Xin Xiao Powder，*Xuanming Lun*, Volume 15.，When wind-heat invades the Yangming meridian, causing tooth decay, the gums become ulcerated, emitting a foul odor and bleeding; the discharge is yellow and putrid-smelling; there is a sensation of fullness and oppression; the teeth feel loose and painful; and the condition occurs at specific times.
Xin Xiao Powder
Disclaimer: These statements have not been evaluated by the Food and Drug Administration (FDA). This product is not intended to diagnose, treat, cure, or prevent any disease. All references in this article to TCM syndrome differentiation, herbal medicines, teas, and decoctions are intended to promote TCM culture and are provided solely for educational and reference purposes.
Formulas Name : Xin Xiao Powder
Chinese Name : 信效散
Drug Formulation
Arsenic trioxide 1 qian, ancient lime (if unavailable, use well-aged lime, roasted and finely ground) 4 qian, orpiment 2 qian (one formula includes dragon bone and omits lime).
Source
*Xuanming Lun*, Volume 15.
Processing
Grind the above ingredients into a fine powder, then add 1 fen of rock salt and a small amount of musk.
Benefits
When wind-heat invades the Yangming meridian, causing tooth decay, the gums become ulcerated, emitting a foul odor and bleeding; the discharge is yellow and putrid-smelling; there is a sensation of fullness and oppression; the teeth feel loose and painful; and the condition occurs at specific times.
Instructions for Use
Each dose consists of 2–3 grains the size of a soybean. First, rinse your mouth thoroughly. Dip your finger in the medicine and apply it to the gums of both the upper and lower teeth. Let the saliva drain out; do not swallow it. Rinse your mouth clean shortly afterward. Alternatively, apply a small amount directly to the eroded areas. Take 3–4 times daily; frequent application is most effective.
Copyright: Excerpt from *Xuanming Lun*, Volume 15., Copyright belongs to the Original Author and all original sources, This article was shared by DeDe on August 31, 2026, Please credit the source and include a link to the original article when reposting.
Terminology Proofreading: [Cheng Bo] | August 31, 2026 Reviewed by: [Wang Zhongxiang, Associate Chief TCM Physician (China)] | August 31, 2026
Correct Content Errors: Errors may occur during the writing, editing, translation, and publication of website content. If you find any errors or inaccurate information in this article, please feel free to Contact Us to report them, and we will correct them promptly.
FDA Disclaimer: The descriptions of the efficacy of Chinese herbal medicines, herbal teas, decoctions, and formulas, as well as the content on Traditional Chinese Medicine (TCM) diagnostic theory and traditional TCM therapies contained on this site, are intended solely for the purpose of popularizing TCM culture and serving as an educational reference; they do not constitute medical diagnosis or treatment advice. Please do not attempt to use these products on your own without proper guidance. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. If you are experiencing any physical discomfort, please consult a licensed healthcare professional and seek treatment at a reputable medical institution. This platform assumes no responsibility for any consequences resulting from the use of herbs or formulas by any individual based on the information provided on this site. Please read Medical Disclaimer.
Xin Xiao Powder,When wind-heat invades the Yangming meridian, causing tooth decay, the gums become ulcerated, emitting a foul odor and bleeding; the discharge is yellow and putrid-smelling; there is a sensation of fullness and oppression; the teeth feel loose and painful; and the condition occurs at specific times.