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Effect of Ceylon cinnamon in lowering blood glucose for type 2 diabetes mellitus

Effectiveness of Cinnamomum zeylanicum (Ceylon cinnamon) in lowering blood glucose in type 2 diabetes mellitus: a Randomized Double Blind Placebo Controlled Clinical Trial

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
SLCTR
Registry ID
SLCTR/2017/010
Enrollment
Unknown
Registered
2017-04-05
Start date
2017-05-01
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Type 2 Diabetes Mellitus

Interventions

The study will be carried out at Medical Clinics of the University Medical Unit, National Hospital of Sri Lanka. Consenting participants meeting inclusion/exclusion criteria will be randomized into 3

Sponsors

University of Colombo
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1. Male and female patients aged 18 – 70 years 2. Diagnosed type 2 diabetes mellitus during the last 5 years 3. Currently only on metformin or a sulphonyluria or both for the last 3 months 4. HbA1c 6.5-8.0% 5. Fasting blood glucose (FBG) 126-200 mg/dl

Exclusion criteria

Exclusion criteria: 1. Known allergy to cinnamon. 2. Alcohol consumption >20g/day 3. Diagnosed Alcoholic Liver Disease, cirrhosis or abnormal baseline liver function tests. 4. Patients who are currently on hypoglycemic agents other than metformin or a sulphonyluria) 5. Insulin therapy 6. Raised baseline serum creatinine level (>1.5mg/dl in males or >1.2 mg/dl in females) 7. Lactation, pregnancy or unwillingness to use an effective form of birth control for women of child bearing years. 8. Symptoms suggestive of peptic ulcer disease 9. Past history of peptic ulceration. 10. Any diagnosed malignancy 11. Cardiac, liver or respiratory failure 12. Any other unrelated chronic illness 13. Any condition in the opinion of the primary investigator that would contraindicate the patient's participation.

Design outcomes

Primary

MeasureTime frame
Change in HbA1c from baseline in treatment and placebo arms [At baseline and monthly for a period of four months.] Change in Fasting Blood Glucose (FBG) from baseline in treatment and placebo arms [At baseline and monthly for a period of four months.]

Secondary

MeasureTime frame
Percentage of patients with HbA1c <7.0% [At baseline and monthly for a period of four months.] Percentage of patients with FBG < 126 mg/dl [At baseline and monthly for a period of four months. ] Change in insulin resistance and Beta-cell function from baseline (measured by the Homeostasis Model of Assessment (HOMA) calculations based on fasting blood glucose and fasting serum insulin). [At baseline and monthly for a period of four months. ] Change in BMI and other anthropometric parameters (weight, waist circumference, hip circumference, waist:hip ratio) from baseline [At baseline and monthly for a period of four months. ] Change in Blood Pressure (systolic and diastolic) from baseline [At baseline and monthly for a period of four months. ] Change in the Lipid Profile (Total cholesterol, LDL, HDL and TAG) from baseline [At baseline and monthly for a period of four months. ]

Countries

Sri Lanka

Contacts

Public ContactProf. Priyadarshani Galappatthy

Professor in Pharmacology

p.galappatthy@pharm.cmb.ac.lkTel: 0112695300

Outcome results

None listed

Source: SLCTR (via WHO ICTRP) · Data processed: Aug 9, 2026