#OroxylumIndicum

For generations, the peka tree—known in Thai as เพกา (Central), ลิ้นฟ้า (Isan), and มะลิดไม้ (North)—has been a quiet staple in kitchens and traditional medicine across Thailand. Its long, sword-shaped pods appear in rural curries, while the bark and seeds underpin many folk remedies. Today, researchers are exploring whether Oroxylum indicum bark can live up to its long-standing reputation, bridging ancient practice with contemporary science.

Thai households and their Asian neighbors have long relied on peka for a range of ailments. The inner bark is central to folk medicine, used in decoctions and pastes to ease fevers, treat skin conditions, calm digestive issues, and even repel livestock pests. This knowledge travels through generations, woven into Thai traditional medicine and Ayurveda texts. Peka embodies resilience, resourcefulness, and cultural identity in rural and indigenous communities across the country.

For generations, the “peka” tree, known by its many Thai names—เพกา (Central), ลิ้นฟ้า (Isan), มะลิดไม้ (North), among others—has been quietly revered in kitchens and medicine cupboards across Thailand. Its long, sword-shaped pods often grace rural soups and curries, while the bark and seeds underpin numerous folk remedies. But what lies beneath these centuries-old rituals? Can the bark of Oroxylum indicum, the scientific identity of “peka,” truly live up to its enduring status? Modern research is now beginning to shed light on the potent intersection of tradition and science found within the rough, unassuming bark of this native tree.