Nitrogen Fixing Trees | Narra | Health Benefits | Herbal Tea | Diabetes Management
Pterocarpus indicus (commonly Narra) leaves have documented antidiabetic and antioxidant properties in traditional and scientific references.
Pterocarpus indicus (Narra) Leaves for Diabetes Management
Bioactive Compounds
- Flavonoids (quercetin, kaempferol) – improve insulin sensitivity.
- Phenolic compounds – reduce oxidative stress.
- Tannins & saponins – may help regulate blood sugar absorption.
Potential Mechanisms
- Blood Glucose Regulation
- Extracts of Narra leaves have shown hypoglycemic effects in animal studies.
- May stimulate glucose uptake and reduce intestinal glucose absorption.
- Insulin Sensitivity
- Flavonoids support better insulin receptor activity.
- Antioxidant & Anti-inflammatory Action
- Helps counter oxidative stress, which is a major factor in diabetes complications (neuropathy, nephropathy).
- Pancreatic Protection
- Some studies suggest protection of β-cells from oxidative damage, supporting insulin production.
Traditional Use (Folk Medicine in the Philippines & Asia)
- Decoction/tea: Fresh or dried Narra leaves boiled in water, consumed as herbal tea for “cleansing the blood” and lowering blood sugar.
- Topical wash: Leaf decoctions also used for skin sores in diabetic wounds.
Precautions
- Clinical human studies are limited — most evidence comes from animal models and ethnomedicine.
- Should not replace prescribed diabetes medications.
- Possible interactions with hypoglycemic drugs — may enhance their effect.
- Always use under guidance of a healthcare provider or herbal medicine expert.
Summary:
Narra (Pterocarpus indicus) leaves contain bioactive-rich enhancers (flavonoids, phenolics) that support blood sugar regulation, insulin sensitivity, and antioxidant defense. Traditionally used as a tea or decoction in the Philippines, they may be valuable in adjunct diabetes management, but clinical validation is still needed.