Ginger and Reduced Vomiting Frequency

Research synthesisModerate evidenceLarge effect3 studies · 3 beneficial · 0 neutral · 0 harmful

All 3 available studies report beneficial effects of ginger on reducing vomiting frequency, with predominantly large effect sizes. The most commonly cited dose is up to 1 g/day, and the evidence spans populations including pregnant women with hyperemesis gravidarum and patients undergoing chemotherapy. All 3 studies found statistically significant reductions.

Effective dose range: approximately 1 g/day (up to 1 g/day for at least 4 days)
Studied populations: pregnant women (including those with hyperemesis gravidarum) and patients undergoing chemotherapy

Caveats: Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). Evidence base is small (only 3 studies) — conclusions should be considered preliminary. All studies are reviews or meta-analyses, and effect sizes varied from small to large, though predominantly large. The specific form of ginger was not consistently reported across studies.

Generated Jul 11, 2026

Doses used in studies

g/day: 1 (median 1, IQR 1–1) — 1 study

Safety in these studies

vomitingIncreased riskOR 0.30; 95% CI 0.12 to 0.79; p = 0.02; I2 = 36%
the ginger supplement intake group, which took not more than 1 g of ginger supplementation per day for above four days, had significantly less acute vomiting than the control group (OR 0.30; 95% CI 0.12 to 0.79; p = 0.02; I2 = 36%)
from: Effects of Ginger Intake on Chemotherapy-Induced Nausea and Vomiting: A Systematic Review
nauseaNo significant difference
no evidence of significant adverse effects
from: The Use of Ginger Bioactive Compounds in Pregnancy: An Evidence Scan and Umbrella Review o
nauseaNo significant differencep = 0.53 (acute), p = 0.31 (delayed)
the incidence of acute nausea (p = 0.53), the incidence of delayed nausea (p = 0.31) ... were not significantly different between the ginger supplement intake group and the control group
from: Effects of Ginger Intake on Chemotherapy-Induced Nausea and Vomiting: A Systematic Review
vomitingNo significant differencep = 0.09 (acute), p = 0.89 (delayed)
the incidence of acute vomiting (p = 0.09), and the incidence of delayed vomiting (p = 0.89) were not significantly different between the ginger supplement intake group and the control group
from: Effects of Ginger Intake on Chemotherapy-Induced Nausea and Vomiting: A Systematic Review
Overall tolerabilityReported
Ginger supplementation was well-tolerated with minimal side effects and no significant harm to maternal or fetal health.
from: Effectiveness of ginger supplementation in alleviating hyperemesis gravidarum: a systemati

3 of 3 papersPopulation:

Effects of Ginger Intake on Chemotherapy-Induced Nausea and Vomiting: A Systematic Review of Randomized Clinical Trials.
- 2022-11-23
- Meta-Analysis
- Nutrients 14(23)
- - Jihee Choi
  - Jounghee Lee
  - Kijoon Kim
  - Hyo-Kyoung Choi
  - Se-A Lee
  - Hae-Jeung Lee
- PubMed: 36501010
- DOI: 10.3390/nu14234982
2 Insights on
- Reduced Vomiting Frequency
- High evidence
- Rigorous Journal
the ginger supplement intake group, which took not more than 1 g of ginger supplementation per day for above four days, had significantly less acute vomiting than the control group (OR 0.30; 95% CI 0.12 to 0.79; p = 0.02)
Effect
Beneficial
Effect size
Large
Significant
Yes
Dose
not more than 1 g/day for above four days
Effectiveness of ginger supplementation in alleviating hyperemesis gravidarum: a systematic review and meta-analysis.
- 2025
- Review
- American journal of translational research 17(3)
- - Pei Gao
  - Beibei Chen
  - Luyao Wang
- PubMed: 40226035
- DOI: 10.62347/txkv6669
2 Insights on
- Reduced Vomiting Frequency
- Low evidence
- Clinical
A pooled odds ratio of 0.41 (95% CI: 0.22-0.79, P = 0.008) indicated a significant reduction in nausea and vomiting symptoms.
Effect
Beneficial
Effect size
Large
Significant
Yes
The Use of Ginger Bioactive Compounds in Pregnancy: An Evidence Scan and Umbrella Review of Existing Meta-Analyses.
- 2024-11
- Review
- Advances in nutrition (Bethesda, Md.) 15(11)
- - Kendra A Tiani
  - Cristina M Arenaz
  - Maureen K Spill
  - Margaret J Foster
  - Julie S Davis
  - Regan L Bailey
  - Martha S Field
  - Patrick J Stover
  - Amanda J MacFarlane
- PubMed: 39343171
- DOI: 10.1016/j.advnut.2024.100308
1 Insight on
- Reduced Vomiting Frequency
- Low evidence
- Pregnant Women
The majority of the MAs found a significant positive effect of ginger on the improvement of nausea in pregnancy compared with placebo, or equivalence to conventional treatments
Effect
Beneficial
Effect size
Small
Significant
Yes
Dose
dietary preparations of ginger

Ginger and Reduced Vomiting Frequency

Effects of Ginger Intake on Chemotherapy-Induced Nausea and Vomiting: A Systematic Review of Randomized Clinical Trials.

Effectiveness of ginger supplementation in alleviating hyperemesis gravidarum: a systematic review and meta-analysis.

The Use of Ginger Bioactive Compounds in Pregnancy: An Evidence Scan and Umbrella Review of Existing Meta-Analyses.