Ginger tea is primarily used to ease nausea, calm digestive discomfort, and reduce inflammation. It’s one of the most widely consumed herbal teas in the world, and unlike many folk remedies, its benefits have held up under clinical scrutiny. The active compounds responsible for most of these effects are gingerols, the pungent molecules naturally present in fresh ginger root.
Nausea and Motion Sickness
The most common reason people reach for ginger tea is to settle their stomach. Gingerols interact with receptors in the digestive tract that influence nausea signals, which is why ginger works for several different types of nausea rather than just one.
For motion sickness specifically, the evidence is striking. In a controlled study of 60 pilots exposed to a vestibular illusion demonstrator (a device that induces motion sickness), 63% of those given a placebo experienced symptoms compared to only 30% of those given one gram of ginger. That’s roughly half the rate of motion sickness from a small dose. If you’re prone to carsickness or seasickness, drinking a cup of ginger tea 20 to 30 minutes before travel can make a real difference.
Ginger tea is also commonly used for morning sickness during pregnancy. While there are no formal guidelines from major medical bodies on a specific safe dosage for pregnant women, ginger has been widely studied in pregnancy without evidence of harm at typical dietary amounts. A cup or two of ginger tea falls well within what most practitioners consider reasonable.
Menstrual Cramp Relief
A systematic review of 60 studies found that ginger relieved menstrual pain more effectively than placebo, and here’s the surprising part: there was no significant difference between ginger and standard anti-inflammatory painkillers like ibuprofen. For people who prefer to avoid medication or want something to complement it, ginger tea during the first few days of a period can meaningfully reduce cramping. The effect comes from ginger’s ability to block the same inflammatory pathways that drugs like ibuprofen target.
Inflammation and Joint Pain
Ginger’s anti-inflammatory properties extend well beyond period cramps. A meta-analysis of randomized controlled trials found that ginger supplementation significantly reduced three key markers of inflammation in the blood: C-reactive protein (a general inflammation marker), interleukin-6, and TNF-alpha. These are the same markers that rise in conditions like arthritis, metabolic syndrome, and chronic pain disorders.
Both gingerols in fresh ginger and shogaols in dried ginger contribute to this effect. Shogaols form when gingerols are exposed to heat or drying, which means dried ginger and long-steeped tea contain a slightly different balance of active compounds than fresh ginger. Both forms are effective, but dried ginger tends to taste sharper and more pungent.
Blood Sugar Management
For people with type 2 diabetes, ginger supplementation has shown a measurable effect on blood sugar control. A meta-analysis of randomized controlled trials found that ginger reduced fasting blood sugar by an average of about 19 mg/dL and lowered HbA1c (a measure of blood sugar over the previous two to three months) by 0.57 percentage points. That HbA1c reduction is modest but clinically meaningful, roughly comparable to what some people achieve through dietary changes alone. The same analysis also found small but significant reductions in blood pressure.
Ginger tea on its own won’t replace diabetes management, but as a zero-calorie drink that actively supports blood sugar regulation, it’s a smart swap for sugary beverages.
How to Make It for Maximum Benefit
The simplest method is to slice fresh ginger root into thin pieces, which maximizes the surface area for extracting gingerols and essential oils. Use about one to two inches of root per cup. Pour boiling water (100°C) directly over the slices, cover the cup, and steep for at least two to four minutes. If you want a stronger, spicier brew with more active compounds, steep for up to 10 minutes. Covering the cup while steeping helps retain the volatile oils that would otherwise evaporate.
You can also use dried ginger powder, about half a teaspoon per cup, though the flavor profile will be hotter and less citrusy than fresh. Adding lemon or honey is fine and doesn’t diminish the active compounds.
Side Effects and Limits
Ginger tea is safe for most people, but overdoing it causes problems. Side effects like heartburn, acid reflux, diarrhea, and gas typically appear when intake exceeds about 6 grams of ginger per day. For context, a typical cup of ginger tea made with a one-inch piece of root contains roughly 1 to 2 grams, so you’d need to drink several strong cups daily to hit that threshold.
One interaction worth knowing about: ginger inhibits a substance that helps blood clot, which means it can increase bleeding risk. If you take blood-thinning medications, regular ginger tea consumption is something to discuss with your prescriber. This doesn’t mean a single cup is dangerous, but daily use alongside anticoagulants could amplify the drug’s effect.
People with gallstones should also use caution, since ginger stimulates bile production and could trigger symptoms.