SAEDNEWS: Cinnamon tea is loved for its pleasant aroma and potential health benefits, but excessive or prolonged consumption, especially of the cassia variety, may lead to serious side effects.
According to Saednews, Cinnamon tea is a warm, aromatic beverage enjoyed in many cultures, especially during the colder months. In addition to its pleasant flavor, cinnamon contains compounds with potential antioxidant and anti-inflammatory properties. As a result, it has attracted attention in traditional medicine and some scientific studies.
However, like other foods and herbal products, consuming cinnamon tea in excessive amounts or over extended periods may lead to adverse effects. Many people are unaware of its potential risks and assume that because cinnamon is a natural spice, consuming large quantities is always safe.
This article explores the possible side effects of cinnamon tea, the differences between cinnamon varieties, recommended intake levels, and groups of people who may need to exercise extra caution.
Cinnamon tea is usually prepared by steeping cinnamon sticks in hot water or adding ground cinnamon to boiling water. Some people combine it with honey, lemon, or black tea.
Its warm aroma, naturally sweet flavor, and potential digestive, anti-inflammatory, and blood sugar-regulating effects have contributed to its popularity.
However, this popularity can sometimes encourage excessive or uninformed consumption. It is important to understand that not all types of cinnamon are the same, and not every pattern of consumption is equally safe.
Before examining the potential side effects of cinnamon tea, it is important to distinguish between its two main varieties.
Ceylon cinnamon: Also known as true cinnamon, it contains very low levels of coumarin and is generally considered the safer option for regular culinary use.
Cassia cinnamon: Commonly sold as ordinary cinnamon in many stores, it contains substantially higher levels of coumarin, a naturally occurring compound that may damage the liver when consumed in excessive amounts.
Many of the potential risks associated with cinnamon tea arise from consuming large quantities of Cassia cinnamon over an extended period. If your tea is made with Cassia cinnamon, your exposure to coumarin may be considerably higher.
One of the most significant potential risks of cinnamon tea is liver damage associated with excessive coumarin intake.
European food safety guidance establishes a tolerable daily intake of approximately 0.1 milligrams of coumarin per kilogram of body weight.
For a person weighing 60 kilograms, this equals about 6 milligrams per day. A teaspoon of ground Cassia cinnamon may contain approximately 5–12 milligrams of coumarin, although the actual amount varies considerably depending on the product.
Consequently, frequent consumption of Cassia cinnamon tea may cause coumarin intake to exceed recommended limits, potentially placing additional stress on the liver.
Early signs of liver injury may be subtle. In severe cases, liver damage can progress to toxic hepatitis and, rarely, liver failure.
Cinnamon may affect blood clotting, although the clinical significance of this effect is not fully established.
Consuming large amounts of cinnamon alongside medications such as warfarin, aspirin, clopidogrel, or heparin may raise concerns about bleeding, particularly when other risk factors are present.
This is especially important for people taking anticoagulant or antiplatelet medications because of cardiovascular disease or a history of stroke. Anyone who regularly consumes concentrated cinnamon preparations should consult a healthcare professional about possible interactions.
Some studies suggest that cinnamon may help lower blood glucose levels, although the evidence remains mixed.
This effect could be relevant for people with diabetes who use insulin or oral glucose-lowering medications. Combining these treatments with large amounts of cinnamon may potentially increase the risk of low blood sugar.
Symptoms of hypoglycemia include:
Shaking or trembling
Sweating
Weakness
Dizziness
Confusion
In severe cases, loss of consciousness
People taking diabetes medication should discuss regular or high-dose cinnamon consumption with their healthcare provider.
Cinnamon can irritate the digestive tract in some individuals. Drinking excessive amounts of cinnamon tea may contribute to heartburn, acid reflux, nausea, diarrhea, or stomach pain.
Some people may also experience burning sensations or sores in the mouth after consuming cinnamon.
These reactions may result from cinnamon's active compounds irritating sensitive oral or digestive tissues.
Although cinnamon allergy is uncommon, it can occur in susceptible individuals.
Possible symptoms include:
Skin redness and itching
Hives
Swelling of the lips or face
Difficulty breathing in severe cases
People with sensitivities to other spices may also react to cinnamon.
Inhaling airborne cinnamon powder can irritate the respiratory tract and trigger coughing or breathing discomfort. Severe breathing difficulties or swelling of the throat require emergency medical attention.
High or medicinal doses of Cassia cinnamon are generally best avoided during pregnancy unless a healthcare professional advises otherwise.
Coumarin can cross the placenta, but the extent to which ordinary dietary exposure affects human pregnancy outcomes is not well established. Some animal studies have reported adverse effects at high doses, but these findings do not necessarily translate directly to humans.
There is also insufficient evidence regarding the safety of consuming large amounts of cinnamon during breastfeeding.
Pregnant and breastfeeding individuals should avoid concentrated cinnamon supplements and seek medical advice before using cinnamon in medicinal quantities. Normal culinary amounts are different from high-dose preparations.
Some research suggests that cinnamon may have a modest blood-pressure-lowering effect, but the evidence is limited.
For people taking antihypertensive medications, large amounts of cinnamon may raise concerns about dizziness or low blood pressure, although clinically significant interactions have not been firmly established.
People with cardiovascular conditions should discuss regular, high-dose cinnamon consumption with their healthcare provider, especially if they take multiple medications.
Cassia cinnamon may contain oxalates, compounds that can contribute to calcium oxalate stone formation in susceptible individuals.
People with a history of kidney stones may therefore wish to avoid excessive cinnamon consumption, particularly if their healthcare provider has advised them to limit dietary oxalates.
Adequate hydration and individualized dietary guidance are important for people at increased risk of kidney stones.
Children may be more vulnerable to excessive coumarin exposure because recommended intake limits are based on body weight.
Older adults may also face additional concerns because they are more likely to take several medications and may have reduced liver or kidney function.
For these groups, concentrated cinnamon preparations and frequent high-volume consumption should be approached cautiously.
If you enjoy cinnamon tea, several precautions may help reduce potential risks.
Choose Ceylon cinnamon instead of Cassia when possible.
Avoid excessive or prolonged daily consumption, especially when using Cassia cinnamon.
Be cautious with concentrated cinnamon extracts, supplements, and large quantities of ground cinnamon.
Consider your body weight, medical conditions, and medications when assessing your exposure.
The commonly cited tolerable daily intake for coumarin is approximately 0.1 milligrams per kilogram of body weight.
For someone weighing 60 kilograms, this corresponds to about 6 milligrams per day.
A teaspoon of ground Cassia cinnamon may contain approximately 5–12 milligrams of coumarin. This means that even a relatively small amount may exceed the tolerable intake, depending on the product.
By comparison, Ceylon cinnamon contains substantially less coumarin.
For many healthy adults, an occasional cup of lightly prepared Ceylon cinnamon tea is likely to present a lower risk than frequent consumption of strong Cassia cinnamon tea. However, there is no universally established safe number of cups per day because coumarin concentrations and preparation methods vary.
If you use Cassia cinnamon, consider keeping consumption occasional and modest rather than drinking it every day. People with underlying health conditions, children, and pregnant or breastfeeding individuals should seek individualized guidance when considering regular consumption.
Excessive or prolonged cinnamon consumption may warrant medical attention if unusual symptoms develop.
Seek medical advice if you experience any of the following:
Possible liver injury: Yellowing of the skin or eyes, dark urine, unusual fatigue, or abdominal pain.
Unusual bleeding: Unexplained bruising, bleeding gums, or frequent nosebleeds, particularly if you take blood-thinning medication.
Low blood sugar: Shaking, cold sweats, weakness, confusion, or a rapid heartbeat.
Allergic reactions: Itching, hives, or swelling of the lips and face.
Digestive problems: Persistent heartburn, nausea, or diarrhea.
Low blood pressure: Dizziness, weakness, or blurred vision.
Stop consuming cinnamon tea if you suspect it is causing adverse effects and contact a healthcare professional. Seek emergency care for severe allergic reactions, loss of consciousness, or serious bleeding.
Certain groups may need to be particularly cautious about regular or high-dose cinnamon consumption.
Pregnant or breastfeeding individuals: The safety of medicinal quantities is insufficiently established.
Children: Their lower body weight can make excessive coumarin exposure more concerning.
Older adults: Multiple medications and age-related changes in organ function may increase potential risks.
People with liver disease: Cassia cinnamon may contribute to excessive coumarin exposure.
People with kidney disease or recurrent kidney stones: Individual dietary restrictions and oxalate exposure may be relevant.
People with bleeding disorders: Those with conditions such as hemophilia should seek medical advice before consuming concentrated cinnamon products.
People with diabetes: Cinnamon may complicate blood glucose management when combined with medication.
People taking blood pressure medication: They should be cautious with concentrated products, particularly if they experience dizziness or low blood pressure.
People preparing for surgery: Inform your surgical team about cinnamon supplements or medicinal quantities, especially because of possible interactions. Follow their advice about whether and when to discontinue them.
Cinnamon products may raise interaction concerns with certain medications, particularly when consumed in large amounts or as concentrated supplements.
Blood-thinning and antiplatelet medications: Warfarin, aspirin, clopidogrel, and heparin.
Diabetes medications: Insulin, metformin, glibenclamide, and other glucose-lowering drugs. The potential concern is an additive effect on blood sugar, although the extent of this interaction is uncertain.
Blood pressure medications: Beta-blockers, ACE inhibitors, and diuretics. Clinically significant interactions have not been firmly established, but monitoring may be appropriate when using concentrated products.
Medications that can affect the liver: Combining high-coumarin cinnamon products with medicines that may cause liver injury could increase concerns about liver safety.
Herbal supplements: Ginger, garlic, ginkgo, and vitamin E may affect bleeding risk in certain circumstances, particularly at higher doses or when combined with medications.
If you take prescription medication regularly, consult a physician or pharmacist before using cinnamon supplements or consuming medicinal quantities of cinnamon tea.
Selecting the right variety can help reduce coumarin exposure.
Ceylon cinnamon
Usually lighter in color
Has thin, delicate layers in its rolled sticks
Typically has a milder aroma and sweeter, more delicate flavor
Contains very low levels of coumarin
Cassia cinnamon
Often darker in color
Usually has thicker, harder bark
Has a stronger, more pungent flavor
Generally contains much higher levels of coumarin
Appearance alone cannot reliably identify every product. Whenever possible, check the packaging for the cinnamon species and purchase from a reputable seller. If the variety is not specified, avoid assuming that the product is low in coumarin.
If you want to vary your warm beverages, consider these alternatives:
Ginger tea: A warming drink that may have anti-inflammatory properties, although it can aggravate reflux in some people.
Chamomile tea: Commonly used as a relaxing beverage and may support sleep, though it can trigger allergies in susceptible individuals.
Peppermint tea: May help with some digestive symptoms, but it can worsen acid reflux.
Green tea: Contains antioxidants and has been studied for potential metabolic benefits. It also contains caffeine unless specifically decaffeinated.
Ceylon cinnamon tea: If you enjoy cinnamon's distinctive flavor, this variety generally provides substantially lower coumarin exposure than Cassia.
Each option has its own potential limitations, so the most suitable choice depends on your health, sensitivities, and medications.
Cinnamon tea is a flavorful beverage that may offer some potential benefits, but excessive or prolonged consumption—particularly when made with Cassia cinnamon—can increase the risk of adverse effects.
The main concerns include excessive coumarin exposure and possible liver injury, as well as potential digestive irritation, allergic reactions, and interactions with certain medications. The strength of the evidence varies, and many proposed effects of cinnamon have not been conclusively established in human studies.
The key to safer consumption is moderation, choosing the appropriate cinnamon variety, and considering your individual health circumstances.
If you are pregnant, have liver or kidney disease, manage diabetes, take blood-thinning medication, or use other prescription drugs, consult a healthcare professional before making cinnamon tea a regular part of your routine.
