Banaba Leaf Extract (Corosolic Acid)
Metabolism & blood sugarFunction & benefits
Leaves of the Lagerstroemia speciosa tree, rich in corosolic acid; a clinical review suggests banaba extract and corosolic acid support glucose uptake by cells and normal blood sugar levels after meals.
Dosage & how to use
| Recommended dose | 32–48 mg of a 1% corosolic acid extract (or 10 mg of an 18% extract) |
| Best time to take | 15 minutes before the main meal |
| Frequency | 1–2 times daily |
Best forms to choose
Banaba extract standardised to 1% or 18% corosolic acid.
Important warnings
It may lower blood sugar; check your blood sugar regularly if you monitor it
Avoid it with kidney disease
Avoid during pregnancy and breastfeeding
Drug interactions
Important warning: it may strengthen diabetes medication and insulin and cause low blood sugar; ask your doctor about adjusting doses.
Related supplements
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Scientific references
- Stohs SJ et al. Phytother Res 2012 (review) — PMID: 22095937
Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)
⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.