#PlantMedicine

Few plants hold as esteemed a place in Thailand’s culture and kitchens as ข่า (kha), known in English as galangal and classified scientifically as Alpinia galanga (L.) Willd. Beyond its unmistakable aroma infusing tom yum soup and curries, galangal’s gnarled rhizome has, for centuries, played a starring role in Thai, Chinese, Ayurvedic, and Unani medical traditions. Today, science is shining new light on why this fiery root has endured in the apothecaries of Southeast Asia and around the world.

Tucked away in the diverse pharmacopoeia of traditional Thai medicine lies Plao Noi (เปล้าน้อย), scientifically known as Croton fluviatilis Esser, a humble herb whose leaves have been revered for centuries for their healing properties. With roots that reach deep into the natural and cultural landscapes of Thailand, Plao Noi exemplifies the nation’s dynamic interplay between time-honored folk remedies and the growing integration of scientific research. Today’s revival of interest in herbal medicine among health-conscious Thais is shining a new light on Plao Noi, inviting renewed appreciation of its historical roles—and prompting fresh investigation into whether its ancient reputation stands up to modern scrutiny.

Centuries before pharmacy shelves brimmed with modern medicine, Thailand’s rural communities turned to the earth for healing. Among the greenery that thrived along streams and in deciduous forests, the shrub known as เจตพังคี—Jetaphangkee—offered roots lauded for their potent effects. Today, Jetaphangkee (Cladogynos orientalis) is reclaiming its spotlight, as modern science begins to shine its lens on this fascinating herbal medicine, bridging ancient wisdom with contemporary research.

Jetaphangkee’s story is woven through the daily lives and cultural history of Thailand’s regions. Known by an array of local names—ใบหลังขาว, เปล้าน้ำเงิน, ตองตาพราน, among others—Jetaphangkee is not just an herbal remedy, but a living marker of regional identity and knowledge. For generations, communities across the North and Northeast have called on Jetaphangkee, particularly its roots, to treat ailments from digestive upset to fevers and mysterious “wind” symptoms (called lom in Thai healing traditions). In Thai folk medicine, roots are typically boiled into decoctions, alone or as part of multifaceted herbal blends, demonstrating the intricate layering of Thai pharmacopeia Medthai.com, Ubon Ratchathani University Herb Database.