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Effects of Calamansi on Blood Glucose and Insulin Levels

The Effects of Calamansi (Citrus x Macrocarpa Bunge) Supplementation on Blood Glucose and Insulin Levels in Healthy Volunteers

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07587905
Enrollment
54
Registered
2026-05-14
Start date
2026-05-01
Completion date
2027-01-31
Last updated
2026-05-15

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

Conditions

Calamansi Powder Capsule Supplementation

Brief summary

Fifty-four healthy sedentary male and female participants aged 18-30 years will be recruited for this study. Participants will be randomly assigned to one of two groups: a control group receiving placebo MMC capsules (n = 27) or a calamansi capsule supplementation group (n = 27). All participants will undergo health screening procedures, including medical history assessment, mental health questionnaire evaluation, and measurements of vital signs, height, body weight, and body composition. Venous blood samples will subsequently be collected to determine blood glucose, insulin, creatinine, alanine aminotransferase (ALT), and malondialdehyde (MDA) levels. These assessments will be performed at three time points: 1) before capsule supplementation (baseline), 2) following a single dose of capsule supplementation, and 3) after 12 weeks of supplementation.

Interventions

OTHERMMC powder capsule

Each capsule contains MMC powder for 500 mg

DIETARY_SUPPLEMENTCalamansi powder capsule

Each capsule contains calamansi powder for 500 mg

Sponsors

Burapha University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Intervention model description

Participants will be randomly divided into 2 groups consisting of placebo group (n = 27) or a treatment group (n = 27).

Eligibility

Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy individuals who have not been diagnosed with diabetes or prediabetes, with a fasting blood glucose level (after 8 hours of fasting) of less than 100 mg/dL. * Aged between 18-30 years, both male and female * Body Mass Index (BMI) between 18.5 and 22.9 kg/m² * No diseases affecting blood sugar levels, such as liver or pancreatic diseases

Exclusion criteria

* Pregnant or breastfeeding women * Regular smokers * Regular alcohol consumers * Individuals with a history of allergies to citrus fruits or citrus-derived ingredients * Individuals taking medications that affect glucose metabolism and fat distribution in the body, including steroids, protease inhibitors, and psychiatric medications. These refer to drugs that act on the central nervous system and may affect blood sugar levels or energy metabolism, such as antidepressants, antipsychotics, and mood stabilizers.

Design outcomes

Primary

MeasureTime frameDescription
Concentrations of blood malondialdehydeAt 0 minute before consumption, at 120 minute after consumption, and at days 91 after consumptionConcentrations of blood malondialdehyde were measured before and after MMC capsules or calamansi capsule consumption at 500 mg in uM (micromolar) unit
Concentrations of blood glucoseAt 0 minute before consumption, at 30, 60, 90, 120 minutes after consumption, and at days 91 after consumptionConcentrations of blood glucose were measured before and after MMC capsules or calamansi capsule consumption at 500 mg in mg/dL unit
Concentrations of blood insulinAt 0 minute before consumption, at 120 minute after consumption, and at days 91 after consumptionConcentrations of blood insulin were measured before and after MMC capsules or calamansi capsule consumption at 500 mg in uU/mL (microunit/milliliter) unit

Secondary

MeasureTime frameDescription
Levels of heart rate variabilityAt 0-10 minutes before consumption, at 110-120 minutes after consumption, and at days 91 after consumption for 10 minutesHeart rate variability were measured before and after MMC capsules or calamansi capsule consumption at 500 mg in ms (milliseconds) and ms2 (millisecond squared) unit

Countries

Thailand

Contacts

CONTACTPiyapong Prasertsri, Ph.D.
piyapong@buu.ac.th6638103166
CONTACTKulwara Poolpol, Ph.D.
kulwara@go.buu.ac.th6638103147
PRINCIPAL_INVESTIGATORPiyapong Prasertsri, Ph.D.

Faculty of Allied Health Sciences, Burapha University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 16, 2026