#ThunbergiaLaurifolia

Long woven into the fabric of Thai healing traditions, the humble vine known to villagers across the Kingdom as รางจืด—or Rang Jued—has claimed the spotlight in contemporary scientific inquiry. Once reserved for the spice racks and herbal bundles of folk healers, this “blue trumpet” vine is now under the microscope, revealing a complex reality where centuries-old wisdom resonates with new research. From roadside remedies in rural Thailand to promising anti-inflammatory and neuroprotective agents in international journals, Rang Jued’s journey spotlights the harmony—and the tension—between ancient intuition and modern evidence.

Rang Jued, the vine known in Thai as รางจืด, has long been a staple in village medicine. Now it sits at the center of growing scientific interest, testing whether ancient wisdom can meet today’s evidence standards. From roadside herbal tea to laboratory assays, Rang Jued’s arc highlights how cultural practice and modern research can converge—and sometimes clash.

Rang Jued (Thunbergia laurifolia) features violet-blue, trumpet-shaped flowers and is more than ornamental foliage. In Thai traditional medicine, it has earned a reputation as a general detoxifier. People in many regions brew teas from its leaves, roots, and stems to address poisoning, fevers, and other ailments, with the belief that it can draw out toxins. Today, the plant is commonly used to counter chemical exposure, drug effects, and even certain envenomations. Research by herbalists and scientists notes the plant’s potential, but it also urges caution, especially in how widely the detox claim is applied.