Should the water used to first decoct the processed aconite root (Hei Shun Pian) be discarded?
Apr 18, 2025
Source: Cainiu Health
Dr. Zhang Xiuhong
Introduction
For the first prolonged decoction, if the herb is decocted alone for 1–2 hours initially, the first decoction may be discarded to remove toxic components such as aconitine. This step is commonly used in preliminary processing of toxic ingredients to ensure the safety of subsequent medicinal preparations and prevent adverse reactions. However, during formal decoction, if Heishunpian (black processed lateral root of Aconitum carmichaelii) is decocted together with other herbs, the active ingredients in the medicinal materials have already been extracted into the liquid. Discarding this liquid would result in loss of effective medicinal components.
Generally, the water used for the initial decoction of processed Aconite Root (Black Shun Pian) during the toxicity degradation phase can be discarded. However, during the standard decoction process, it should not be discarded to avoid loss of effective medicinal components. If in doubt, please consult a healthcare professional in advance. Detailed explanation is as follows:
During the initial prolonged decoction—for example, decocting alone for 1–2 hours—the first decoction water may be discarded to remove toxic components such as aconitine. This step is commonly used in preliminary toxicity treatment to ensure the safety of subsequent medicinal liquid and prevent poisoning reactions.
However, if the Black Shun Pian is decocted together with other herbs during formal preparation, the effective components have already been extracted into the liquid. Discarding the liquid would result in the loss of active ingredients, thus affecting the therapeutic effect. In this case, the decoction should be retained and consumed.
Strictly follow the decoction instructions provided by the TCM physician. The toxicity treatment process must be conducted under professional supervision. When decocting Black Shun Pian, ensure the total decoction time exceeds 2 hours, and always use it in combination with other herbs. Unauthorized adjustment of the decoction procedure or discarding effective medicinal liquid is strictly prohibited.
