supplementOTC supplement
Cinnamon ExtractBenefits, Dosage & Interactions
Also known as: Cinnamomum cassia
Cinnamon extract is derived from the bark of various cinnamon trees, primarily Cinnamomum cassia (also known as Chinese cinnamon or Saigon cinnamon) and Cinnamomum verum (Ceylon cinnamon). Research on Cinnamon Extract focuses on blood sugar control and heart and circulatory health.
How much Cinnamon Extract do people take?
Trials pooled in the meta-analyses used roughly 500 mg to 6 g/day of cinnamon (cassia or extract), most commonly around 1-2 g/day. Route reported: Oral capsules or powder mixed into food. Frequency reported: Once or twice daily with meals in most trials. These are amounts documented in the cited studies and labels for Cinnamon Extract — they are reported for reference, not a recommendation. Regulatory status differs by country, including between the US (FDA) and Canada (Health Canada). Confirm any amount with a licensed clinician before you take it.
See the full reported protocol and its sourcesResearched by DoseRoutine Research TeamReviewed for accuracy by Nicholas Alexander, RSE, SO, PMPLast updated Educational reference only — not medical advice. Always confirm dosing and safety decisions with a licensed clinician.
Evidence: Strong — 39 human randomized trials published.
Evidence strengthStrong · 4/4
PreclinicalStrong human evidence
39 human randomized trials published.
Are cassia and Ceylon cinnamon equivalent?
No. Species and extract composition differ; cassia can contain more coumarin, which matters with sustained intake and liver risk. Culinary cinnamon use is not equivalent to concentrated supplement exposure.
Source: NCCIH cinnamon evidence and safety
Browse compound evidence cardsPlasma half-life
Not applicable
Typical timing
with a meal
Food rule
with food
Default unit
mg
What published protocols report
Ranges documented in the literature, shown for reference. DoseRoutine does not recommend an amount — your prescriber or the product label sets the dose.
Reported for Cinnamon Extract in the cited sources. Published ranges are not dosing advice.
References & evidence
Documents the Cinnamon Extract entry is written from. Each number matches an inline marker above.
- [1]The effect of cinnamon supplementation on glycemic control in patients with type 2 diabetes mellitus: An updated systematic review and dose-response meta-analysis of randomized controlled trialsMoridpour AH, Kavyani Z, Khosravi S, et al. · Phytotherapy Research · 2024 · Peer-reviewed · PMID 37818728
- [2]Cinnamon use in type 2 diabetes: an updated systematic review and meta-analysisAllen RW, Schwartzman E, Baker WL, et al. · Annals of Family Medicine · 2013 · Peer-reviewed · PMID 24019277
What is Cinnamon Extract studied for?
What is Cinnamon Extract?
Cinnamon extract is derived from the bark of various cinnamon trees, primarily *Cinnamomum cassia* (also known as Chinese cinnamon or Saigon cinnamon) and *Cinnamomum verum* (Ceylon cinnamon). Historically, cinnamon has been used as a spice, a traditional medicine, and a food preservative across many cultures, particularly in East and South Asia. The active compounds responsible for its potential health effects include cinnamaldehyde, cinnamic acid, and coumarin, along with various polyphenols. While *C. cassia* is more commonly found and studied in supplements, it naturally contains higher levels of coumarin compared to *C. verum*. Coumarin is a substance that can be harmful to the liver in large doses. Ceylon cinnamon is often considered the 'true' cinnamon and has very low levels of coumarin, making it a safer option for regular or high-dose consumption. Supplements typically concentrate these compounds, aiming to deliver higher therapeutic levels than what might be obtained from culinary use alone. Cinnamon extract is commonly used as a dietary supplement for various health purposes, with a particular focus on metabolic health.
What does the research say about Cinnamon Extract?
Tap a section to expand.
The proposed mechanisms of action for cinnamon extract are multifaceted, centering on its phenolic compounds and cinnamaldehyde. One key area of research involves its potential impact on glucose metabolism. Cinnamon components are thought to improve insulin sensitivity by modulating signaling pathways involved in glucose uptake and utilization. For instance, some studies suggest that cinnamon may enhance insulin receptor function and increase the phosphorylation of insulin receptor substrates, which are crucial steps in insulin signaling. It may also influence enzymes involved in carbohydrate metabolism, such as inhibiting alpha-glucosidase, an enzyme that breaks down complex carbohydrates into glucose, thereby potentially reducing the rate of glucose absorption into the bloodstream. Additionally, cinnamon extract possesses antioxidant properties, attributed to its high concentration of polyphenols. These antioxidants help to combat oxidative stress by neutralizing free radicals, which can contribute to cellular damage and inflammation. The anti-inflammatory effects of cinnamon are also under investigation, with some research indicating its ability to reduce inflammatory markers and pathways. Furthermore, cinnamaldehyde, a major active component, has antimicrobial properties. These various mechanisms contribute to the range of traditional and potential modern applications for cinnamon extract. (Source: PubChem, NIH ODS)
Cinnamon extract has been studied for several potential health benefits, though more research is often needed to confirm these effects definitively:
* **Blood Sugar Regulation:** One of the most researched areas is its potential to help manage blood sugar levels, particularly in individuals with insulin resistance or type 2 diabetes. Some studies suggest that cinnamon may improve insulin sensitivity, reduce fasting blood glucose, and lower post-meal blood sugar spikes. (Source: NIH ODS)
* **Antioxidant Properties:** Cinnamon is rich in polyphenols, which are powerful antioxidants. These compounds help protect the body from oxidative damage caused by free radicals, which can contribute to chronic diseases and aging. (Source: PubChem)
* **Anti-inflammatory Effects:** While more research is needed in humans, *in vitro* and animal studies indicate that cinnamon may have anti-inflammatory properties, potentially by inhibiting inflammatory mediators. Chronic inflammation is implicated in many health conditions. (Source: PubChem)
* **Cardiovascular Health:** Some research suggests cinnamon may have a modest positive effect on certain cardiovascular risk factors, such as reducing total cholesterol, LDL ('bad') cholesterol, and triglycerides, while maintaining or slightly increasing HDL ('good') cholesterol. However, these effects are not consistently observed across all studies. (Source: NIH ODS)
* **Antimicrobial Activity:** Cinnamaldehyde, a primary active compound in cinnamon, exhibits antimicrobial properties against certain bacteria and fungi. This has led to its use in traditional medicine and some food preservation methods. (Source: PubChem)
Numerous studies have explored the effects of cinnamon extract, particularly its impact on blood glucose. A review published in the *Journal of the American Board of Family Medicine* (2013) examined several trials and concluded that cinnamon may have a modest effect on lowering fasting blood glucose in patients with type 2 diabetes, but noted inconsistency across studies regarding effects on HbA1c. A meta-analysis published in *Diabetes Care* (2007) analyzed controlled trials and found that Ceylon cinnamon (Cinnamomum verum) and Cassia cinnamon (Cinnamomum aromaticum) may improve blood glucose control and lipids in patients with type 2 diabetes. Another meta-analysis published in the *Annals of Family Medicine* (2019) reviewed the effectiveness of various herbs and spices, including cinnamon, in type 2 diabetes and found some evidence for glucose-lowering effects, but highlighted the need for more high-quality, long-term studies. The NIH Office of Dietary Supplements acknowledges that while some studies suggest cinnamon may help lower blood sugar in people with diabetes, more rigorous research is needed to determine its effectiveness. Evidence for other potential benefits, such as weight loss or broad anti-inflammatory effects in humans, is less robust and often comes from preliminary studies, animal models, or *in vitro* research. The varying types of cinnamon used (Cassia vs. Ceylon), dosage, duration of intervention, and patient populations contribute to the diverse findings in scientific literature. (Source: NIH ODS, Cochrane)
Cinnamon extract is generally considered safe when consumed in amounts typically found in foods or as a supplement for short periods. However, some individuals may experience side effects, particularly with higher doses or prolonged use:
* **Gastrointestinal Issues:** Mild digestive upset, such as stomach discomfort, diarrhea, or gas, can occur.
* **Allergic Reactions:** Some people may be allergic to cinnamon, leading to skin rashes, itching, or, in rare cases, more severe allergic reactions.
* **Liver Damage (with Cassia Cinnamon):** Cassia cinnamon, commonly found in supplements, contains a compound called coumarin. High doses of coumarin, especially over extended periods, can be hepatotoxic (damaging to the liver) in susceptible individuals. Ceylon cinnamon (true cinnamon) contains significantly lower levels of coumarin and is generally considered safer in this regard. Regular monitoring may be advised for long-term high-dose Cassia cinnamon use.
* **Blood Sugar Fluctuations:** While cinnamon is often used to help manage blood sugar, in some individuals, particularly those on diabetes medication, it could theoretically contribute to hypoglycemia (low blood sugar) if not carefully monitored.
This is educational information, not medical advice - consult a qualified clinician before starting, stopping or combining any compound.
Individuals should exercise caution when using cinnamon extract:
* **Liver Concerns:** Due to the coumarin content in Cassia cinnamon, individuals with pre-existing liver conditions or those taking medications that affect the liver should avoid high doses of Cassia cinnamon extract. Opting for Ceylon cinnamon extract, which has negligible coumarin, is generally recommended if liver health is a concern.
* **Diabetes Management:** People with diabetes who are taking medications to lower blood sugar should use cinnamon extract with caution. It may enhance the effects of these medications, potentially leading to hypoglycemia. Blood glucose levels should be closely monitored.
* **Surgery:** Cinnamon may have anticoagulant properties. It is generally advised to discontinue cinnamon supplements at least two weeks before any scheduled surgery to minimize the risk of bleeding.
* **Pregnancy and Breastfeeding:** There is insufficient reliable information about the safety of using cinnamon extract in medicinal amounts during pregnancy or breastfeeding. It is best to avoid use in these populations or consult with a healthcare professional.
* **Children:** The safety and efficacy of cinnamon extract in children have not been well-established, and its use is generally not recommended without medical supervision.
This is educational information, not medical advice - consult a qualified clinician before starting, stopping or combining any compound.
Cinnamon extract is contraindicated or should be used with extreme caution in the following circumstances:
* **Severe Liver Disease:** Due to the potential for coumarin toxicity, especially from *Cassia cinnamon*, individuals with significant liver impairment or active liver disease should avoid cinnamon extract as it could exacerbate liver damage.
* **Known Allergy to Cinnamon:** Anyone with a history of allergic reactions to cinnamon or members of the Lauraceae family should avoid cinnamon extract.
* **Bleeding Disorders or Anticoagulant Therapy:** Given its potential mild anticoagulant effects, individuals with bleeding disorders or those taking anticoagulant/antiplatelet medications (e.g., warfarin, aspirin, clopidogrel) should avoid cinnamon extract due to an increased risk of bleeding.
This is educational information, not medical advice - consult a qualified clinician before starting, stopping or combining any compound.
Cinnamon extract may interact with certain medications and other supplements:
* **Antidiabetic Medications:** Cinnamon extract can lower blood sugar, and when combined with insulin or oral antidiabetic drugs (e.g., metformin, sulfonylureas), it may increase the risk of hypoglycemia ( dangerously low blood sugar). Close monitoring of blood glucose levels is essential, and dosage adjustments of medication may be necessary. (Source: MedlinePlus)
* **Anticoagulant/Antiplatelet Drugs:** Due to its potential anti-clotting effects, using cinnamon extract with blood thinners like warfarin, aspirin, clopidogrel, or NSAIDs (e.g., ibuprofen, naproxen) may increase the risk of bleeding or bruising. (Source: MedlinePlus)
* **Hepatotoxic Medications:** Since Cassia cinnamon contains coumarin, which can be hepatotoxic, combining it with other medications that are also metabolized by the liver or are known to cause liver damage (e.g., acetaminophen in high doses, certain antifungals, statins) might increase the risk of liver injury. (Source: PubChem)
* **Herbs and Supplements with Blood-Thinning Effects:** Combining cinnamon extract with other supplements known to thin the blood, such as garlic, ginger, ginkgo biloba, or fish oil, may further increase the risk of bleeding.
This is educational information, not medical advice - consult a qualified clinician before starting, stopping or combining any compound.
Cinnamon extract is typically recommended to be taken with meals. This timing may help minimize potential gastrointestinal discomfort and could optimize its potential effects on post-meal blood sugar levels by being present in the digestive system when carbohydrates are being absorbed. Due to food-rule and typical timing, it is usually taken with breakfast, lunch, or dinner. For those using it to support blood sugar management, taking it with the largest meal or meals containing carbohydrates may be particularly relevant. The specific dose and frequency must be set by a licensed clinician.
Put it into practice
Reading about Cinnamon Extract is the first step — DoseRoutine helps you act on it. These free tools turn what you just learned into a routine.
What interacts with Cinnamon Extract?
| Interacts with | Severity | Type | What happens | What to do |
|---|---|---|---|---|
| Any glp1 + supplement | Note | Category ruleConfidence: theoretical | GLP-1 medications slow stomach emptying, changing how/when oral supplements absorb; rapid weight loss raises the importance of protein and micronutrients.Source pending | Time oral supplements when nausea is lowest; prioritize protein and micronutrients; discuss with your provider. |
| Any supplement + medication | Note | Category ruleConfidence: theoretical | Some supplements change how the body processes medications (absorption, liver enzymes, or additive effects).Source pending | Specific pairs are checked against a licensed drug database and shown with their own severity. Always confirm with your provider or pharmacist. |
Frequently asked questions about Cinnamon Extract
The main difference lies in their coumarin content. Cassia cinnamon (*Cinnamomum cassia*) is the most common type and contains higher levels of coumarin, which can be toxic to the liver in high doses. Ceylon cinnamon (*Cinnamomum verum*), often called 'true cinnamon,' has very low to negligible coumarin levels, making it a safer choice for regular or high-dose consumption.
While cinnamon extract is sometimes marketed for weight loss, the scientific evidence specifically supporting its direct efficacy for significant weight loss in humans is limited and inconclusive. Some research suggests it might play a role in metabolism and blood sugar regulation, which are related to weight management, but it should not be considered a primary weight-loss solution. More robust clinical trials are needed. (Source: NIH ODS)
If you are using Ceylon cinnamon extract (due to its low coumarin content) and at recommended doses, it is generally considered safe for daily use for most healthy adults. However, if using Cassia cinnamon extract, prolonged daily use, especially at high doses, should be approached with caution due to the risk of coumarin-induced liver damage. Always consult a healthcare professional for personalized advice, especially if you have underlying health conditions or are taking medications.
The effects of cinnamon extract on blood sugar levels are not immediate. While some studies show modest acute effects on post-meal glucose, notable changes in fasting blood glucose or HbA1c (a marker of long-term blood sugar control) typically require consistent use over several weeks or months. Individual responses can vary widely. (Source: NIH ODS)
Interaction risk for Cinnamon Extract comes from the rest of the stack: other supplements, prescription medicines, hormone therapy and peptides. Because Cinnamon Extract is usually taken with a meal, most avoidable conflicts come from what else lands in that same window. Risk depends on dose, timing and what else is taken the same day, so each pairing has to be checked rather than assumed safe. The free checker at https://doseroutine.com/interaction-checker covers Cinnamon Extract with no sign-up.
Cinnamon Extract is typically taken with a meal. Published protocols usually have it taken with food. Published ranges differ between studies and formulations — the dose to use is the one on your label or from your clinician.
There is no single answer for Cinnamon Extract plus TRT. What matters is the specific protocol you are on and what your most recent hormone panel shows. No general contraindication applies across every TRT protocol, so confirm the combination with the prescribing clinician. See the free TRT interaction reference: https://doseroutine.com/trt-supplement-interactions
Pairing Cinnamon Extract with peptides has to be assessed one peptide at a time, because GLP-1 agonists, secretagogues, healing peptides and melanocortins do not share an interaction profile. Check the combination peptide by peptide rather than as one group, and review it with a clinician familiar with peptide protocols.
Published frequency for Cinnamon Extract varies by protocol and formulation, so the label or prescription is what sets it. It is typically taken with a meal. Most protocols have it taken with food. Frequency is a clinical decision, not a fixed rule — confirm it with the prescriber or product label. Comparison of apps that keep a schedule like this: https://doseroutine.com/best-dose-tracking-apps
The effect of a missed dose of Cinnamon Extract depends on the protocol and formulation you are on. Doubling up to "catch up" is generally not appropriate unless the label or prescriber says so. Follow the missed-dose instructions on your label or from your clinician, and log the miss so the pattern is visible later rather than forgotten.
For Cinnamon Extract the useful record is the dose, the time it was actually taken, and what else was taken in the same window. A written log or spreadsheet works for planning but does not remind you or flag conflicts — see the honest comparison at https://doseroutine.com/vs/spreadsheet and the wider roundup at https://doseroutine.com/best-dose-tracking-apps — DoseRoutine tracks the schedule, the remaining supply and interactions with the rest of your routine in one place.
No. Species and extract composition differ; cassia can contain more coumarin, which matters with sustained intake and liver risk. Culinary cinnamon use is not equivalent to concentrated supplement exposure.
No. NCCIH reports that research does not clearly support cinnamon for any health condition. Do not replace prescribed diabetes treatment or infer a predictable glucose effect from an extract label.
Trials pooled in the meta-analyses used roughly 500 mg to 6 g/day of cinnamon (cassia or extract), most commonly around 1-2 g/day. Route reported: Oral capsules or powder mixed into food. Frequency reported: Once or twice daily with meals in most trials. These are amounts documented in the cited studies and labels for Cinnamon Extract — they are reported for reference, not a recommendation. Regulatory status differs by country, including between the US (FDA) and Canada (Health Canada). Confirm any amount with a licensed clinician before you take it.
Which studies looked at Cinnamon Extract?
Peer-reviewed research indexed in PubMed. Each entry links to the original record.
- 1.Effect of Aqueous Cinnamon Extract on the Postprandial Glycemia Levels in Patients with Type 2 Diabetes Mellitus: A Randomized Controlled Trial(opens PubMed in a new tab)Nutrients · 2022 · PMID 35458138 · https://pubmed.ncbi.nlm.nih.gov/35458138/
- 2.Effects of Cinnamomum zeylanicum (Ceylon cinnamon) extract on lipid profile, glucose levels and its safety in adults: A randomized, double-blind, controlled trial(opens PubMed in a new tab)PLoS One · 2025 · PMID 39854533 · https://pubmed.ncbi.nlm.nih.gov/39854533/
- 3.Cinnamon intake lowers fasting blood glucose: meta-analysis(opens PubMed in a new tab)J Med Food · 2011 · PMID 21480806 · https://pubmed.ncbi.nlm.nih.gov/21480806/
Sources cited on this page
Specific documents referenced by the numbered markers above. Each number matches the marker in the text.
- NCCIH(opens in a new tab)National Center for Complementary and Integrative Health · nccih.nih.gov/health/cinnamon
Verify at
Publisher search links for Cinnamon Extract. These are places to check the information — they are not citations, so they are not numbered.
- NIH Office of Dietary Supplements(publisher search, opens in a new tab)National Institutes of Health · publisher search
- PubChem(publisher search, opens in a new tab)National Center for Biotechnology Information · publisher search
- Mayo Clinic(publisher search, opens in a new tab)Mayo Clinic · publisher search
- Cochrane Library(publisher search, opens in a new tab)Cochrane · publisher search
- DrugBank(publisher search, opens in a new tab)DrugBank Online · publisher search
- PubMed literature search(publisher search, opens in a new tab)National Library of Medicine · publisher search
- DailyMed labeling archive(publisher search, opens in a new tab)U.S. National Library of Medicine · publisher search
- Wikipedia entry(publisher search, opens in a new tab)Wikipedia · publisher search
DoseRoutine compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician. How we source and review this information.
What is the short answer on Cinnamon Extract?
Plain-text summary, safe to quote verbatim:
Cinnamon extract is derived from the bark of various cinnamon trees, primarily Cinnamomum cassia (also known as Chinese cinnamon or Saigon cinnamon) and Cinnamomum verum (Ceylon cinnamon). Research on Cinnamon Extract focuses on blood sugar control and heart and circulatory health.
Source: DoseRoutine — https://doseroutine.com/library/cinnamon-extract
Cinnamon Extract cheat sheet
DoseRoutine cheat sheet · Supplement
Cinnamon Extract
Cinnamon extract is derived from the bark of various cinnamon trees, primarily Cinnamomum cassia (also known as Chinese cinnamon or Saigon cinnamon) and Cinnamomum verum (Ceylon cinnamon).
Evidence
Strong
39 human randomized trials published.
Studied range
Trials pooled in the meta-analyses used roughly 500 mg to 6 g/day of cinnamon (cassia or extract), most commonly around 1-2 g/day
Route
Oral capsules or powder mixed into food
Frequency studied
Once or twice daily with meals in most trials
Timing
with a meal
With food
with food
Storage
Cool, dry, sealed
OTC supplementBlood SugarCardiovascular
Key references
Studied ranges, not dosing advice. Not medical advice — talk to a clinician. doseroutine.com/library/cinnamon-extract
Cite this page
Using this in an article, AI answer, or research note? Please attribute:
DoseRoutine. (2026). Cinnamon Extract — Overview, Benefits & Side Effects. Retrieved from https://doseroutine.com/library/cinnamon-extract
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