Banaba Leaf
A botanical extract that helps transport glucose into cells.
Also known as: Lagerstroemia speciosa • Crepe Myrtle
Overview
Banaba leaf comes from the Lagerstroemia speciosa tree, native to the Philippines and Southeast Asia. It has a long history of use in traditional medicine for managing blood sugar. The primary active compound, corosolic acid, is believed to be responsible for its glucose-lowering effects by enhancing cellular uptake of glucose.
Key Benefits
Lowers Blood Glucose
Corosolic acid in banaba leaf helps lower blood sugar by increasing glucose transport into cells, similar to insulin.
Supports Weight Management
By improving glucose control, it may help prevent fat storage and support weight loss efforts.
Antioxidant Properties
Contains various antioxidants, including phenols and flavonoids, that protect against oxidative stress.
May Improve Cholesterol
Some studies suggest it can have a positive effect on lipid profiles, including cholesterol and triglycerides.
Dosage & How to Take
Typically dosed based on corosolic acid content. A common dose is 32-48 mg of an extract standardized to 1% corosolic acid, taken once or twice daily.
| Purpose | Dose | Notes |
|---|---|---|
| Blood Sugar Control | 32-48 mg/day (1% extract) | Taken 15-30 minutes before a meal. |
Best Time to Take
Best taken shortly before meals to help manage the influx of glucose.
With or Without Food
No, take before meals.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Standardized Extract | Good | Consistent and reliable blood sugar-lowering effects | Look for products standardized for corosolic acid (e.g., GlucoHelp). |
| Dried Leaf/Tea | Variable | Traditional use | Potency is not guaranteed. |
Side Effects & Safety
Common
- None reported in human studies at recommended doses.
Rare
- Potential for hypoglycemia if taken with other blood sugar-lowering agents.
Contraindications
- Pregnancy
- Breastfeeding
- Known allergy to the plant.
Interactions
May have additive effects, increasing the risk of hypoglycemia. Monitor blood sugar closely.
Scientific Research
Management of Diabetes and Its Complications with Banaba (Lagerstroemia speciosa L.) and Corosolic Acid
This review highlights the mechanisms and clinical evidence supporting banaba leaf and corosolic acid for improving glucose control and managing diabetic complications.
Food Sources
Products With Banaba Leaf
2 products in our database contain this ingredient
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.