Cinnamon side effects

Cinnamon side effects

The degree of safety in the use of Chinese cinnamon


Chinese cinnamon is often considered safe in a dose ranging from one to six grams, for a period of no more than six weeks, and from one to two grams for a period not exceeding three months, and it is likely that Chinese cinnamon is not safe to take in large quantities and over long periods of time, as it contains coumarin. Coumarin, whose excessive intake can cause liver injury in some people, especially those who suffer from allergies, although the amount of coumarin consumed from cinnamon does not cause serious side effects in most people.

Contraindications to the use of Chinese cinnamon


The following shows some groups that should be careful and consult a specialist before consuming Chinese cinnamon:


Cinnamon can lower the blood sugar level in diabetic patients, so these patients should monitor the low blood sugar level when taking Cinnamon in greater quantities than found in food.

Those who are about to undergo surgery:


It is worth refraining from taking Chinese cinnamon in a medicinal dose at least two weeks before undergoing the operation, as it lowers the level of sugar in the blood, and may interfere with controlling its levels during and after. the operation.

Pregnant and breastfeeding women:


There is not enough reliable information about the safety of Chinese cinnamon for pregnant and breastfeeding women, so it is best to avoid it to prevent any harm.



Chinese cinnamon may be safe if it is taken in an amount of one gram per day, for a period not exceeding three months for adolescents from 13 to 18 years old.

Chinese cinnamon drug interactions:


Hepatotoxic drugs: It is possible to take very high doses of Chinese cinnamon to increase liver damage, especially in people with liver diseases, in addition to taking high doses of Chinese cinnamon in conjunction with drugs that may harm the liver. In the liver, the risk of liver damage may be exacerbated, and these drugs include: Acetaminophen, Amiodarone, Carbamazepine, and others.

Diabetes drugs: Antidiabetes drugs, Chinese cinnamon may reduce the level of sugar in the blood, so taking Chinese cinnamon in conjunction with diabetes drugs may increase the drop in blood sugar significantly, and the patient may need to change the dosage of drugs under the supervision of the doctor, and from These drugs are: Glimepiride, Glyburide, Insulin, Metformin, and others.


Other caveats to the use of cinnamon

Chinese cinnamon contains coumarin in a greater amount than Ceylon cinnamon, which makes Ceylon cinnamon safer, and coumarin can cause harm when consumed in large quantities, as a review published in the Journal of Food and Chemical Toxicology indicated, that coumarin can It can cause damage to the liver and lungs if taken in large quantities


Other general contraindications to cinnamon are as follows:


Breathing problems:


Eating large amounts of ground cinnamon may cause some respiratory problems, including coughing, difficulty breathing, and attempting to vomit, due to the possibility of inhaling it by mistake. Cinnamon aldehyde can also irritate the throat, leading to problems in the In addition, it may cause damage to the lungs, as the lung cannot analyze the fibers in cinnamon, which leads to its accumulation, causing aspiration pneumonia. Also, eating ground cinnamon without following it with a substance Liquid, may cause choking, vomiting, and breathing problems.

Allergic reactions:


Some people may suffer from an allergy to cinnamon, and allergy symptoms may appear in the form of a rash around the mouth and lips, or in the area in contact with cinnamon, or the rash may spread throughout the body, and some may suffer from ulcers in the mouth as a result of an allergy to Cinnamon aldehyde when consumed in large quantities, and according to a preliminary study published in The Journal of the American Dental Association, the possibility of mouth ulcers caused by eating cinnamon is rare, and may occur as a result of eating products containing cinnamon such as chewing gum, and the study also indicated that the symptoms of allergic reactions It disappears within two days after you stop taking cinnamon gum.

Other possible caveats:


Other possible caveats: Eating very large amounts of coumarin may increase the risk of cancer, according to laboratory studies conducted on animals, such as lung cancer, liver cancer, and kidney cancer.  According to a laboratory study published in the journal Toxicology and Applied Pharmacology, Eating high doses of coumarin increases the chance of lung cancer cells forming in laboratory mice, and another laboratory study showed that rats consuming large amounts of coumarin for a long period of time may increase the risk of lung, liver, kidney, and stomach cancers. It may also damage the bile duct. It is worth noting that all studies have been conducted on animals, and there is no study confirming the danger of carcinogenic coumarin to humans.

Frequently asked questions about cinnamon’s side effects

What are the effects of cinnamon on the kidneys?
There is no information indicating that cinnamon is harmful to the kidneys, and a laboratory study conducted on mice and published in the Pakistan Journal of Life & Social Sciences in 2016, indicated that eating cinnamon does not harm the kidneys after giving mice different doses of cinnamon, and no difference was observed. In the levels of blood urea, creatinine, and electrolytes, and the structure of kidney cells did not change, which indicates that cinnamon is safe for the kidneys.

What are the effects of cinnamon on the heart?

There is no information to suggest that cinnamon is harmful to the heart.

What are the effects of cinnamon on the liver?
As mentioned previously, Chinese cinnamon contains coumarin, a teaspoon equivalent to 2.6 grams may contain between 7 to 18 milligrams of coumarin, and it is worth noting that the upper limit for coumarin consumption is 0.1 milligrams per kilogram of body weight, or 5 milligrams per 59 kilograms of body weight, and a preliminary study published in the American Journal of Case Reports in 2015, showed that a 73-year-old woman’s consumption of cinnamon supplements in conjunction with a statin drug for coronary artery disease, led to her infection in coronary artery disease. Liver (in English: Hepatitis) due to the combination of cinnamon and this drug, which necessitated stopping taking cinnamon as a dietary supplement to prevent damage to the liver.

What are the effects of cinnamon on pressure patients?

As mentioned previously, Ceylon cinnamon can cause a drop in blood pressure, so patients with low blood pressure should be careful when eating it.

What are the benefits of cinnamon for pregnant and lactating women?

As mentioned earlier, there is no reliable and sufficient information about the safety of eating Chinese cinnamon for pregnant and lactating women, so it is best to avoid it during this period. As for Ceylon cinnamon, it is often safe when eaten in moderate quantities during pregnancy and lactation, and is often considered unsafe for pregnant women when ingested. In larger quantities than those found in food, and there is not enough information about the safety of large doses for breastfeeding women, so it is best to take them in moderate amounts.

What are the effects of cinnamon on the uterus?
There is no information to indicate that cinnamon has harmful effects on the uterus.

What damage cinnamon for the menstrual cycle?

There is no information to indicate that cinnamon is harmful to the menstrual cycle.

Cinnamon overview:


Cinnamon is one of the oldest and most widely consumed spices. It has been used as a medicinal herb since antiquity. Cinnamon is obtained from the dried inner bark stem of a small evergreen tree, ranging in length from 10 to 10 15 meters,[16] and several types of cinnamon are available, the most famous of which are: Chinese cinnamon, called Darsini, and Ceylon cinnamon.Cinnamon mainly contains essential oils and other chemical derivatives such as: cinnamaldehyde or cinnamon aldehyde and cinnamaldehyde. Cinnamic acid, cinnamate, as well as procyanidins and catechins, which give cinnamon distinctive properties, as they are antioxidant, anti-inflammatory and anti-microbial, and they reduce diabetes.

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