Ginger has been used for centuries as a culinary spice and traditional remedy. Today, it is commonly consumed as fresh ginger, tea, powder, capsules, extracts, and other dietary supplements.
Research suggests that ginger may help with certain types of nausea and vomiting and may provide some relief from menstrual cramps. However, “natural” does not automatically mean risk-free. Ginger can cause side effects and may interact with medications or medical conditions, particularly when consumed in concentrated supplement forms.
This does not mean that everyone needs to stop eating ginger. For most people, the amounts normally used in food are unlikely to cause serious problems. The greatest concern is generally with medicinal doses, extracts, and supplements.
What Is Ginger?
Ginger comes from the rhizome of the plant Zingiber officinale. It is widely used in cooking, beverages, teas, and traditional medicine.
Studies have investigated ginger for several purposes, including nausea and vomiting, menstrual cramps, and symptoms associated with osteoarthritis. However, the strength of the evidence varies depending on the condition and the type and amount of ginger used.
Ginger can also produce unwanted effects. Common side effects include:
- Heartburn
- Abdominal discomfort
- Diarrhea
- Gas
- Mouth or throat irritation
These effects are more likely to become noticeable with larger amounts or concentrated preparations.
Who Should Be Careful With Ginger?
1. People Taking Blood-Thinning or Antiplatelet Medication
One of the most important reasons to discuss ginger with a healthcare professional is the possibility of an interaction with medicines that affect blood clotting.
People taking medications such as warfarin or antiplatelet drugs should not assume that a ginger supplement is automatically safe. Clinical references note a potential concern about ginger and bleeding, although the strength of evidence for clinically significant interactions is not always clear.
This is particularly important if you already have a bleeding disorder or are taking several medications that affect clotting.
If you take a blood thinner, speak with your doctor or pharmacist before starting concentrated ginger supplements.
2. People Preparing for Surgery
If you are scheduled for surgery, tell your surgeon and anesthesia team about any herbal supplements you take.
Dietary supplements can sometimes affect bleeding, blood pressure, heart rate, or the way a person responds to medications used during surgery. For this reason, healthcare professionals may recommend stopping certain supplements before an operation.
Do not decide on your own when to stop a prescribed medication. Instead, ask your healthcare team specifically about ginger supplements and any other herbal products you use.
3. People With Gallstone Disease
People with gallstone disease should be cautious about using ginger medicinally.
NCCIH specifically notes that people with gallstone disease should avoid ginger in the context of complementary approaches for pregnancy-related nausea.
If you have been diagnosed with gallstones, ask your healthcare professional before using ginger regularly as a supplement or concentrated remedy.
4. People Who Are Pregnant
Ginger is sometimes used to help with nausea and vomiting during pregnancy, and research suggests it may be helpful for this purpose.
However, safety evidence is not conclusive for every situation, particularly when ginger is taken as a dietary supplement rather than as a normal food ingredient. NCCIH recommends discussing ginger supplements with a healthcare provider during pregnancy.
The same principle applies during breastfeeding: relatively little is known about the safety of ginger supplements while breastfeeding.
5. People Taking Multiple Medications
Herbal supplements can interact with prescription and over-the-counter medicines.
This does not mean ginger will necessarily interfere with your medication. Rather, it means that the combination should be evaluated based on your individual medications, doses, medical conditions, and the amount of ginger being consumed.
The concern is especially important for medications with a narrow therapeutic range, where relatively small changes in drug levels can sometimes have serious consequences.
If you regularly take prescription medication, ask your doctor or pharmacist before adding a concentrated ginger supplement to your routine.
What About Diabetes or Low Blood Sugar?
Ginger has been studied for its possible effects on blood sugar, and some research has suggested that it may modestly influence glucose levels.
That does not mean ginger should be used as a treatment for diabetes. If you have diabetes and take medication that lowers blood glucose, discuss regular use of high-dose ginger supplements with your healthcare professional.
The potential issue is greater when someone combines several products or supplements that may influence blood sugar.
Can Ginger Cause Stomach Problems?
Yes.
Although ginger is often promoted for digestive health and nausea, it can cause digestive symptoms in some people.
Possible side effects include:
- Heartburn
- Stomach discomfort
- Diarrhea
- Gas
- Burning or irritation in the mouth and throat
These reactions may be particularly noticeable when using powdered ginger, extracts, or larger doses.
If ginger consistently causes symptoms rather than relieving them, stop the supplement and discuss the symptoms with a healthcare professional.
Is Ginger Safe in Food?
For most people, ginger used in ordinary culinary amounts is generally well tolerated.
There is an important distinction between adding a small amount of fresh ginger to food and taking a concentrated ginger extract or supplement every day.
Many studies investigating potential health benefits have used dietary supplements rather than the small quantities normally found in food. Therefore, you should not automatically assume that a supplement has the same safety profile as culinary ginger.
Ginger Tea vs. Ginger Supplements
Ginger tea and fresh ginger are generally less concentrated than many capsules, extracts, and powdered supplements.
However, products vary considerably in strength. Two products marketed as “ginger supplements” may contain very different amounts of ginger or ginger extracts.
Before taking a supplement, check:
- The amount of ginger per serving.
- Whether it contains additional herbs or ingredients.
- The recommended daily serving.
- Any warnings or medication interactions listed on the label.
- Whether you actually need a concentrated supplement.
If you take prescription medication, professional advice is more important than simply following online dosage recommendations.
When Should You Stop Taking Ginger?
If you experience significant or persistent symptoms after taking ginger, stop using the supplement and contact a healthcare professional.
Seek urgent medical attention for symptoms such as:
- Unexplained or significant bleeding
- Vomiting blood
- Black or bloody stools
- Severe abdominal pain
- Difficulty breathing
- Swelling of the face, lips, tongue, or throat
- Severe dizziness or fainting
These symptoms can have many possible causes and should not automatically be attributed to ginger.
The Bottom Line
Ginger can be a useful food and, for some conditions, may offer modest health benefits. But it is not appropriate to assume that every ginger product is safe for every person.
Extra caution is appropriate if you:
- Take blood-thinning or antiplatelet medication
- Have a bleeding disorder
- Have gallstone disease
- Are preparing for surgery
- Are pregnant or breastfeeding
- Take several prescription medications
- Have a medical condition affected by blood sugar or other physiological changes
For most healthy adults, eating normal amounts of ginger as part of a balanced diet is unlikely to be a major concern. The bigger issue is the use of high-dose supplements and concentrated extracts, especially when combined with medications or certain medical conditions.
Before starting any herbal supplement for a medical condition, talk with your doctor or pharmacist. A natural product can still have biological effects—and those effects can sometimes interact with medicines or existing health problems.
Medical Disclaimer
This article is for educational and informational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. If you have a medical condition, take prescription medication, are pregnant or breastfeeding, or are preparing for surgery, consult a qualified healthcare professional before using ginger supplements.