Samulwaeng is the bark of Cinnamomum bejolghota, a tree richly woven into Thailand’s herbal heritage. Locally known names include เชียกใหญ่, เฉียด, ฝนแสนห่า, and มหาปราบ. For generations, this bark has anchored healing practices across Southeast Asia and now stands at a frontier between ancient wisdom and contemporary biomedical research. As interest in plant-based remedies grows globally, Samulwaeng illustrates how Tradition and Science can inform each other.
To grasp why Samulwaeng endures in Thai kitchens, temples, and medicine chests, we must look at its cultural roots. Traditional Thai healers prize the aromatic bark for purportedly stimulating circulation, balancing internal energies, and addressing a range of complaints—from digestive upset to general malaise. In regional formulas used in traditional medicine, Samulwaeng often acts as a harmonizing agent to awaken, invigorate, and expel stagnation, or “wind,” from the body. Beyond medicine, the bark appears in folk rituals, protective charms, and ceremonial dishes, its fragrance and subtle heat echoing cinnamon, a close relative in the same plant family. Thai practitioners emphasize its role as a warming, restorative component in household remedies and rituals.