# Ceylon Cinnamon (Cinnamomum verum)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/ceylon-cinnamon
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-23
**Evidence Score:** 6 / 10
**Category:** Other
**Also Known As:** Cinnamomum verum, True cinnamon, Sri Lankan cinnamon, Soft cinnamon, Sweet cinnamon, Kurundu, Dalchini

## Overview

Ceylon cinnamon (Cinnamomum verum) contains cinnamaldehyde and proanthocyanidins that support glucose metabolism and [cardiovascular health](/ingredients/condition/heart-health). These compounds work by enhancing [insulin sensitivity](/ingredients/condition/weight-management) and reducing [inflammatory](/ingredients/condition/inflammation) markers associated with metabolic dysfunction.

## Health Benefits

["\u2022 Supports Healthy Cholesterol Levels: A phase I trial in 30 healthy adults found that daily doses up to 500 mg significantly reduced total cholesterol and LDL-cholesterol (PMID: 28962661). Evidence quality: Preliminary.", "\u2022 Improves Glycemic Control in T2DM: A 4-month RCT with 210 type 2 diabetes patients showed that 250-500 mg daily significantly lowered fasting plasma glucose and HbA1c (PMID: 41412108). Evidence quality: Moderate.", "\u2022 Enhances [Insulin Sensitivity](/ingredients/condition/weight-management): The same RCT in T2DM patients demonstrated significant improvements in insulin resistance and \u03b2-cell function compared to placebo (PMID: 41412108). Evidence quality: Moderate.", "\u2022 Reduces LDL-Cholesterol in T2DM: In the T2DM trial, the 500 mg dose group experienced a significant reduction in total and [LDL cholesterol](/ingredients/condition/heart-health), reinforcing its lipid-lowering effects (PMID: 41412108). Evidence quality: Moderate.", "\u2022 May Aid Weight Management: While evidence for glycemic control is mixed across studies, some meta-analyses indicate a potential for Ceylon Cinnamon to support reductions in BMI and body weight (PMIDs: 24019277, 35365881). Evidence quality: Mixed."]

## Mechanism of Action

Ceylon cinnamon's primary bioactive compound cinnamaldehyde activates insulin receptors and enhances glucose uptake in skeletal muscle cells. Proanthocyanidins inhibit α-glucosidase and α-amylase enzymes, slowing carbohydrate [digestion](/ingredients/condition/gut-health) and glucose absorption. The compound also modulates HMG-CoA reductase activity, contributing to cholesterol-lowering effects.

## Clinical Summary

A phase I trial in 30 healthy adults showed daily doses up to 500 mg significantly reduced total cholesterol and LDL-cholesterol levels. A 4-month randomized controlled trial with 210 type 2 diabetes patients demonstrated improved glycemic control parameters. Current evidence is preliminary but promising, with most studies using standardized extracts containing 1-3% cinnamaldehyde. Larger, longer-term trials are needed to establish definitive therapeutic protocols.

## Nutritional Profile

Ceylon Cinnamon (Cinnamomum verum) bark powder (per 100g serving as reference): Calories ~247 kcal, Carbohydrates ~80.6g (of which dietary fiber ~53.1g, representing its dominant macronutrient), Protein ~3.99g, Total Fat ~1.24g (primarily linolenic and oleic acids). Key Micronutrients: Calcium ~1002mg (high bioavailability concern due to lower oxalate content vs. Cassia), Iron ~8.32mg, Manganese ~17.5mg (exceptionally high, ~760% DV), Magnesium ~60mg, Phosphorus ~64mg, Potassium ~431mg, Vitamin K ~31.2mcg, Vitamin A ~15 IU, small amounts of B vitamins (B1 ~0.022mg, B2 ~0.041mg, B6 ~0.158mg). Bioactive Compounds: Cinnamaldehyde (primary volatile oil constituent, ~50-90% of essential oil, responsible for flavor and many bioactivities), Eugenol (~1-5% of essential oil, significantly higher proportion than in Cassia, contributing [anti-inflammatory](/ingredients/condition/inflammation) properties), Cinnamyl acetate, Linalool, and Beta-caryophyllene in the essential oil fraction. Polyphenols: Procyanidin type-A polymers (condensed tannins, primarily cinnamtannin B1), Epicatechin, Catechin, and Quercetin glycosides (~8,000-12,000 mg gallic acid equivalents per 100g ORAC value). Type-A procyanidins are linked to insulin-mimetic activity. Crucially, Ceylon cinnamon contains very low levels of Coumarin (<0.004% dry weight, approximately 0.017mg/g vs. Cassia's 1-12mg/g), making it significantly safer for regular consumption. The water-soluble polyphenolic polymer fraction (MHCP - methylhydroxychalcone polymer) at estimated 1-3% dry weight is considered a primary contributor to glycemic benefits. Fiber is predominantly insoluble (~80% of total fiber), with some pectin fractions. Bioavailability notes: Cinnamaldehyde is rapidly absorbed through the GI tract but undergoes extensive first-pass [metabolism](/ingredients/condition/weight-management) to cinnamic acid and hippuric acid; bioavailability of intact cinnamaldehyde is low but metabolites remain biologically active. Polyphenol absorption is moderate and enhanced with fat co-ingestion; the polymer MHCP may have limited direct absorption but exerts local intestinal effects.

## Dosage & Preparation

Clinical trials have used non-standardized water extracts. A phase I study in healthy adults used escalating daily doses from 85 mg to 500 mg over three months. An RCT in type 2 diabetes patients used 250 mg and 500 mg daily for four months. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Ceylon cinnamon is generally well-tolerated at therapeutic doses up to 6 grams daily. Unlike Cassia cinnamon, Ceylon contains minimal coumarin, reducing hepatotoxicity risk. May enhance effects of diabetes medications, requiring [blood glucose](/ingredients/condition/weight-management) monitoring. Pregnant and nursing women should avoid supplemental doses due to insufficient safety data.

## Scientific Research

Clinical evidence includes a phase I trial in 30 healthy adults showing cholesterol reduction (PMID: 28962661) and a randomized controlled trial in 210 type 2 diabetes patients demonstrating improved glycemic control and lipid profiles (PMID: 41412108). However, meta-analyses report mixed results on its glycemic effects, highlighting the need for larger, longer-term studies (PMIDs: 24019277, 35365881).

## Historical & Cultural Context

Ceylon Cinnamon has been used for millennia in Sri Lankan Ayurvedic and South Asian traditional medicine. It was historically employed for its purported [antimicrobial](/ingredients/condition/immune-support), [antioxidant](/ingredients/condition/antioxidant), [blood glucose](/ingredients/condition/weight-management)-lowering, and [cardiovascular](/ingredients/condition/heart-health) benefits, which has prompted modern clinical investigation.

## Synergistic Combinations

Berberine, Alpha-Lipoic Acid, Chromium, Fenugreek

## Frequently Asked Questions

### What's the difference between Ceylon and Cassia cinnamon?

Ceylon cinnamon (Cinnamomum verum) contains less than 0.05% coumarin compared to Cassia's 0.1-12.2%. This makes Ceylon significantly safer for regular supplementation, as high coumarin intake can cause liver damage.

### How much Ceylon cinnamon should I take for blood sugar?

Clinical studies typically use 120-500 mg of standardized Ceylon cinnamon extract daily. For whole powder, effective doses range from 1-6 grams daily, divided into 2-3 doses with meals.

### Can Ceylon cinnamon interact with diabetes medications?

Yes, Ceylon cinnamon may enhance the glucose-lowering effects of metformin, insulin, and sulfonylureas. Monitor blood sugar closely and consult your healthcare provider before combining supplements with diabetes medications.

### How long does it take for Ceylon cinnamon to work?

Blood sugar improvements may be noticed within 1-2 weeks of consistent use. Cholesterol benefits typically appear after 4-6 weeks of supplementation at therapeutic doses, based on clinical trial timelines.

### Is Ceylon cinnamon safe during pregnancy?

While culinary amounts are safe, supplemental doses of Ceylon cinnamon should be avoided during pregnancy and breastfeeding. There's insufficient research on safety at therapeutic doses during these periods.

### What is the most bioavailable form of Ceylon cinnamon for cholesterol support?

Standardized extracts and water-soluble formulations of Ceylon cinnamon demonstrate higher bioavailability than whole spice, as they concentrate active compounds like cinnamaldehyde and polyphenols. Capsule forms with 250–500 mg doses have been used in clinical trials showing cholesterol benefits, while ground powder mixed with fat or taken with meals can improve absorption due to the lipophilic nature of cinnamon's active constituents. If maximum bioavailability is your goal, standardized extracts studied in peer-reviewed trials are preferable to bulk powder.

### Who benefits most from Ceylon cinnamon supplementation?

Adults with elevated fasting glucose, type 2 diabetes, or elevated cholesterol levels show the strongest evidence for benefit from Ceylon cinnamon at 250–500 mg daily doses. Individuals with metabolic syndrome or prediabetes may also benefit from its effects on blood sugar and lipid profiles. Those seeking cardiovascular support through natural means alongside conventional treatment represent another population with documented clinical benefit.

### How does Ceylon cinnamon's research quality compare to other spice-based supplements?

Ceylon cinnamon has moderate-to-good clinical evidence from multiple randomized controlled trials in type 2 diabetes and cholesterol management, positioning it above many botanical supplements with only preliminary data. However, most studies use relatively small sample sizes (30–210 participants) and short durations (3–4 months), limiting the strength of conclusions to 'preliminary' or 'promising' rather than definitive. Larger, longer-term studies are needed to establish optimal dosing and effects in broader populations compared to pharmaceutical standards.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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