Can Ginger and Cinnamon Be Taken Together?

Ginger and cinnamon are safe to combine for most healthy people, and cultures across Asia and the Middle East have been pairing them in food and medicine for centuries. Animal studies suggest the two spices may even work better together than alone for certain effects, particularly reducing inflammation and oxidative stress. The combination does carry real risks, though, for people on blood-thinning medications and for those consuming large amounts of the wrong type of cinnamon.

A Long Shared History

Ginger and cinnamon are not just incidentally paired in chai, gingerbread, and stir-fries. Historical records suggest their combined use stretches back to the ancient Silk Road trade routes, where Persian and Chinese medical traditions developed knowledge of cinnamon and ginger in tandem.¹ Traditional Chinese medicine, Ayurveda, and Middle Eastern folk medicine all feature the pair together, typically for warming the body, aiding digestion, and easing pain. Modern research has started to test whether those traditional pairings have a basis in biology, and the findings so far are encouraging if still mostly preliminary.

Synergistic Effects on Inflammation and Oxidative Stress

The most interesting laboratory evidence for combining ginger and cinnamon involves their joint effect on inflammation. In a study on diabetic rats, administering ginger and cinnamon extracts together produced stronger antioxidant, anti-inflammatory, and blood-sugar-lowering effects than either spice given alone. The researchers described this as a genuine synergism rather than just an additive effect.² That same study found the combination protected brain tissue from diabetes-related damage more effectively than either spice on its own.

Separately, a mouse study on intestinal inflammation found that a high-dose ginger-cinnamon mixture reduced markers of gut inflammation to levels close to those of healthy control animals. The combination suppressed key inflammatory signaling molecules and an enzyme associated with tissue damage in the intestinal lining.³ These are animal studies, so you cannot assume the same magnitude of benefit in humans, but the consistency of the findings across different disease models is noteworthy.

What the Combination Does for Gut Bacteria

Beyond calming inflammation in the gut, ginger and cinnamon appear to reshape which bacteria thrive there. A human dietary study found that daily consumption of cinnamon and ginger boosted populations of bacteria known to produce short-chain fatty acids, which are compounds that feed the cells lining the colon and help regulate immune responses throughout the body. Specifically, acetate production went up by about a quarter and butyrate by roughly a fifth.⁴ Butyrate in particular is considered protective against colorectal inflammation and has been linked to better metabolic health. This prebiotic-like effect gives a plausible biological explanation for why the pairing has been used for digestive complaints in traditional medicine for so long.

Blood Sugar and Metabolic Health

If you have seen claims that ginger and cinnamon together are a powerful natural remedy for diabetes, the human evidence is less convincing than the animal data. A clinical trial in people with type 2 diabetes tested cinnamon, ginger, saffron, and cardamom against placebo. The herbal products did not produce significant improvements in blood sugar control, body measurements, inflammation, or oxidative stress when compared to placebo. Only cinnamon, when analyzed on its own within the group that took it, showed a drop in fasting blood sugar, and that was a within-group comparison, not the more rigorous head-to-head test against placebo.⁵

The animal research paints a rosier picture. The diabetic rat study mentioned earlier did find a meaningful blood-sugar-lowering effect from the ginger-cinnamon combination.² The gap between encouraging animal findings and underwhelming human trial results is a common pattern in nutrition research, and it means you should treat dramatic blood sugar claims about this spice duo with healthy skepticism. Sprinkling cinnamon and ginger into your diet is unlikely to replace medication for anyone managing diabetes.

Menstrual Pain Relief

One area where both spices have stronger human evidence is menstrual cramps. A systematic review and meta-analysis of randomized controlled trials found that both cinnamon and ginger individually reduced pain intensity from primary dysmenorrhea compared to placebo, with ginger showing a somewhat larger effect size.⁶ So each one works on its own for this purpose.

A separate trial tested the two combined. Women who took a cinnamon-and-ginger supplement alongside exercise saw greater reductions in the intensity and duration of menstrual pain as well as physical and psychological PMS symptoms compared to either the spice combination alone or exercise alone.⁷ The combination therapy outperformed the individual approaches. This is one of the few areas where combining the two spices has been directly tested in humans with positive results, though more trials are needed before drawing firm conclusions.

The Serious Risk With Blood Thinners

Here is where the conversation shifts from “probably helpful” to “potentially dangerous.” Both ginger and cinnamon have mild blood-thinning properties on their own. Combined, they can amplify the effects of anticoagulant medications to a dangerous degree. A case report describes an 80-year-old man on dabigatran, a commonly prescribed blood thinner, who began drinking a boiled mixture of ginger and cinnamon. Three days later, he presented with vomiting blood and black stool. Despite aggressive treatment including a reversal agent for the anticoagulant, the bleeding could not be controlled and he died within 24 hours.⁸

The risk is not limited to dabigatran. A review of food and herbal interactions with oral anticoagulants found that ginger, even in small quantities (excluding negligible amounts in commercial ginger-flavored drinks), can amplify the blood-thinning effects of warfarin.⁹ Cinnamon adds to that antiplatelet activity. If you take any anticoagulant or antiplatelet drug, including warfarin, dabigatran, rivaroxaban, apixaban, or even daily aspirin, talk to your doctor before regularly consuming concentrated ginger and cinnamon, whether as supplements, strong teas, or medicinal preparations. Small amounts used in cooking are generally not the concern here. The risk scales with dose and concentration.

Which Cinnamon You Use Matters

Not all cinnamon is the same, and the difference is medically relevant. What most grocery stores sell as “cinnamon” is actually cassia, a cheaper relative of true Ceylon cinnamon. Cassia contains substantially higher levels of coumarin, a compound known to cause liver damage in animal studies and probably in humans at high enough doses. European health agencies have warned against consuming large amounts of cassia for this reason.¹⁰

If you plan to consume cinnamon regularly or in therapeutic amounts rather than just a pinch in baking, choosing Ceylon cinnamon over cassia can significantly reduce your coumarin exposure. Ceylon cinnamon has a milder, more complex flavor and is typically labeled as “true cinnamon” or “Sri Lankan cinnamon.” It costs more, but for daily use, the reduced liver risk is worth the premium. This is especially relevant when you are combining cinnamon with ginger in concentrated teas or supplements, where the dose is higher than what you would get from a cookie.

Caution During Pregnancy

Ginger is widely used to treat morning sickness, and at typical dietary amounts it appears safe during pregnancy, with studies to date showing no association with fetal harm. However, there is no scientific consensus on what forms, doses, and duration of ginger are both effective and safe for the developing fetus. Some European regulatory bodies, including agencies in Finland and Denmark, have historically cautioned against medicinal ginger supplements during pregnancy, and the European Medicines Agency recommended in 2012 that powdered ginger products be avoided during pregnancy and lactation as a precaution.¹¹

Cinnamon in food amounts is generally considered safe during pregnancy, but high-dose supplements have not been well studied in pregnant women. The coumarin concern mentioned above becomes more relevant during pregnancy, when liver function is already under additional strain. The practical takeaway: using both spices as seasonings in food is almost certainly fine. Taking concentrated supplements of either, or brewing strong medicinal teas, warrants a conversation with your healthcare provider. Establish that caution once and it applies throughout pregnancy.

How Cooking Changes What You Actually Get

If you are adding ginger and cinnamon to food, how you prepare them changes the bioactive compounds you end up consuming. Ginger’s main active compounds, gingerols, convert to a different class of compounds called shogaols when heated. The conversion increases with temperature and time, and moist heat (boiling, steaming) drives it much more efficiently than dry heat (baking, toasting). The highest conversion rates in one study were achieved at 120°C with moist heat for extended periods.¹² Shogaols are actually more potent anti-inflammatory and antioxidant agents than gingerols, so simmering ginger in a tea or soup may increase, not decrease, some of its beneficial activity.

However, the picture is not uniformly positive for heat. A broader review of thermal processing found that traditional cooking and microwaving generally decreased the overall antioxidant activity of ginger, while frying, autoclaving, and sun-drying tended to increase it.¹³ The practical upshot: a slow-simmered ginger-cinnamon tea likely concentrates certain anti-inflammatory compounds, while adding both spices late in cooking to a stir-fry or curry preserves more of their original antioxidant profile. Neither approach is wrong; they just deliver a somewhat different chemical mixture.

Exercise, Soreness, and Athletic Performance

A pair of studies in female athletes tested ginger and cinnamon supplements over six weeks. One found that ginger significantly reduced exercise-induced muscle soreness compared to placebo, and cinnamon also produced a meaningful reduction in soreness, though neither spice significantly lowered the inflammatory marker IL-6 compared to placebo.¹⁴ A companion study looking at oxidative stress, body composition, and exercise performance found no significant differences between ginger, cinnamon, and placebo groups over the same period.¹⁵

These results are a good illustration of a pattern with ginger and cinnamon research in general: anti-inflammatory and pain-related outcomes tend to show more consistent benefits than metabolic or performance outcomes. If you are adding these spices to a post-workout smoothie hoping for less soreness the next day, there is some basis for that. If you are hoping they will change your body composition or boost your VO2 max, the evidence does not support it.

Practical Amounts and Forms

Research studies vary widely in their dosing. Culinary use, meaning the amount you would add to a cup of tea, a bowl of oatmeal, or a curry, typically involves half a teaspoon to a teaspoon of ground ginger and a similar amount of cinnamon. This is well within safe ranges for healthy adults and is the context in which combining the two poses essentially no risk. Supplement capsules can deliver much higher doses, and concentrated extracts push higher still. The risk of side effects, including stomach upset from ginger and coumarin exposure from cassia cinnamon, climbs with dose.

How you consume these spices also affects what your body actually absorbs. Bioactive compounds from both ginger and cinnamon interact with the food they are combined with. Fats can improve the absorption of certain fat-soluble compounds, while fiber may bind some polyphenols and reduce their availability. Combining the spices with a food that contains some fat, like yogurt or a curry cooked in oil, is likely to improve absorption compared to taking them in plain water. This is consistent with how traditional cuisines tend to use them: stirred into milk-based drinks, cooked into sauces, or baked into foods with butter or oil.

Who Should Be Especially Careful

Most people can enjoy ginger and cinnamon together without concern, but a few groups need to pay attention:

People on anticoagulants: As described above, the combination can dangerously amplify blood-thinning drugs. This includes warfarin, dabigatran, and related medications. Even daily aspirin use warrants caution with concentrated doses.
People with liver conditions: High cassia cinnamon intake adds coumarin load, which stresses the liver. Switching to Ceylon cinnamon or keeping doses low is important if you have existing liver disease.
Pregnant women: Culinary amounts are generally considered safe, but concentrated supplements of either spice lack sufficient safety data during pregnancy.
People scheduled for surgery: The blood-thinning effects of both spices mean it is reasonable to stop high-dose supplements a week or two before a planned procedure, just as you would with aspirin or fish oil.

For everyone else, the combination of ginger and cinnamon in food and beverages is one of the better-supported spice pairings in terms of safety and potential benefit. The research is still evolving and most of the strongest findings come from animal models, but the direction of the evidence is positive enough that enjoying the two together in your cooking or tea is a perfectly reasonable thing to do.