Treatment for Unretractable Nausea

First-Line Treatment Options

The National Comprehensive Cancer Network recommends starting with dopamine receptor antagonists, such as metoclopramide 10-20 mg PO/IV every 6 hours, as the initial treatment for persistent nausea 1, 2
Prochlorperazine 5-10 mg PO/IV every 6 hours is also a recommended first-line treatment for persistent nausea 3, 2
Haloperidol 0.5-2 mg PO/IV every 6-8 hours can be used as a first-line treatment for persistent nausea 1, 4
Administering medications on a scheduled basis rather than as-needed can help maintain therapeutic levels and improve treatment outcomes for persistent nausea 1, 5

The National Comprehensive Cancer Network recommends adding a 5-HT3 receptor antagonist, such as ondansetron 4-8 mg PO/IV every 8-12 hours, for nausea that persists despite first-line treatment 1, 2
Granisetron 1-2 mg PO daily or 1 mg PO twice daily can be used as an alternative 5-HT3 receptor antagonist 6
Adding a corticosteroid, such as dexamethasone 4-8 mg PO/IV daily, can enhance the antiemetic effect of other medications 1, 5, 6

For medication-induced nausea, reviewing and discontinuing unnecessary medications can help alleviate symptoms 1
Opioid rotation can be considered for patients experiencing opioid-induced nausea 1, 5
Treating medication-induced gastropathy with proton pump inhibitors can help alleviate symptoms 1

For nausea that remains uncontrolled despite other measures, considering continuous IV/SC infusion of antiemetics or trying combination therapy with medications from different classes may be necessary 1, 5
Alternative therapies, such as acupuncture, may be considered for patients with persistent nausea 1

Dietary modifications, such as eating small, frequent meals and avoiding trigger foods, can help alleviate nausea 2
Behavioral therapy techniques, such as guided imagery and hypnosis, can be used to help manage anticipatory nausea 2, 5

Starting with lower doses in elderly patients due to increased sensitivity to side effects is recommended 4
Monitoring for sedation with antihistamines and benzodiazepines, as well as being aware of the potential for 5-HT3 antagonists to cause constipation, is important 4
Metoclopramide carries a risk of extrapyramidal side effects, especially at higher doses 5
Avoiding abrupt discontinuation of benzodiazepines is recommended 4