ผักเชียงดา (Phak Chiang Da) / Bitter Leaf
Family: Apocynaceae
Gymnema inodorum, known in Thailand as ผักเชียงดา (Phak Chiang Da), is a perennial climbing herb native to Northern Thailand and other parts of Southeast Asia. It is famous for its ability to reduce the perception of sweetness and regulate blood sugar levels, earning it the nickname “the sugar killer.”
Botanical Characteristics
This twining vine has glossy, opposite leaves and small yellowish-green flowers. It thrives in warm, humid climates and can grow along trellises or other support structures. The leaves are slightly bitter and exude a mild aroma when crushed.
Use in Thai Traditional Medicine
In Thai herbal practice, ผักเชียงดา is used to support pancreatic health and control blood sugar. It is believed to help regenerate beta cells and improve insulin sensitivity. The herb is also valued for its cooling and detoxifying properties.
Culinary and Nutritional Uses
The young leaves are boiled and eaten as a vegetable or added to soups and curries. Though slightly bitter, they are highly nutritious and often used by those seeking to manage sugar levels naturally.
Cultivation Notes
Gymnema inodorum prefers full sun to partial shade and well-drained soil. It can be propagated through stem cuttings and benefits from regular pruning to encourage new leaf growth. In the KBE Thai Medicinal Herb Garden, it is grown both for study and daily herbal use.
Historical Context
The genus Gymnema has been used for over 2,000 years in Ayurveda to treat “sweet urine” (diabetes). Its integration into Thai herbalism reflects a long tradition of using natural plants to maintain metabolic balance and wellness.
Disclaimer: This information is provided for educational and historical purposes only. It is not intended as medical advice. Always consult a qualified healthcare professional before using any herbal preparation.
