vomiting, and may be used prophylactically with narcotics.

• A. Pain management
• B. Nausea and vomiting; may be used prophylactically with narcotics
• C. Sedation
• D. Nausea only

Answer: (B)

Ondansetron is an antiemetic used to prevent and treat nausea and vomiting. It can be given prophylactically with narcotics to counteract opioid-induced nausea and vomiting, which is why this option is the best fit. It is not a pain medication or a sedative, and its use is for both nausea and vomiting, not just nausea alone.