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The efficacy of Costus speciosus (Thebu) leaves to reduce postprandial blood glucose in healthy subjects.

The efficacy of Costus speciosus leaves on the postprandial glucose surge in healthy subjects; a clinical trial

Status
Unknown
Phases
Phase 1
Study type
Interventional
Source
SLCTR
Registry ID
SLCTR/2015/011
Enrollment
50
Registered
2015-05-15
Start date
2015-06-01
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

Blood glucose response to commonly consumed herb

Interventions

The subjects will be recruited from the staff of the University of Peradeniya. The Principle investigator will approach eligible subjects and inform and screen them. Subjects will be randomized using

Sponsors

Department of Medicine
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1. Healthy male and females aged between 18-65 years, 2. Fasting plasma glucose <100mg/dl following a 10- hour fast

Exclusion criteria

Exclusion criteria: 1. Pregnant and lactating females 2. Inability to give informed written consent 3. Known hypersensitivity to Costus specious 4. Presence of T2DM, CKD, CCF, elevated hepatic transaminases, blood dyscrasia, malignancies 5. Current steroid therapy 6. Treatment with any oral hypoglycaemic agent (taken for indications other than DM as well), 7. Known intestinal diseases, malabsorptive states and diarrhoea. 8. Ingestion of any herbal preparation (including C. speciosus) known to alter glucose metabolism within the 48 hours preceding test meal administration.

Design outcomes

Primary

MeasureTime frame
1. 2-Hour plasma glucose following the meal 2. 4 hour plasma glucose following the meal 3. Fasting plasma glucose the following morning [1.2 hours following the test meal 2.4 hours following the meal 3.Fasting plasma glucose the following morning after a fast of 8-10 hours. ]

Secondary

MeasureTime frame
None [None]

Countries

Sri Lanka

Contacts

Public ContactArjuna Medagama

Senior Lecturer in Medicine

arjunam@pdn.ac.lk+94812396470

Outcome results

None listed

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