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📰Read the full Ginger Extract evidence review on GMJ News →Complete clinical article, references and updates on news.gmj.ge. This page is the structured safety summary.⚠ Pregnant woman with NVP — ginger 250 mg QID is ACOG first-line before pharmacotherapy [3]
⚠ Pre-surgical patient — stop ginger supplements 2 weeks before (antiplatelet) [1]
⚠ Dysmenorrhea — 250 mg QID may equal NSAIDs in some trials [2]
⚠ Fresh ginger: 1 inch ≈ 5 g fresh ≈ 1 g dried equivalent [1]
ℹ️ Not obtained from food. Not applicable — this is not obtained from food in meaningful amounts; supplementation is the practical route.
🔬 Lab interpreter
Recommended test
No routine monitoring
No routine monitoring
Reference range / target
N/A
N/A
Clinical symptom assessment [1].
Full lab monitoring ↓⚕ For professionals — confirm ranges against your local laboratory.
Clinical verdict
Ginger is one of the best-evidenced botanical anti-emetics — ACOG-endorsed for pregnancy nausea at ≤1 g/day. Meta-analyses positive for NVP (12 RCTs), CINV, motion sickness, and dysmenorrhea. Mechanism: 5-HT3 receptor antagonism (same as ondansetron). Antiplatelet effects — stop 2 weeks before surgery. Fresh ginger in cooking provides therapeutic levels [1] [2] [3].
1 How much do I need?
👤 Adults: Specific dosage data under clinical review
👴 Elderly: Specific dosage data under clinical review
🤰 Pregnancy: Specific dosage data under clinical review
👦 Pediatric: See guidance
Limited formal data but traditionally used for children's nausea. Generally considered safe at appropriate doses [1].
🏃 Athletes: Standard dose
⚖️ Obesity: Standard dose
Fat-soluble compounds may require dose adjustment in obesity.
🩺 Renal: Consult specialist
Dose adjustment may be needed in renal impairment.
🌱 Vegan: Standard dose
How to take
🍽 Timing: Before or with meals. For NVP: divided doses throughout the day. For motion sickness: 30 min before travel [1] [3].
💊 With food: Can be taken with or without food. Food may reduce GI irritation [1].
🚫 Avoid: High doses (>4 g/day) during pregnancy without medical supervision. Anticoagulants without monitoring. 2 weeks before surgery [1].
2 Which form?
| Form | Bioavailability | Vegan | Cost |
|---|---|---|---|
| ['Standardized ginger extract', 'preferred', 'Standardized to 5% gingerols or equivalent. Used in clinical trials [2].'] | Standard | Check label | |
| ['Dried ginger powder', 'common', 'Standard cooking/supplement form. 1–2 g/day [1].'] | Standard | Check label | |
| ['Fresh ginger root', '', 'Culinary use. ~1 inch piece ≈ 5 g fresh ≈ 1 g dried equivalent [1].'] | Standard | Check label | |
| ['Crystallized/candied ginger', '', 'Popular for motion sickness. Contains sugar [1].'] | Standard | Check label |
3 Common questions
Is ginger safe during pregnancy? ▼
Yes — ACOG endorses ginger at ≤1 g/day for NVP. Meta-analysis of 12 RCTs confirms safety: no increased malformations, stillbirths, or preterm births [3]. It is the most studied herbal medicine in pregnancy.
Is ginger as good as ondansetron for nausea? ▼
For pregnancy nausea: ginger is first-line (non-pharmacological). Ondansetron (Zofran) is more potent but has safety concerns in pregnancy (QT prolongation, possible cleft palate risk). Ginger is recommended before ondansetron [3]. For chemo nausea: ginger is adjunctive, not replacement for 5-HT3 antagonists.
Fresh vs dried vs extract? ▼
All are effective. Fresh ginger has more gingerols; dried has more shogaols (both active). Standardized extracts are most consistent for dosing [2]. Culinary ginger (1 inch fresh ≈ 1 g dried) provides therapeutic levels.
Does ginger thin blood? ▼
Mildly. Gingerols inhibit thromboxane synthase, producing antiplatelet effects. Clinically significant only at high doses or combined with other antiplatelet agents. Discontinue supplements 2 weeks before surgery [1].
4 Clinical evidence
Strong
Pregnancy nausea: meta-analysis of 12 RCTs (n=1,278) confirmed ginger is superior to placebo for NVP. ACOG endorses ginger as non-pharmacological first-line option [3]. 5-HT3 receptor antagonism mechanism well-established [2]. HIGH
Moderate
Chemotherapy-induced nausea: meta-analysis showed ginger reduced CINV severity when added to standard antiemetics [2]. Osteoarthritis: meta-analysis of 5 RCTs showed modest pain reduction [2]. Motion sickness: some positive trials [1]. Dysmenorrhea: 250 mg QID as effective as NSAIDs in some trials [2]. MODERATE
Insufficient
5 Safety, toxicity & adverse events
Relative
⚠ High doses with anticoagulants/antiplatelets — bleeding risk
⚠ Gallstones — increases bile flow
⚠ Discontinue high doses before surgery
⚠ High doses in late pregnancy — use culinary amounts
🚩 Red flags
● Pre-surgical patient on ginger supplements — stop 2 weeks before [1]
● Patient on anticoagulants + high-dose ginger — bleeding risk [1]
6 Interactions
Drug interactions
Anticoagulants/antiplatelets Moderate
Mechanism: Gingerols inhibit thromboxane synthase, producing antiplatelet effects. [1]
Effect: Additive bleeding risk. [1]
Action: Monitor for bleeding. Discontinue 2 weeks before surgery [1].
Diabetes medications Minor
Mechanism: Ginger may modestly lower blood glucose. [2]
Effect: Additive glucose lowering. [2]
Action: Monitor blood glucose [2].
Supplement synergies
Turmeric / Curcumin · 500 mg curcuminoids
Synergistic anti-inflammatory effects (different mechanisms) [1].
Synergistic anti-inflammatory effects (different mechanisms) [1].
Peppermint Oil · 0.2–0.4 mL enteric-coated peppermint oil
Complementary GI motility and anti-nausea effects [1].
Complementary GI motility and anti-nausea effects [1].
7 Regulatory
United States (FDA): GRAS as food. Dietary supplement [1].
ACOG: Endorsed for pregnancy nausea at ≤1 g/day [3].
Germany (Commission E): Approved for dyspepsia and motion sickness prevention [1].
European Union (EMA): 'Well-established use' for motion sickness prevention; 'traditional use' for other GI complaints [1].
South Korea: Food and dietary supplement.
8 US supplement products
3
on-market products containing Ginger Extract (NIH DSLD)
Brands carrying Ginger Extract (1)
Click a brand to see its Ginger Extract products.
9 Frequently paired with
10 Cite this page
Vancouver: Pkhakadze G. Ginger Extract — safety profile [Internet]. Tbilisi: PHIG; 2026 [cited 2026 Jul 12]. Available from: https://supplement.ge/ingredients/ginger-extract/
APA 7th: Pkhakadze, G. (2026). Ginger Extract — Safety profile. Public Health Institute of Georgia. https://supplement.ge/ingredients/ginger-extract/
📋 Editorial information
Author: Prof. G. Pkhakadze, MD, MPH, PhD
Institution: Public Health Institute of Georgia (PHIG)
Affiliation: David Tvildiani Medical University (DTMU)
First published: January 2026
Last reviewed: 2026-05-29
Next review: January 2027
References: 3 cited sources
COI: SupplementIndex receives no funding from supplement manufacturers. All content independently authored by PHIG.
Process: Systematic literature review
📄 License & reuse
Published under Creative Commons Attribution 4.0 International (CC BY 4.0). You may share and adapt for any purpose with attribution.
Pkhakadze G. "Ginger Extract — Safety Profile." SupplementIndex, PHIG, 2026. https://supplement.ge/ingredients/ginger-extract/ CC BY 4.0.
GP
Prof. G. Pkhakadze, MD, MPH, PhD
Professor of Public Health · Head of Department, DTMU
Editor-in-Chief, Georgian Medical Journal (ISSN 3088-4322)
Chair, Public Health Institute of Georgia · UEMS Public Health Section
Educational and public health purposes. CC BY 4.0. Consult your healthcare provider before starting any supplement. Corrections: info@accreditation.ge. Publisher: PHIG