✓ No active regulatory warningsFDA MedWatch, EMA EudraVigilance, WHO VigiBase, WADA Prohibited List · 2026-05-29
📰Read the full Ginger Root evidence review on GMJ News →Complete clinical article, references and updates on news.gmj.ge. This page is the structured safety summary.⚠ Pregnant patient self-treating with high-dose ginger (>1 g/day) — redirect to ≤1 g/day with OB notification [1]
⚠ Patient on warfarin using ginger supplements — monitor INR; culinary amounts OK [2]
⚠ Patient expecting fresh ginger tea to match clinical trial antiemetic doses — standardized extract needed [1]
⚠ Patient using ginger for severe hyperemesis gravidarum — ginger is for mild-moderate nausea; severe HG needs medical management [1]
🥗 Food first — build your daily Typical 250–1,000 mg
Check the foods you regularly eat — the bar fills toward your daily target.
Fresh ginger root (10 g slice)150 mg gingerols (approximate)
Dried ginger powder (1 tsp, ~2 g)100 mg gingerols (approximate)
Crystallized ginger (30 g)80 mg gingerols (approximate)
Ginger tea (1 cup, steeped 10 min)40 mg gingerols (approximate)
Check your regular foods above
🔬 Lab interpreter
Recommended test
No routine monitoring required
No routine monitoring required
Reference range / target
N/A
N/A
When to test
N/A
N/A
Monitor INR if patient is on warfarin + ginger supplements [2].
Full lab monitoring ↓⚕ For professionals — confirm ranges against your local laboratory.
Clinical verdict
Ginger is one of the best-evidenced botanical antiemetics, with Cochrane-level support for pregnancy nausea, CINV, and PONV. The key clinical decision is dose: ≤1 g/day in pregnancy (safety-established), up to 2 g/day for dysmenorrhea/OA. Use standardized extract (≥5% gingerols) for reliability. The anticoagulant interaction is clinically meaningful — flag for warfarin patients [1] [2].
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 data in children. Small doses of ginger tea are used traditionally for nausea in children >6 years. No standardized pediatric dosing established [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: Take with food to reduce GI irritation. For nausea, 30–60 minutes before exposure (travel, chemo) [1].
💊 With food: No specific fat requirement. Taking with food improves tolerability [1].
🚫 Avoid: Doses >4 g/day (increased GI side effects). High-dose ginger before surgery (bleeding risk). Ginger supplements + warfarin without INR monitoring [2].
2 Which form?
| Form | Bioavailability | Vegan | Cost |
|---|---|---|---|
| ['Dried ginger powder', 'common', 'Cheapest; standardized extracts preferred for clinical use. Variable gingerol content in food-grade powder [1].'] | Standard | Check label | |
| ['Standardized ginger extract (5% gingerols)', 'preferred', 'Consistent dosing. Most clinical trials use standardized extracts at 250 mg QID or 500 mg BID [1].'] | Standard | Check label | |
| ['Fresh ginger root', 'culinary', 'Approximately 1–2% gingerols by weight. A 10 g slice provides roughly 100–200 mg gingerols [1].'] | Standard | Check label | |
| ['Ginger essential oil', 'topical', 'Used in aromatherapy for nausea. Not for internal use in supplement form [2].'] | Standard | Check label | |
| ['Supercritical CO2 extract', 'concentrated', 'High gingerol/shogaol concentration. Used in some premium supplements [2].'] | Standard | Check label |
3 Common questions
Is ginger safe during pregnancy? ▼
Yes, at doses ≤1 g/day. Multiple systematic reviews and meta-analyses involving over 1,200 pregnant women have found no increase in adverse outcomes. It is one of the few botanical supplements with pregnancy safety data. However, always inform your obstetrician before use [1].
How does ginger compare with ondansetron for nausea? ▼
Fresh ginger vs supplements — which is better? ▼
For therapeutic antiemetic effects, standardized supplements deliver consistent gingerol doses. Fresh ginger in food provides modest amounts that may help mild nausea but are generally below the doses used in clinical trials (typically 250 mg extract 4×/day) [1].
Can ginger interact with blood thinners? ▼
Yes. Ginger inhibits thromboxane synthase and has antiplatelet activity. Patients on warfarin, aspirin, or clopidogrel should use ginger supplements only under medical supervision. Culinary amounts (a few grams in cooking) are generally not a concern [2].
4 Clinical evidence
Strong
Antiemetic efficacy: a Cochrane meta-analysis (12 RCTs, n=1,278) confirmed ginger significantly reduces nausea severity in CINV, pregnancy nausea, and PONV compared with placebo (RR 0.72, 95% CI 0.62–0.84) [1]. Pregnancy nausea: a meta-analysis of 6 RCTs (n=508) demonstrated superiority over placebo with no increase in adverse pregnancy outcomes at doses ≤1 g/day [1]. HIGH
Moderate
Dysmenorrhea: 3 RCTs (n=466) found 750–2,000 mg/day ginger powder reduced menstrual pain scores comparably to ibuprofen and mefenamic acid [2]. Osteoarthritis pain: a meta-analysis of 5 RCTs showed modest but significant pain reduction (SMD −0.30, 95% CI −0.50 to −0.09) [2]. Postoperative nausea: 1 g ginger preoperatively reduced PONV incidence by 28% vs placebo in a 5-RCT meta-analysis [1]. MODERATE
Insufficient
Migraine prevention: one pilot RCT (n=100) compared 250 mg ginger extract with sumatriptan; similar efficacy reported but study quality was low [2]. Anti-cancer activity: preclinical data on 6-shogaol are promising but no human trials exist [2]. Glycemic control in T2DM: 2 small RCTs with conflicting results [2]. LOW
5 Safety, toxicity & adverse events
Relative
⚠ Gallstones — ginger increases bile secretion
⚠ Concurrent anticoagulants — ginger has mild antiplatelet activity
⚠ Surgery — discontinue 7 days before
⚠ Pregnancy — generally safe for nausea at ≤1g/day, but avoid high doses near term (theoretical uterotonic)
🚩 Red flags
● Patient on anticoagulant therapy adding ginger supplements — monitor INR and bleeding signs [2]
● Pregnant patient using >1 g/day ginger — reduce to evidence-based safe range [1]
● Pre-surgical patient using ginger — discontinue 7–10 days before surgery [2]
6 Interactions
Drug interactions
Warfarin and heparin Major
Mechanism: Ginger inhibits thromboxane synthase; additive anticoagulation [2].
Effect: Elevated INR, increased bleeding risk [2].
Action: Monitor INR. Culinary use generally safe; supplement doses require supervision [2].
NSAIDs (ibuprofen, naproxen) Moderate
Mechanism: Overlapping COX/LOX inhibition; potential additive GI effects [2].
Effect: Theoretical increased GI bleeding risk when combined at high doses [2].
Action: May allow NSAID dose reduction. Monitor for GI symptoms [2].
Supplement synergies
Vitamin B6 (Pyridoxine) · 25 mg B6 TID + 250 mg ginger QID
ACOG recommends B6 + ginger as first-line for pregnancy nausea [1].
ACOG recommends B6 + ginger as first-line for pregnancy nausea [1].
Turmeric / Curcumin · 500 mg each, standardized extracts
Complementary anti-inflammatory pathways. Ginger (COX/LOX) + curcumin (NF-κB) [2].
Complementary anti-inflammatory pathways. Ginger (COX/LOX) + curcumin (NF-κB) [2].
7 Regulatory
United States (FDA): Ginger is GRAS (Generally Recognized as Safe) for food use. Available as a dietary supplement without pre-market approval. No FDA-approved health claims [1].
European Union (EFSA): Available as food supplement. EFSA has assessed ginger for traditional use claims. EMA monograph supports traditional use for nausea and digestive complaints [1].
WHO: Ginger is listed in WHO monographs as a traditional medicine for nausea and vomiting. Supported by clinical evidence [1].
Japan: Classified as a food ingredient and traditional Kampo medicine component (Shokyo/Kankyo) [1].
8 US supplement products
3
on-market products containing Ginger Root (NIH DSLD)
Brands carrying Ginger Root (2)
Click a brand to see its Ginger Root products.
9 Frequently paired with
10 Cite this page
Vancouver: Pkhakadze G. Ginger Root — safety profile [Internet]. Tbilisi: PHIG; 2026 [cited 2026 Aug 15]. Available from: https://supplement.ge/ingredients/ginger-root/
APA 7th: Pkhakadze, G. (2026). Ginger Root — Safety profile. Public Health Institute of Georgia. https://supplement.ge/ingredients/ginger-root/
📋 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: February 2027
References: 4 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 Root — Safety Profile." SupplementIndex, PHIG, 2026. https://supplement.ge/ingredients/ginger-root/ 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