Cinnamon Extract
Herb ·Exploratory record · not publication-reviewed ·Updated July 13, 2026
Cinnamon extract is a concentrated form of Cinnamomum bark studied for modest improvements in fasting glucose, insulin sensitivity, and blood lipids. Effects are variable and should not replace diabetes medication, nutrition therapy, or glucose monitoring. Cassia cinnamon can contain substantial coumarin, so Ceylon or low-coumarin extracts are preferred for longer use.
Exploratory record, not a reviewed medical publication.
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What the research says.
A quick, data-only summary. The full evidence, dosing, and sources are below.
Cinnamon Extract is a herb most often used for may modestly lower fasting glucose, may improve insulin sensitivity markers, may modestly lower triglycerides and ldl-c in some studies. NutriStack rates the overall evidence as moderate. A typical adult dose is 500-2,000 mg/day standardized extract or 1-6 g/day cinnamon powder, preferably low-coumarin for longer use, commonly taken as ceylon cinnamon or low-coumarin water extract standardized for polyphenols. This profile indexes 3 sources.
The bottom line
Evidence rating moderate. Most-documented uses: may modestly lower fasting glucose, may improve insulin sensitivity markers, may modestly lower triglycerides and ldl-c in some studies. 3 sources indexed (2003–2013), with 0 interaction records on file.
How it works, mechanistically.
Core mechanism
Cinnamon polyphenols and cinnamaldehyde appear to influence insulin receptor signaling, glucose transporter activity, AMPK-related pathways, gastric emptying, and digestive enzyme activity. These mechanisms may blunt post-meal glucose excursions and modestly improve insulin sensitivity in some people. Cassia cinnamon also contains coumarin, which can stress the liver in susceptible users, making species and standardization clinically important.1,2
Dosing & protocol.
Take with carbohydrate-containing meals for glucose-response goals. Water extracts may reduce coumarin exposure compared with whole cassia powder.1,3
What it actually costs.
Real-world pricing across three quality tiers. Assumes Low-coumarin cinnamon extract capsule.
Ceylon and verified low-coumarin extracts cost more but are preferable for repeated use. Updated 2026-06-04.
Full safety detail.
Side effects
- Heartburn or stomach upset
- Mouth irritation or allergy
- Possible low blood glucose when combined with glucose-lowering agents
- Liver enzyme elevation risk from high-coumarin cassia products
Contraindications
Sources, by evidence tier.
Numbered references. Citations throughout the page link here.
Meta-analyses & systematic reviews
1- 1Cinnamon use in type 2 diabetes: an updated systematic review and meta-analysisAllen RW et al. · Annals of Family Medicine · 2013
Cinnamon was associated with reductions in fasting plasma glucose and several lipid measures, while HbA1c effects were less consistent.
Randomized controlled trials
1- 2Cinnamon improves glucose and lipids of people with type 2 diabetesKhan A et al. · Diabetes Care · 2003
Daily cinnamon intake was associated with lower fasting glucose, triglycerides, LDL-C, and total cholesterol in adults with type 2 diabetes.
Reference material
1- 3Coumarin in cinnamon and tonka bean extracts: its occurrence and safety assessmentAbraham K et al. · Molecular Nutrition and Food Research · 2010
Coumarin exposure varies widely by cinnamon species and can exceed tolerable intakes with frequent cassia use.
Common questions.
Quick answers about Cinnamon Extract, drawn from the data on this page.
What is Cinnamon Extract?
Cinnamon extract is a concentrated form of Cinnamomum bark studied for modest improvements in fasting glucose, insulin sensitivity, and blood lipids. Effects are variable and should not replace diabetes medication, nutrition therapy, or glucose monitoring. Cassia cinnamon can contain substantial coumarin, so Ceylon or low-coumarin extracts are preferred for longer use.
What is Cinnamon Extract used for?
Commonly cited benefits of Cinnamon Extract include: May modestly lower fasting glucose; May improve insulin sensitivity markers; May modestly lower triglycerides and LDL-C in some studies; Provides antioxidant polyphenols; May blunt postprandial glucose response when used with meals. NutriStack rates the overall evidence as moderate.
What is a typical dose of Cinnamon Extract?
A typical adult dose of Cinnamon Extract is 500-2,000 mg/day standardized extract or 1-6 g/day cinnamon powder, preferably low-coumarin for longer use. The commonly recommended form is Ceylon cinnamon or low-coumarin water extract standardized for polyphenols. These are general ranges, not personalized advice; confirm the right dose with a clinician.
What are the side effects of Cinnamon Extract?
Reported side effects include heartburn or stomach upset, mouth irritation or allergy, possible low blood glucose when combined with glucose-lowering agents, liver enzyme elevation risk from high-coumarin cassia products. This is educational information; check with a healthcare professional before use.
How strong is the evidence for Cinnamon Extract?
NutriStack rates this as Moderate, meaning several aligned RCTs or one large RCT plus supporting reviews. Full tier criteria are at https://nutristackapp.com/methodology/evidence-tiers.
Use this with your stack
Cinnamon Extract in NutriStack.
Add it to your stack, see how it interacts with everything else you take, and get a Stack Score that updates the moment it does.