2023 MASCC/ESMO consensus antiemetic guidelines related to integrative and non-pharmacological therapies.

Purpose: Review the literature to propose suggestions or recommendations for controlling nausea and vomiting through integrative and non-pharmacological treatments for the MASCC/ESMO 2023 update of its antiemetic guidelines.

Methods: The authors identified available systematic reviews and/or meta-analyses for 12 integrative therapies, including acupressure, acupuncture, auricular therapy, electrical stimulation of point PC6, ginger use (i.e., Zingiber officinale), guided imagery, hypnosis, inhalation aromatherapy, music therapy, food-based interventions, progressive muscle relaxation, and reflexology. Reviews were assessed for quality through the AMSTAR2 tool. A consensus committee reviewed recommendations as per MASCC/ESMO established processes.

Results: Thirty-nine systematic reviews and/or meta-analyses were used. There were major methodological flaws for many of the trials used as the bases for the reviews. No recommendation for ingested ginger could be made because of conflicting evidence. Recommendations were possible for acupuncture/electroacupuncture treatments, food-based interventions, and progressive muscle relaxation training alone or combined with guided imagery. No recommendations could be reached for a number of food-based approaches, inhalation aromatherapy, hypnosis in adults, music therapy, and reflexology.

Conclusion: While a limited number of suggestions are provided, there is a need for significantly higher quality trials in many of the therapeutic approaches assessed, before stronger recommendations and a wider range of approaches are made.