Educational information, not medical advice — ask your doctor or midwife.
Artemisia scoparia is a feathery, shrub-like plant in the daisy family. Its dried young shoots are one of the plants sold in China under the name yin chen hao. Old Chinese texts used it for jaundice (yellow skin and eyes) and for liver and gallbladder trouble.
The plant grows wild across much of Asia, Russia and eastern Europe. It is a close cousin of mugwort and wormwood. Its wind-blown pollen is a well-known trigger of hay fever.
Here is the honest verdict up front. Almost all the research sits in test tubes and in rats and mice. Strong human trials are missing, so long use in tradition is not proof that it works, and it is not proof that it is safe.
This page is a reference, not advice for treating yourself. Yellow skin or eyes is a medical warning sign. It needs a doctor, not a herb.
No one has shown in people how this plant works, or that it works at all.
In rats, water extracts raise the flow of bile from the liver. A coumarin in the plant called scoparone appears to lower bilirubin in animals. Bilirubin is the yellow pigment that builds up in jaundice.
In cell studies, extracts appear to damp down some inflammation signals. In mice on a fatty diet, one extract improved insulin sensitivity. That means how well the body handles blood sugar.
Lab work also suggests the plant can change the liver enzymes that break down medicines. If that happened in a person, drug levels could shift. This has not been measured in people.
Treat all of the above as leads, not findings. A result in a dish or a mouse often fails to repeat in a human body.
Most often you meet it as dried young shoots, simmered in water to make a decoction (a strong boiled tea).
Common forms: - Loose dried herb for decoction - Granules or powders made from a water extract - Capsules and tablets of extract, mostly sold online - Part of mixed Chinese formulas, the best known being Yin Chen Hao Tang - Essential oil, used in scent work rather than taken by mouth
One labelling problem matters a lot. Yin chen hao may be Artemisia scoparia, Artemisia capillaris, or a blend of both. Many labels never say which plant is in the packet.
Chinese doctors wrote about yin chen hao well over a thousand years ago. It appears in the Shennong Bencao Jing, an early herb text. The classic formula Yin Chen Hao Tang dates from around 200 CE.
Its old job was what practitioners called damp-heat jaundice. Healers reached for it when skin and eyes turned yellow. They also used it for gallbladder and liver complaints, and for some itchy rashes.
Young shoots were eaten as a spring vegetable in parts of China and Korea. The herb is still listed in the Chinese Pharmacopoeia and is still prescribed by trained practitioners there.
Stop taking it and see a doctor if you notice any of these: - Yellow skin or yellow eyes - Dark urine or pale stools - Pain under the ribs on your right side - Unusual tiredness, nausea or loss of appetite that lasts - Easy bruising, or bleeding that will not stop
Get emergency help for a swollen face, lips or tongue, a widespread rash, or trouble breathing. Those are signs of a severe allergic reaction.
In the United States it may be sold as a dietary supplement, with no approval to treat any illness. In the UK and the EU it has no registered herbal medicine licence, so it mostly turns up in imported products. In China it is an official pharmacopoeia herb, yin chen hao, prescribed by trained practitioners.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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