How to Prepare Lead-Free Herbal Plasters with Honey Base: A Traditional Chinese Medicine Approach
Published 2026-06-04 · 271 words · TCM & Functional Medicine
This article introduces the preparation process of a new type of herbal plaster that is free of lead, cinnabar, and rosin. Using honey as a base, these plasters offer a safer and more effective alternative for external therapy in Traditional Chinese Medicine (TCM).
The key to effective treatment lies in a well-designed formula. Just like in decoctions, the principles of formulating a plaster follow the Jun-Chen-Zuo-Shi (Monarch, Minister, Assistant, Envoy) structure. However, since the plaster is applied externally, the dosage of herbs can be increased to enhance therapeutic effects while minimizing side effects on the body.
Once the formula is determined, herbs are processed according to their properties:
Honey helps maintain the plaster's moisture and enhances transdermal absorption. Only refined honey should be used.
Choose high-quality honey such as jujube flower or lychee honey (rapeseed honey is secondary). The ideal honey is a thick, syrupy liquid or semi-solid, white to light yellow, with a pure sweet taste, no sourness, no foreign odor, and free of impurities. At 15°C, its relative density should be 1.40–1.45.
Heat raw honey in a pot to boiling, skim off foam and impurities, then continue heating. Three degrees of refined honey are recognized:
References
1. Huangdi Neijing (The Yellow Emperor's Inner Classic) – foundational text on TCM theory and external therapies.
2. Bencao Gangmu (Compendium of Materia Medica) by Li Shizhen – detailed records on honey and herbal processing.
3. Shanghan Lun (Treatise on Cold Damage) by Zhang Zhongjing – principles of formula composition and external applications.
4. Modern TCM Pharmaceutics – guidelines on plaster preparation and quality control.