Medicinal properties and uses of dinh lang

Ming aralia leaves treat headaches and insomnia. Photo: H. Anh

Dinh lang and its chemical constituents

Dr. Ngo Duc Phuong, Director of the Institute of Southern Herbal Medicine, stated that Polyscias fruticosa is not only a culinary herb in many rustic dishes, but has also long been an integral part of Vietnamese traditional medicine.

Dinh lang contains numerous vitamins, notably vitamin B1—an essential nutrient for the nervous system and energy metabolism. In addition, dinh lang is rich in glucosides, alkaloids, and flavonoids, compounds that play a role in supporting medical treatment, providing antioxidants, and enhancing overall health.

Chemical composition analysis shows that dinh lang root bark and leaves contain saponins, alkaloids, vitamins B1, B2, B6, vitamin C, about 20 amino acids, glycosides, phytosterols, tannins, organic acids, essential oils, many trace elements, and up to 21.1% sugars.

Uses documented in traditional medicine

According to traditional medicine, Polyscias fruticosa (đinh lăng), especially its leaves, helps improve a variety of health issues.

Good for the digestive system: Polyscias fruticosa leaf decoction helps support the treatment of diarrhea, bloating, and indigestion. Drinking steeped or decocted leaf water daily helps stimulate digestion and soothe common intestinal disorders.

Regulating menstruation: Ming aralia leaves help relieve menstrual cramps, promote blood circulation, support cycle regulation, and alleviate uncomfortable symptoms.

Relieve headaches and treat insomnia: Ming aralia leaves boost immunity, enhance mood, and reduce stress. In folk medicine, ming aralia leaves are often dried, roasted until golden, and combined with Indian coral tree leaves, passionflower, and lotus plumules to brew as tea or decoct, promoting restful sleep and relaxation.

Provides antibacterial and anti-inflammatory properties: Use fresh, washed Polyscias fruticosa (Ming aralia) leaves, crush them with a little salt, and apply to acne-prone skin to help disinfect and reduce inflammation.

Dosage and precautions

However, experts also recommend using polyscias fruticosa (ding lang) properly. Specifically:

- Use only about 10-20g of dried herbal material per day; avoid prolonged overuse.

- For children, Polyscias fruticosa (ming aralia) leaves should only be used topically; do not give them the leaf infusion to drink.

- Pregnant women, especially during the first trimester, should exercise caution.

- Herbal decoctions should not be left to cool for too long or kept overnight.

- Consult a doctor before regular use to ensure safety and effectiveness.