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Antipyretic Dichroa

Antipyretic Dichroa

A Potent Herbal Remedy with a Wide Range of Therapeutic Properties

Antipyretic Dichroa (Chang Shan, Dichroa Root, Dichroae Radix) is a traditional Chinese medicinal herb that has been used for centuries to treat various ailments. It belongs to the expel parasites category in Traditional Chinese Medicine (TCM) and is known for its strong therapeutic effects. This article provides an overview of Antipyretic Dichroa, including its properties, functions, contraindications, and pharmacological activities.

The Lore of Chang Shan

On a mountain in China called Mount Eternity, there was an old temple where a poor monk lived. This monk was so poor that he had to travel to a nearby village to beg for food. One day, the monk was attacked by malaria, experiencing fever and chills almost daily. He lost a great deal of weight and found it challenging to walk. Being too poor to seek medical treatment, the monk continued to beg for food to sustain himself.

One day, as the monk knocked on a villager's door, the villager informed him that they had no food to spare, as they had only some plant roots that caused them to vomit. Desperate and hungry, the monk ate the roots and left. Surprisingly, the monk didn't vomit, and his malaria symptoms disappeared for several weeks. When the symptoms returned, he rushed back to the villager's house and inquired about the plant roots. The villager's son guided the monk to the mountain, where they discovered the plant responsible for the monk's temporary recovery.

The plant turned out to be a deciduous shrub with round stalks and branches, typically found growing on wet ground in the mountains. The monk dug out the roots, cooked, and ate them. Once again, his malaria symptoms disappeared. He planted some in his garden and eventually became a doctor, treating numerous malaria patients using the same plant. As time went on, the plant was given the name "Mount Eternity."

Properties of Antipyretic Dichroa

Antipyretic Dichroa is known to enter the Heart, Liver, and Lung channels in TCM, enabling it to target specific conditions related to these organs. The herb has a bitter and spicy taste, and its temperature is considered cold and toxic. This unique combination of properties enables it to effectively treat various ailments, including malarial conditions and respiratory issues.

Functions of Antipyretic Dichroa

Treating Malarial Conditions: Antipyretic Dichroa is widely known for its ability to kill parasites, making it an effective treatment for malarial conditions. Its antimalarial properties have been well-documented in traditional Chinese medicine.

Eliminating Phlegm: Antipyretic Dichroa can induce vomiting, which helps eliminate phlegm stuck in the chest. This property makes it a potent remedy for respiratory issues, particularly those involving excess mucus or phlegm.


Antipyretic Dichroa should not be used in certain situations, as it can have adverse effects on some individuals. It is contraindicated in pregnant women, as it is a uterine stimulant and can potentially cause harm to the fetus. Additionally, the herb should not be used by people who are debilitated, as its toxic properties can further weaken their already compromised immune systems.


The recommended dosage of Antipyretic Dichroa in its raw form is 4.5-9 grams. It is essential to follow the proper dosage guidelines to avoid any potential side effects.

Pharmacological Activities

Antipyretic Dichroa possesses a wide range of pharmacological activities, including:

  1. Antiamebic
  2. Antimalarial
  3. Antineoplastic
  4. Antipyretic
  5. Antiviral
  6. Emetic
  7. Hypotensive
  8. Uterine Stimulant

These activities contribute to the herb's versatile therapeutic properties, making it an effective remedy for a variety of conditions.

Antagonistic Effects with Niu Huang

It is important to note that Antipyretic Dichroa can be antagonized by Niu Huang (Cattle Gallstone), another traditional Chinese medicinal herb. This means that the two herbs should not be used together, as they can counteract each other's effects.


Antipyretic Dichroa is a potent traditional Chinese medicinal herb with a wide range of therapeutic properties, including antimalarial, antipyretic, and emetic effects. While it can be a powerful remedy for various ailments, it is essential to use it with caution and under the guidance of a qualified practitioner, especially due to its toxic nature and contraindications.

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