Sweet wormwood, also known as Qing Hao or Artemisiae annuae herba, is a plant that has been used in traditional Chinese medicine for centuries. It is classified as a "clear heat from deficiency" herb and is believed to have a bitter and spicy taste as well as a cold temperature.
In terms of its functions and indications, sweet wormwood is commonly used to clear summerheat, including low fever, headache, dizziness, and stifling sensation in the chest. It is also used to clear fever from deficiency, particularly in cases of blood deficiency or the aftermath of a febrile disease. In addition, sweet wormwood is believed to have the ability to cool the blood and stop bleeding, making it helpful in cases of purpuric rashes or nosebleed. It is also used to treat malarial disorders and resolve heat, including alternating fever and chills.
However, there are some contraindications to be aware of when using sweet wormwood. It is not recommended for those with weak digestion or watery diarrhea. Additionally, caution should be exercised when using it in cases of blood deficiency or postpartum.
In terms of its pharmacology, sweet wormwood has been shown to have antibacterial, antimalarial, antipyretic, antiviral, hepatoprotective, and hypotensive properties. It is believed to be effective in treating a variety of ailments and conditions.
Overall, sweet wormwood is a valuable herb in traditional Chinese medicine with a wide range of potential benefits. However, it is important to use it responsibly and under the guidance of a qualified healthcare professional.