This is a protocol for a Cochrane Review (Intervention). The objectives are as follows:

To evaluate the efficacy and adverse events (both minor and serious) associated with the use of haloperidol for the treatment of nausea and vomiting in palliative care patients. Possible adverse events include sedation, movement disturbance and arrhythmias. Neuroleptic malignant syndrome is a more serious but less common adverse event. This has numerous features including fever, altered consciousness and muscle rigidity and can be fatal (Susman 2001).