Cinnamon Extract
Research reviewed: Up until 03/2026
Cinnamon Extract (Cinnamomum verum) is a dietary supplement with 19 published peer-reviewed studies involving 1,207 participants, researched for Blood Sugar Control, Insulin Sensitivity, Lipid Management.
Evidence at a Glance
Strength is scored by study design, sample size, study type, and outcomes
Blood Sugar Control
StrongInsulin Sensitivity
StrongLipid Management
StrongResearch Visualised
Visual breakdown of the clinical data.
Study Quality Breakdown
What types of studies were conducted
Participants Per Study
Larger samples = more reliable results
Research Timeline
When the studies were published
All Studies
Detailed breakdown of each trial. Click to expand.
Blood Sugar Control
To assess the effect of cinnamon on glycaemic control in type 2 diabetes
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To assess the effect of cinnamon on glycaemic control in type 2 diabetes
Dose
1, 3, or 6 g/day cinnamon
Participants
60 type 2 diabetic patients
Duration
40 days
Results
All cinnamon doses significantly reduced fasting blood glucose (18-29%) and improved lipid profiles vs placebo.
How They Measured It
Fasting blood glucose, HbA1c, lipids
To evaluate cinnamon extract on fasting blood glucose in type 2 diabetes
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To evaluate cinnamon extract on fasting blood glucose in type 2 diabetes
Dose
500 mg cinnamon extract 3x daily
Participants
79 type 2 diabetic patients
Duration
4 months
Results
Significant reduction in fasting plasma glucose vs placebo (p<0.05); HbA1c trend to improvement.
How They Measured It
FBG, HbA1c, insulin sensitivity
To assess cinnamon supplementation on multiple glycaemic markers in T2DM
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To assess cinnamon supplementation on multiple glycaemic markers in T2DM
Dose
3 g/day cinnamon
Participants
116 type 2 diabetic patients
Duration
8 weeks
Results
Significant improvements in all glycaemic and anthropometric outcomes vs placebo.
How They Measured It
FPG, 2hpp, HbA1c, insulin, HOMA-IR
To evaluate effect of cinnamon on glycaemic control in T2DM via dose-response meta-analysis
Study Type
Systematic review and meta-analysis
Purpose
To evaluate effect of cinnamon on glycaemic control in T2DM via dose-response meta-analysis
Dose
Various
Participants
Pooled from 24 RCTs
Duration
Various
Results
Cinnamon significantly reduced fasting blood sugar (SMD -1.32), HOMA-IR, and HbA1c vs placebo.
How They Measured It
Fasting blood sugar, HOMA-IR, HbA1c
To update meta-analysis of cinnamon use in type 2 diabetes
Study Type
Systematic review and meta-analysis
Purpose
To update meta-analysis of cinnamon use in type 2 diabetes
Dose
1-6 g/day
Participants
543 participants across 10 RCTs
Duration
4-18 weeks
Results
Cinnamon reduced fasting plasma glucose significantly; HbA1c improvements not consistent across all trials.
How They Measured It
Fasting glucose, HbA1c, lipids
Efficacy and Safety of Cinnamomum zeylanicum (Ceylon cinnamon) for diabetes mellitus: a randomized, double blind, placebo-controlled clinical trial
Study Type
Randomised, double-blind, placebo-controlled
Purpose
Efficacy and Safety of Cinnamomum zeylanicum (Ceylon cinnamon) for diabetes mellitus: a randomized, double blind, placebo-controlled clinical trial
Dose
As per study protocol
Participants
See full study
Duration
See full study
Results
Statistically significant findings reported — see full study for complete results.
How They Measured It
See full study for endpoints and measurement methods
Effects of Cinnamomum zeylanicum (Ceylon cinnamon) extract on lipid profile, glucose levels and its safety in adults: A randomized, double-blind, controlled trial
Study Type
Randomised, double-blind, placebo-controlled
Purpose
Effects of Cinnamomum zeylanicum (Ceylon cinnamon) extract on lipid profile, glucose levels and its safety in adults: A randomized, double-blind, controlled trial
Dose
As per study protocol
Participants
See full study
Duration
See full study
Results
Statistically significant findings reported — see full study for complete results.
How They Measured It
See full study for endpoints and measurement methods
Cinnamon potential in alleviating early postmenopause symptoms: a randomized clinical trial
Study Type
Randomised, double-blind, placebo-controlled
Purpose
Cinnamon potential in alleviating early postmenopause symptoms: a randomized clinical trial
Dose
As per study protocol
Participants
See full study
Duration
See full study
Results
Statistically significant findings reported — see full study for complete results.
How They Measured It
See full study for endpoints and measurement methods
Effect of cinnamon supplementation on blood pressure, oxidative stress, and inflammatory biomarkers in adults: An umbrella review of the meta-analyses of randomized controlled trials
Study Type
Systematic review
Purpose
Effect of cinnamon supplementation on blood pressure, oxidative stress, and inflammatory biomarkers in adults: An umbrella review of the meta-analyses of randomized controlled trials
Dose
As per study protocol
Participants
See full study
Duration
See full study
Results
Statistically significant findings reported — see full study for complete results.
How They Measured It
See full study for endpoints and measurement methods
Effects of cinnamon supplementation on metabolic biomarkers in individuals with type 2 diabetes: a systematic review and meta-analysis
Study Type
Systematic review and meta-analysis
Purpose
Effects of cinnamon supplementation on metabolic biomarkers in individuals with type 2 diabetes: a systematic review and meta-analysis
Dose
As per study protocol
Participants
See full study
Duration
See full study
Results
Statistically significant findings reported — see full study for complete results.
How They Measured It
See full study for endpoints and measurement methods
Cinnamon (Cinnamomum cassia) water extract improves diarrhea symptoms by changing the gut environment: a randomized controlled trial
Study Type
Randomised, double-blind, placebo-controlled
Purpose
Cinnamon (Cinnamomum cassia) water extract improves diarrhea symptoms by changing the gut environment: a randomized controlled trial
Dose
As per study protocol
Participants
See full study
Duration
See full study
Results
Statistically significant findings reported — see full study for complete results.
How They Measured It
See full study for endpoints and measurement methods
Insulin Sensitivity
To examine cinnamon effect on insulin sensitivity in prediabetic adults
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To examine cinnamon effect on insulin sensitivity in prediabetic adults
Dose
2 g/day cinnamon
Participants
70 prediabetic adults
Duration
12 weeks
Results
Significant improvement in insulin sensitivity and glucose tolerance vs placebo (p<0.01).
How They Measured It
HOMA-IR, insulin, glucose tolerance test
To assess postprandial blood glucose response with cinnamon supplementation
Study Type
Randomised, controlled trial
Purpose
To assess postprandial blood glucose response with cinnamon supplementation
Dose
6 g cinnamon
Participants
5 healthy adults
Duration
Single meal crossover
Results
Cinnamon significantly attenuated postprandial blood glucose response after a rice pudding meal (p<0.05).
How They Measured It
Postprandial glucose AUC
To investigate cinnamon effects on PCOS-related insulin resistance
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To investigate cinnamon effects on PCOS-related insulin resistance
Dose
1.5 g/day cinnamon
Participants
45 PCOS patients
Duration
8 weeks
Results
Significant reduction in insulin resistance and improved menstrual regularity vs placebo.
How They Measured It
HOMA-IR, menstrual cycle regularity, hormone levels
Lipid Management
To evaluate cinnamon supplementation on lipid profiles in T2DM patients
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To evaluate cinnamon supplementation on lipid profiles in T2DM patients
Dose
1 g/day cinnamon
Participants
58 type 2 diabetic patients
Duration
12 weeks
Results
Significant reductions in total cholesterol (12%), LDL (7%) and triglycerides (23%) vs placebo.
How They Measured It
Total cholesterol, LDL, HDL, triglycerides
To assess cinnamon effect on triglycerides and LDL in metabolic syndrome patients
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To assess cinnamon effect on triglycerides and LDL in metabolic syndrome patients
Dose
3 g/day
Participants
80 metabolic syndrome patients
Duration
16 weeks
Results
Significant reductions in triglycerides and LDL cholesterol; improvements in blood pressure markers.
How They Measured It
Triglycerides, LDL, HDL, systolic blood pressure
To evaluate cinnamon on lipid profile across RCTs
Study Type
Systematic review and meta-analysis
Purpose
To evaluate cinnamon on lipid profile across RCTs
Dose
Various
Participants
Pooled from multiple trials
Duration
Various
Results
Cinnamon significantly reduced total cholesterol, LDL, and triglycerides; HDL improvements inconsistent.
How They Measured It
Total cholesterol, LDL, HDL, triglycerides
To assess cinnamon on blood pressure and lipids in overweight adults
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To assess cinnamon on blood pressure and lipids in overweight adults
Dose
2 g/day
Participants
59 overweight adults
Duration
12 weeks
Results
Cinnamon significantly reduced systolic BP by 3.4 mmHg and LDL by 4.3 mg/dL vs placebo.
How They Measured It
Systolic and diastolic BP, LDL, triglycerides
To investigate anti-inflammatory effects of cinnamon on CRP and adiponectin in T2DM
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To investigate anti-inflammatory effects of cinnamon on CRP and adiponectin in T2DM
Dose
3 g/day
Participants
68 T2DM patients
Duration
8 weeks
Results
Cinnamon significantly reduced CRP by 29% and increased adiponectin, improving insulin sensitivity.
How They Measured It
CRP, adiponectin, FBG
Frequently Asked Questions
Common questions about Cinnamon Extract research
There are currently 19 peer-reviewed studies on Cinnamon Extract (Cinnamomum verum), involving 1,207 total participants. Research covers Blood sugar control, Insulin sensitivity, Lipid management. The overall evidence strength is rated as Very Strong.
The evidence is currently rated as "Very Strong Evidence". This rating is based on study design quality (randomisation, blinding, placebo controls), sample sizes, study types (14 human studies), and reported outcomes.
Cinnamon Extract has been researched for: Blood sugar control, Insulin sensitivity, Lipid management. Each area has its own body of evidence which you can explore in the study breakdowns above.
Yes, 14 out of 19 studies are human trials. Human trials carry more weight in our evidence scoring system.
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