Acupuncture for Chemotherapy-Induced Nausea and Vomiting: An Evidence Review

The pooled evidence supports a clinically relevant adjunctive effect, particularly for acute vomiting. The 2006 Cochrane review by Ezzo and colleagues found that acupuncture-point stimulation reduced the proportion of patients experiencing acute vomiting after chemotherapy, with electroacupuncture producing the most consistent benefit. The 2017 Society for Integrative Oncology clinical practice guideline, endorsed by the American Society of Clinical Oncology, recommends acupuncture as an adjunct to standard antiemetic therapy. Acupuncture does not replace 5-HT3 antagonists, NK1 antagonists, or dexamethasone — it complements them.

The primary antiemetic point is PC6 (Nèiguān, 内关), located two cun proximal to the wrist crease between the tendons of palmaris longus and flexor carpi radialis. The 2015 Cochrane review by Lee and colleagues, pooling 59 trials and over 7,600 patients in the postoperative setting, demonstrated that PC6 stimulation — whether by acupuncture, acupressure, electrostimulation, or wristbands — significantly reduced both nausea and vomiting compared with sham. The same mechanistic and clinical rationale underpins its use in chemotherapy-induced nausea, although the trial base for CINV is smaller.

For PC6 stimulation specifically, the Cochrane meta-analysis found no statistically significant difference between invasive needling and non-invasive acupressure or wristband stimulation for postoperative nausea outcomes. This is clinically useful: patients receiving chemotherapy who are immunocompromised, thrombocytopenic, or simply unwell may be offered PC6 acupressure wristbands as a low-risk self-administered intervention with a credible mechanistic and evidence base.

Acupuncture is generally well tolerated in oncology populations when delivered by an appropriately trained practitioner. Standard cautions include avoidance of needling through cellulitis, lymphoedematous limbs, or recently irradiated skin; particular care with patients whose platelet counts are below 50 × 10⁹/L or whose absolute neutrophil counts are below 1 × 10⁹/L; and coordination with the treating oncology team. Sterile single-use needles and aseptic technique are non-negotiable. The 2013 Garcia review found acupuncture safety in cancer populations comparable to that in general populations when these precautions are observed.