Ginger extract: Evidence, Trial Doses & Interactions

About Ginger extract

A concentrated rhizome extract standardised to gingerols and shogaols, the pungent compounds of fresh and dried ginger respectively. Drying converts gingerols into shogaols, so dried and fresh preparations differ.

Ginger has an unusually good evidence position for a botanical in pregnancy-related nausea and in chemotherapy-associated nausea, where several meta-analyses point the same way. Its joint pain literature is weaker, and its cardiometabolic literature is dominated by small Iranian trials. Doses used vary from 250 mg of extract to 2 g of powder, which are not comparable.

Sold as

Standardised extract capsule, Dried powder, Fresh root, Tea, Crystallised ginger, Tincture

Standardised to

Commonly 5% gingerols, or a stated gingerol and shogaol content — a product without this marker may not resemble what was studied.

Also known as

Ginger root extract, Gingerol, Adrak, Shoga

What the research used

The amounts, forms and durations published trials of Ginger extract actually administered.

These are the amounts published trials administered — not a recommendation, and not a dose to copy. Trial participants were screened, supervised and given a characterised preparation. What is in a retail bottle is frequently not what was studied, and the amount that suits one person is not general advice.

Studied for Nausea in early pregnancy
1–1.5 g
Moderate
Dried powdered root, divided doses · 4 days to 3 weeks
Among the better-replicated botanical doses in this catalogue, though trials use different formulations and outcome scales. Doses above roughly 1.5 g per day were not usually tested in pregnancy.
Studied for Knee osteoarthritis
500–1000 mg
Limited
Standardised extract, divided doses · 3–12 weeks
Trials are small and short, and the effect sizes reported are modest against a placebo response that is large in pain research.
Studied for Blood glucose and lipids
1–3 g
Limited
Dried powder, divided doses · 8–12 weeks
Mostly small trials from a small number of centres, with pooled results sensitive to which studies are included.

This is general information about food, not medical advice. It cannot diagnose, treat or replace guidance from a clinician who knows your history.

When it was taken

Each window says whether a trial compared it against an alternative, or whether it is convention and pharmacology. Most timing advice is the second kind.

None of the timings below were directly compared in a trial. They reflect how the research happened to dose, or what the pharmacology implies — which is not the same as a timing being better.

With food
Not enough
Usually taken with or just before meals, both for tolerability and because nausea trials targeted mealtimes. Timing itself was not a compared variable.
Timing was not directly compared. This reflects convention or how the compound behaves in the body, not a trial showing this window works better.
Split through the day
Limited
Nausea protocols split the daily amount into three or four doses to maintain effect across the day.
Timing was not directly compared. This reflects convention or how the compound behaves in the body, not a trial showing this window works better.

What each association actually rests on, and the papers behind it. A rating describes the state of the research, not how promising the supplement sounds. How we rate evidence.

Digestive comfort

Gut & Digestive Health

Moderate evidence

Multiple randomised trials and meta-analyses report reduced nausea in early pregnancy compared with placebo, with effects on vomiting less consistent. Trials are small and heterogeneous, but they point the same way more reliably than most of this category.

What may be going on: Gingerols and shogaols act on serotonin 5-HT3 receptors and accelerate gastric emptying.

Moderate evidence. Several human studies point the same way, with real caveats.

View the 2 sources

Ginger (Zingiber officinale Rosc.) and its bioactive components are potential resources for health beneficial agents.(opens in a new tab)
Systematic review · Phytotherapy research : PTR · 2021 · PMID 32954562
Ginger on Human Health: A Comprehensive Systematic Review of 109 Randomized Controlled Trials.(opens in a new tab)
Systematic review · Nutrients · 2020 · PMID 31935866

Deep research mode adds each paper’s own conclusion and stated limitations.

Blood glucose response

Blood Sugar & Metabolic Health

Limited evidence

Pooled small trials report reductions in fasting glucose and HbA1c in type 2 diabetes. The trials are concentrated in a few centres and the pooled estimates are unstable, so this sits well short of established.

Limited evidence. Early human work, or mostly lab and animal research.

View the 3 sources

The effects of ginger intake on weight loss and metabolic profiles among overweight and obese subjects: A systematic review and meta-analysis of randomized controlled trials.(opens in a new tab)
Meta-analysis · Critical reviews in food science and nutrition · 2019 · PMID 29393665
Effect of Aromatic Herbs and Spices Present in the Mediterranean Diet on the Glycemic Profile in Type 2 Diabetes Subjects: A Systematic Review and Meta-Analysis.(opens in a new tab)
Meta-analysis · Nutrients · 2024 · PMID 38542668
Effect of ginger (Zingiber officinale) on semen quality.(opens in a new tab)
Systematic review · Andrologia · 2019 · PMID 31012134

Deep research mode adds each paper’s own conclusion and stated limitations.

Joint comfort

Joint Health

Limited evidence

Some trials report modest reductions in knee osteoarthritis pain. The effect is small, trials are short, and dropout from stomach upset was higher on ginger than placebo in several of them.

Limited evidence. Early human work, or mostly lab and animal research.

View the 1 source

Orally consumed ginger and human health: an umbrella review.(opens in a new tab)
Systematic review · The American journal of clinical nutrition · 2022 · PMID 35147170

Deep research mode adds each paper’s own conclusion and stated limitations.

Exercise recovery

Muscle & Physical Performance

Not enough evidence

Evidence is limited for ginger and muscle soreness after exercise. A few small trials report slightly lower pain ratings, with no consistent pattern.

Not enough evidence. Not enough human research to say anything useful yet.

View the 4 sources

Effects of Ginger Supplementation on Markers of Inflammation and Functional Capacity in Individuals with Mild to Moderate Joint Pain.(opens in a new tab)
Randomised controlled trial · Nutrients · 2025 · PMID 40732990
The Effect of Ginger and Mint on Postoperative Nausea and Vomiting in Patients Undergoing Total Thyroidectomy.(opens in a new tab)
Randomised controlled trial · Journal of perianesthesia nursing : official journal of the American Society of PeriAnesthesia Nurses · 2025 · PMID 40856681
The preventive and relieving effects of ginger on postoperative nausea and vomiting: A systematic review and meta-analysis of randomized controlled trials.(opens in a new tab)
Meta-analysis · International journal of nursing studies · 2022 · PMID 34700257
Zingiber officinale (ginger)--an antiemetic for day case surgery.(opens in a new tab)
Randomised controlled trial · Anaesthesia · 1993 · PMID 8214465

Deep research mode adds each paper’s own conclusion and stated limitations.

Things to know

Interactions, contraindications and dose limits, most serious first. Concentrated extracts interact with medication in ways the whole plant does not, so this section carries more weight here than it does on a food page.

Interaction
Bleeding risk with anticoagulants
Interacts withWarfarin, direct oral anticoagulants, aspirin, antiplatelet drugs
Ginger inhibits thromboxane synthesis and platelet aggregation, and case reports describe raised INR with warfarin. High-dose extract is commonly stopped one to two weeks before surgery.
Worth knowing
Heartburn and reflux
The most common complaint at supplemental doses is heartburn, belching and abdominal discomfort, which caused dropouts in several trials.
Interaction
Glucose-lowering and blood pressure medication
Interacts withInsulin, sulfonylureas, antihypertensives
Where ginger lowers glucose or blood pressure it may add to medication doing the same thing, so monitoring is sensible rather than assuming no interaction.
Worth knowing
Pregnancy dosing and gallstones
Ginger is widely used for nausea in pregnancy, but trials generally stayed at or below about 1.5 g per day and did not study higher intakes. It also increases bile flow, which matters with gallstones.

Ginger extract

What ginger extract may help with

About Ginger extract

What the research used

When it was taken

With food

Split through the day

The evidence in depth

Digestive comfort

Blood glucose response

Joint comfort

Exercise recovery

Things to know

Bleeding risk with anticoagulants

Heartburn and reflux

Glucose-lowering and blood pressure medication

Pregnancy dosing and gallstones

What ginger extract may help with

About Ginger extract

What the research used

When it was taken

🍽️With food

🔀Split through the day

The evidence in depth

Digestive comfort

Blood glucose response

Joint comfort

Exercise recovery

Things to know

Bleeding risk with anticoagulants

Heartburn and reflux

Glucose-lowering and blood pressure medication

Pregnancy dosing and gallstones

In the food catalogue

With food

Split through the day