A 60 yr old lady with breast CA

A 60 yr old lady is diagnosed to have breast CA and receiving a course of chemotherapy. She is experiencing troublesome vomiting which has not been helped by domperidone.

What is the most appropriate next course of action?

A. Add an antihistamine
B. Add a dopamine receptor antagonist
C. Add a 5HT3 antagonist
D. Add a 5HT2 antagonist
E. Add a phenothiazine


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