Cinnamon Bark Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Cinnamon Bark against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Cinnamon Bark is a dietary supplement by Mountain Meadow Herbs with 4 active ingredients. Its ingredients are commonly taken for blood sugar support, digestive upset, antioxidant support.Based on those ingredients, 442 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Cinnamon bark extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Cinnamon Bark by Mountain Meadow Herbs
Ask about any prescription or over-the-counter medication and we check it for interactions with Cinnamon Bark by Mountain Meadow Herbs — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Cinnamon Bark by Mountain Meadow Herbs
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Low disclosure
This liquid contains 4 ingredients, with cinnamon bark extract as the active component — the part that gives the product its intended effect. The other ingredients are distilled water, organic grain alcohol (used as a preservative and extraction medium in herbal liquids), and vegetable glycerin (a common thickener and sweetener in supplements).
There are no inactive fillers listed beyond these.
Does it work?
Strong evidence
The evidence for cinnamon bark on the conditions listed — amenorrhea, angina, common cold, diabetes, diarrhea, and dyslipidemia — is insufficient to rate. That means we don't have reliable data showing it works for any of these.
Vegetable glycerin, the other active component, is likely effective for constipation and possibly effective for athletic performance, though that's not what this product is typically marketed for.
How safe is it?
Well-documented data
Cinnamon bark is generally well tolerated at food amounts, but this is a supplement dose. The main concern is liver safety with high doses or long-term use because of coumarin content; large amounts over time might harm the liver.
Avoid high-dose cinnamon supplements during pregnancy — food amounts are likely fine, but the concentrated supplement form lacks safety data. A small number of people reported mild side effects: one person developed a rash, and one had contact dermatitis after eating cinnamon-containing foods (they had a prior allergy to cinnamic alcohol).
One person also had a low blood sugar event (hypoglycemic seizure) during a trial, though it's unclear if cinnamon caused it.
Meds to double-check
Moderate interaction found
Before taking this product, check your medications against the tool on this page if you take any drugs that harm the liver (hepatotoxic drugs) or any diabetes medications — cinnamon bark may intensify the effects of both. We could not check distilled water or grain alcohol for interactions.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
If you take diabetes medications or drugs that stress the liver, you'll want to check with your doctor or pharmacist before starting this product — the cinnamon bark may affect how those drugs work. If you're pregnant or breastfeeding, ask your own healthcare provider whether this supplement dose is right for you.
Otherwise, at the doses used in trials, cinnamon bark was generally tolerated, though long-term safety data is limited.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 25, 2020.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Cinnamon Bark, straight from the product label.
| Brand | Mountain Meadow Herbs |
|---|---|
| Barcode (UPC) | 813086014270 |
| Net contents | 4 fl. Oz.; 120 mL |
| Market status | On market |
| Date entered into DSLD | Jan 25, 2020 |
| DSLD ID | 212566 |
| Product type | Other Combinations |
| Supplement form | Liquid |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Children 4 or More Years of Age, Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free, Sugar Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Cinnamon Bark by Mountain Meadow Herbs, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| distilled Water | 0 NP | -- |
| Cinnamon bark extract | 1.25 mL | -- |
| organic Grain Alcohol | 0 NP | -- |
| Vegetable Glycerin | 0 NP | -- |
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Formula
Cinnamomum verum Hand-made extract
FDA Statement of Identity
Herbal Dietary Supplement
Formulation
GF (Gluten Free) Sugar Free
Vegan
Suggested/Recommended/Usage/Directions
Suggested Use: 3-11 yrs: 1/8 tsp. 12+ yrs: 1/4 tsp. Take in water 1-3 times daily.
Shake well.
Use as part of a healthy diet to maintain healthy blood sugar levels.
Precautions
Caution: If you are pregnant, nursing, have a medical condition, or are taking a prescription, consult your health care provider before using this product.
Keep out of reach of children.
Storage
Store in a cool, dry place out of sunlight.
Seals/Symbols
Made in Montana USA
General Statements
1 dropperful = approx. 1/8 tsp.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Cinnamon Bark by Mountain Meadow Herbs label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Cinnamon Bark by Mountain Meadow Herbs
These are the 4 active ingredients this product is made of. Select any to open its full monograph.
Serving size0.25 Teaspoon(s) Dosage formLiquid Servings per container96 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Distilled Water
Cinnamon bark extract
Interacts with442 drugs
Cassia cinnamon is the common, inexpensive cinnamon used in cooking, and it is also taken as a supplement, most often for blood sugar support. The evi...
Cinnamon bark extract monograph & interactionsOrganic Grain Alcohol
Vegetable Glycerin
No knowninteractions
Glycerol (glycerin) is a sweet, syrupy compound made naturally in the body and widely used in foods, skin products, and medicines. It is well establis...
Vegetable Glycerin monograph & interactionsCinnamon Bark by Mountain Meadow Herbs Drug Interactions
HelloPharmacist Interaction Report
Cinnamon Bark by Mountain Meadow Herbs can interact with medications, mainly through its cinnamon bark extract.
The most serious concern is with drugs that stress the liver (hepatotoxic drugs) — at high doses and over long periods, cinnamon bark may add to that burden. Coumarin, a compound in cinnamon, can harm the liver in animal studies; human cases at very high doses (50,000 mg or more daily) have shown liver injury that improved after stopping.
Read the full breakdown — every affected drug type, severity by severity
Cinnamon bark may also lower blood sugar levels, so it could work additively with diabetes medications — meaning your blood sugar might drop more than expected. If you take diabetes drugs, your doctor may need to adjust your dose.
We could not check distilled water or organic grain alcohol for interactions. Vegetable glycerin, checked in our data, shows no documented interactions.
Altogether, these interactions span 443 individual medications. Run your exact prescriptions through the medication checker on this page before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Cinnamon Bark?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Cinnamon Bark interact with 442 drugs. Click any drug to see the details.
1 of the 4 ingredients in Cinnamon Bark interact with drugs. Each result below shows which ingredient is responsible. Cinnamon bark extract
Acetaminophen, Pamabrom, PyrilamineMidol Max Strength PMS, Pamprin, Pamprin ES
How Acetaminophen, Pamabrom, Pyrilamine interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Pamabrom, Pyrilamine interactionAcetaminophen, PentazocineTalacen
How Acetaminophen, Pentazocine interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Pentazocine interactionAcetaminophen, Phenylephrine, ChlorpheniramineSuper Cold Tabs
How Acetaminophen, Phenylephrine, Chlorpheniramine interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Phenylephrine, Chlorpheniramine interactionAcetaminophen, PhenylpropanolamineTetra Caps
How Acetaminophen, Phenylpropanolamine interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Phenylpropanolamine interactionAcetaminophen, Phenylpropanolamine, PhenyltoloxamineSinubid
How Acetaminophen, Phenylpropanolamine, Phenyltoloxamine interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Phenylpropanolamine, Phenyltoloxamine interactionAcetaminophen, PhenyltoloxaminePercogesic, Relagesic
How Acetaminophen, Phenyltoloxamine interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Phenyltoloxamine interactionAcetaminophen, Phenyltoloxamine, SalicylamideLobac
How Acetaminophen, Phenyltoloxamine, Salicylamide interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Phenyltoloxamine, Salicylamide interactionAcetaminophen, PropoxypheneDarvocet-N 100, Darvocet-N 50, E-Lor, Wygesic
How Acetaminophen, Propoxyphene interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Propoxyphene interactionAcetaminophen, PseudoephedrineChildren's Tylenol Sinus, Dristan N.D., Non-Aspirin Sinus, Ornex, Ornex-Max, Sinutab +5 more
How Acetaminophen, Pseudoephedrine interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Pseudoephedrine interactionAcetaminophen, Pseudoephedrine, TriprolidineActifed Plus ES
How Acetaminophen, Pseudoephedrine, Triprolidine interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetaminophen, Pseudoephedrine, Triprolidine interactionAcetohexamideDymelor
How Acetohexamide interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs, Antidiabetes Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Acetohexamide interactionAdagrasibKrazati
How Adagrasib interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Adagrasib interactionAlbiglutideTanzeum
How Albiglutide interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, cassia cinnamon may have additive effects with antidiabetes drugs.
Read the full Cinnamon Bark Extract + Albiglutide interactionAldesleukinProleukin
How Aldesleukin interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Aldesleukin interactionAlectinib HydrochlorideAlecensa
How Alectinib Hydrochloride interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Alectinib Hydrochloride interactionAllopurinolCaplenal, Cosuric, Rimapurinol, Zyloprim, Zyloric
How Allopurinol interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Allopurinol interactionAlogliptinNesina
How Alogliptin interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs, Antidiabetes Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Alogliptin interactionAlogliptin, MetforminKazano
How Alogliptin, Metformin interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, cassia cinnamon may have additive effects with antidiabetes drugs.
Read the full Cinnamon Bark Extract + Alogliptin, Metformin interactionAlogliptin, PioglitazoneOseni
How Alogliptin, Pioglitazone interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs, Antidiabetes Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Alogliptin, Pioglitazone interactionAmbrisentanLetairis, Volibris
How Ambrisentan interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Ambrisentan interactionAminosalicylic AcidPaser
How Aminosalicylic Acid interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Aminosalicylic Acid interactionAmiodaroneCordarone, Pacerone
How Amiodarone interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Amiodarone interactionAmoxicillinAmix, Amoram, Amoxident, Amoxil Capsules, Amoxil Injection, Galenamox +3 more
How Amoxicillin interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Amoxicillin interactionAmoxicillin VeterinaryBiomox
How Amoxicillin Veterinary interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Amoxicillin Veterinary interactionAmoxicillin, Clavulanate PotassiumAugmentin, Augmentin '125/31 SF', Augmentin '250/62 SF', Augmentin XR, Augmentin-Duo 400/57, Clavulin
How Amoxicillin, Clavulanate Potassium interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Amoxicillin, Clavulanate Potassium interactionAmoxicillin, Omeprazole Magnesium, RifabutinTalicia
How Amoxicillin, Omeprazole Magnesium, Rifabutin interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Amoxicillin, Omeprazole Magnesium, Rifabutin interactionAmphotericin, TetracyclineMysteclin-F
How Amphotericin, Tetracycline interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Amphotericin, Tetracycline interactionAnidulafunginEraxis
How Anidulafungin interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Anidulafungin interactionAntidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) InhibitorGlyxambi
How Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, cassia cinnamon may have additive effects with antidiabetes drugs.
Read the full Cinnamon Bark Extract + Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interactionAprocitentanTryvio
How Aprocitentan interacts with Cinnamon Bark — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Bark ExtractHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Bark Extract + Aprocitentan interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Cinnamon Bark with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Cinnamon bark extract
Antidiabetes Drugs
Theoretically, cassia cinnamon may have additive effects with antidiabetes drugs.
Cassia cinnamon may lower blood glucose levels, and have additive effects in patients treated with antidiabetic agents. Dose adjustments to diabetes medications might be necessary.
Hepatotoxic Drugs
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
There is some concern that ingesting large amounts of cassia cinnamon for an extended duration might cause hepatotoxicity in some people. Cassia cinnamon contains coumarin, which can cause hepatotoxicity in animal models. In humans, very high doses of coumarin from 50-7000 mg/day can result in hepatotoxicity that resolves when coumarin use is discontinued. Lower amounts might also cause liver problems in sensitive people, such as those with liver disease or those taking potentially hepatotoxic agents.
Brand information
Manufacturer and brand details for Cinnamon Bark, from the product label.
Mountain Meadow Herbs
See all Mountain Meadow Herbs products- Name
- Mountain Meadow Herbs, Inc.
- Street Address
- 1019 Hard Rock Rd
- City
- Somers
- State
- MT
- ZipCode
- 59932
- Phone Number
- 888.528.8615
- Web Address
- www.mmherbs.com
Cinnamon Bark by Mountain Meadow Herbs: Common Questions
Does Cinnamon Bark by Mountain Meadow Herbs interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Does cinnamon bark actually lower blood sugar?
Is this safe to take long-term?
Can I take this while pregnant?
What are the side effects?
What's the grain alcohol in this for?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Cinnamon Bark is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Cinnamon Bark’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Cassia Cinnamon
Interacts with 442 drugsCassia cinnamon is the common, inexpensive cinnamon used in cooking, and it is also taken as a supplement, most often for blood sugar support. The evidence for its health benefits is mixed a...
Read the full Cassia Cinnamon monograph → Herb & supplement monographGlycerol
Glycerol (glycerin) is a sweet, syrupy compound made naturally in the body and widely used in foods, skin products, and medicines. It is well established as a laxative and a skin and eye moi...
Read the full Glycerol monograph →Sources & How We Checked
Cinnamon Bark's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 28 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Cassia Cinnamon 20 references
- Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
- Khan A, Safdar M, Ali Khan M, et al. Cinnamon improves glucose and lipids of people with type 2 diabetes. Diabetes Care 2003;26:3215-8. PubMed
- De Benito V, Alzaga R. Occupational allergic contact dermatitis from cassia (Chinese cinnamon) as a flavouring agent in coffee. Contact Dermatitis 1999;40:165. PubMed
- Drake TE, Maibach HI. Allergic contact dermatitis and stomatitis caused by a cinnamic aldehyde-flavored toothpaste. Arch Dermatol 1976;112:202-3.
- Press release. Cinnamon capsules to reduce blood sugar are medicinal products! Efficacy has not been scientifically proven - some products contain high levels of coumarin. Federal Institute of Risk Assessment (BfM), Germany, November 11, 2006. Available a
- Felter SP, Vassallo JD, Carlton BD, Daston GP. A safety assessment of coumarin taking into account species-specificity of toxicokinetics. Food Chem Toxicol 2006;44:462-75. PubMed
- Crawford P. Effectiveness of cinnamon for lowering hemoglobin A1C in patients with type 2 diabetes: a randomized, controlled trial. J Am Board Fam Med 2009;22:507-12. PubMed
- Akilen, R., Tsiami, A., Devendra, D., and Robinson, N. Glycated haemoglobin and blood pressure-lowering effect of cinnamon in multi-ethnic Type 2 diabetic patients in the UK: a randomized, placebo-controlled, double-blind clinical trial. Diabet.Med. 2010; PubMed
- Lu T, Sheng H Wu J Cheng Y Zhu J Chen Y. Cinnamon extract improves fasting blood glucose and glycosylated hemoglobin level in Chinese patients with type 2 diabetes. Nutr Res. 2012;32(6):408-412. PubMed
- Choi, J., Lee, K. T., Ka, H., Jung, W. T., Jung, H. J., and Park, H. J. Constituents of the essential oil of the Cinnamomum cassia stem bark and the biological properties. Arch Pharm Res 2001;24(5):418-423.
- Altschuler JA, Casella SJ, MacKenzie TA, Curtis KM. The effect of cinnamon on A1C among adolescents with type 1 diabetes. Diabetes Care 2007;30(4):813-6. PubMed
- Stoecker BR, Zhan Z, Luo R, et al. Cinnamon extract lowers blood glucose in hyperglycemic subjects. FASEB J. 2010;22:722.1 (Abstract only). DOI
- Admani S, Hill H, Jacob SE. Cinnamon Sugar Scrub Dermatitis: "Natural" Is Not Always Best. Pediatr Dermatol. 2017;34(1):e42-e43. PubMed
- Isaac-Renton M, Li MK, Parsons LM. Cinnamon spice and everything not nice: many features of intraoral allergy to cinnamic aldehyde. Dermatitis. 2015;26(3):116-21. PubMed
- Vandersall A, Katta R. Eyelid dermatitis as a manifestation of systemic contact dermatitis to cinnamon. Dermatitis. 2015 Jul-Aug;26(4):189. PubMed
- Wickenberg J, Lindstedt S, Nilsson J, Hlebowicz J. Cassia cinnamon does not change the insulin sensitivity or the liver enzymes in subjects with impaired glucose tolerance. Nutr J 2014 Sep 24;13:96. PubMed
- Brancheau D, Patel B, Zughaib M. Do cinnamon supplements cause acute hepatitis? Am J Case Rep 2015;16:250-4. PubMed
- Shekarchizadeh-Esfahani P, Heydarpour F, Izadi F, Jalili C. The effect of cinnamon supplementation on liver enzymes in adults: A systematic review and meta-analysis of randomized controlled trials. Complement Ther Med 2021;58:102699. PubMed
- Bernaola J, Valverde-Monge M, Otal-Buesa M, Cullen D, Heras-Mendaza F. Cinnamon allergic contact cheilitis. Contact Dermatitis 2023;88(5):418-419. PubMed
- Patel K, Howard M, Tate B. Cheilitis caused by allergic contact dermatitis to cinnamon in chai tea: A case report. Contact Dermatitis 2023;88(3):239-240. PubMed
Glycerol 8 references
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Wagner DR. Hyperhydrating with glycerol: implications for athletic performance. J Am Diet Assoc 1999;99:207-12. PubMed
- Yu YL, Kumana CR, Lauder IJ, et al. Treatment of acute cortical infarct with intravenous glycerol. A double-blind, placebo-controlled randomized trial. Stroke 1993;24:1119-24. PubMed
- Frei A, Cottier C, Wunderlich P, Ludin E. Glycerol and dextran combined in the therapy of acute stroke. A placebo-controlled, double-blind trial with a planned interim analysis. Stroke 1987;18:373-9. PubMed
- Balaskas E, Szepietowski JC, Bessis D, Ioannides D, Ponticelli C, Ghienne C, Taberly A, Dupuy P. Randomized, double-blind study with glycerol and paraffin in uremic xerosis. Clin J Am Soc Nephrol. 2011 Apr;6(4):748-52. PubMed
- Blanchet-Bardon C, Tadini G, Machado Matos M, Delarue A. Association of glycerol and paraffin in the treatment of ichthyosis in children: an international, multicentric, randomized, controlled, double-blind study. J Eur Acad Dermatol Venereol. 2012 Aug;26 PubMed
- Kajita N, Kanamori K, Yamamoto S, Yoshida K. Generalized Urticaria Caused by a Glycerin Enema in an Infant. J Investig Allergol Clin Immunol 2022;32(4):318-319. PubMed
- Suzuki R, Fukuyama K, Miyazaki Y, Namiki T. Contact urticaria syndrome and protein contact dermatitis caused by glycerin enema. JAAD Case Reports. 2016;2:108-10. PubMed
Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC