Are There Mercury Contaminants in Traditional Chinese Medicine? - Traditional Chinese Medicine

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Traditional Chinese Medicine (TCM)


Hello, doctor: I heard that scientific traditional Chinese medicine contains mercury.
Is that true? Thank you.

Rensheng de fangxiang, 20~29 year old female. Ask Date: 2006/03/08

Dr. Yan Sumei reply Traditional Chinese Medicine


Scientific Chinese medicine refers to the process of decocting traditional Chinese herbal materials and then concentrating them into granules or powders for sale, with hundreds of different formulations available.
Most traditional Chinese medicines do not contain mercury, so when they are processed into scientific Chinese medicine, they also do not contain mercury.
There are very few traditional Chinese medicines that contain mercury, with cinnabar being one of the rare exceptions.
When using cinnabar, it must be ground with water until it is fine enough to float on the surface of the water before it is extracted and dried for medicinal use.
Physicians must also control the dosage to very small amounts.
Recently, the Department of Health has instructed Chinese medicine practitioners to regulate the use of such heavy metal-containing medications.
Therefore, practitioners in large hospitals and qualified Chinese medicine practitioners do not use them indiscriminately.
However, traditional Chinese medicine shops selling products like Jingfeng San or Babao San may still contain mercury, so the public should exercise caution.

Reply Date: 2006/03/08

More Info


The concern regarding mercury contamination in Traditional Chinese Medicine (TCM) is a valid one, especially given the historical use of certain mercury-containing substances in some herbal formulations. However, it is crucial to clarify that the majority of TCM products do not contain mercury.
In TCM, there are specific herbs known to contain mercury, such as cinnabar (朱砂, zhū shā), which is used in some traditional practices. Cinnabar is a mineral that contains mercury sulfide and has been used in TCM for its purported medicinal properties. However, the use of such substances is highly regulated in modern practice. The Ministry of Health in many countries, including Taiwan, has issued guidelines to limit or prohibit the use of heavy metals in medicinal products. Qualified practitioners are aware of these regulations and are unlikely to prescribe mercury-containing herbs unless absolutely necessary and under strict dosage control.

The process of creating modern TCM formulations, often referred to as "scientific Chinese medicine," involves the extraction and concentration of herbal ingredients. Most of these formulations are made from herbs that do not contain heavy metals. The risk of mercury contamination is significantly reduced when using reputable manufacturers who adhere to safety standards and regulations. However, there is still a risk when purchasing herbal products from unregulated sources, such as some traditional herbal shops or online vendors, where the quality and safety of the products may not be guaranteed.

It is essential for consumers to be cautious and to seek out products from reputable sources. If you are considering using TCM, it is advisable to consult with a licensed practitioner who can provide guidance on safe and effective herbal treatments. They can help you navigate the complexities of herbal medicine and ensure that you are using products that are free from harmful contaminants.

In summary, while some traditional herbs may contain mercury, the vast majority of TCM products do not. The risk of mercury exposure can be minimized by choosing reputable sources and consulting qualified practitioners. It is always best to prioritize safety and efficacy when considering any form of treatment, including herbal medicine. If you have any further concerns about specific products or formulations, discussing these with a healthcare professional can provide additional clarity and reassurance.

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