White Mulberry Leaf Extract (DNJ)
Metabolism & blood sugarFunction & benefits
Leaves of the white mulberry (Morus alba), rich in 1-DNJ, which briefly slows the sugar-digesting enzymes in the gut; a clinical trial suggests mulberry leaf extract softened the rise in glucose and insulin after a carbohydrate-rich meal.
Dosage & how to use
| Recommended dose | 250–500 mg of standardised extract |
| Best time to take | 5–10 minutes before a carbohydrate-rich meal |
| Frequency | With starchy meals |
Best forms to choose
White mulberry leaf extract standardised for 1-DNJ (such as Reducose®).
Important warnings
May cause mild wind or bloating in the first days
Avoid during pregnancy and breastfeeding
Drug interactions
It may strengthen diabetes medication (especially acarbose, which works in a similar way) and lower blood sugar further; ask your doctor.
Related supplements
- Chromium PicolinateMetabolism & blood sugar
- Berberine HCl (from Berberis aristata)Metabolism & blood sugar
- True Ceylon Cinnamon (Cinnamomum verum)Metabolism & blood sugar
- Bitter Melon Extract (Momordica charantia)Metabolism & blood sugar
Scientific references
- Thondre PS et al. Nutrients 2024 — PMID: 38892603
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.