What is Hao Qin Qing Dan Tang?

Hao Qin Qing Dan Tang is a herb mix from Chinese medicine. It is brewed as a tea from about nine herbs and minerals. It is listed here as one item: a single drug entry (a TCM formula).

It is given for fevers that come and go, a bitter taste in the mouth, and nausea. Old texts tie these signs to heat in the gallbladder. It is also used for a tight chest and thick, sticky phlegm (mucus).

Long use in a tradition is not proof that a remedy works. We found no sound human trials of this mix. Its place in the tradition is strong, but the evidence grade is low.

How does Hao Qin Qing Dan Tang work?

No one has shown how this tea works in the body. The old texts say it clears "damp heat" from the gallbladder and stomach. That is a way of naming a set of symptoms, not a body process we can measure.

Lab and animal work shows that some of these herbs can lower signs of swelling in tissue. Qing Hao holds artemisinin, a drug used against malaria. That does not mean the whole tea acts the same way in a person.

Some of what people feel may also come from rest, warm fluids, and time.

What forms does Hao Qin Qing Dan Tang come in?

It is most often boiled at home as a tea from cut, dried herbs. Some shops sell it as granules you stir into hot water. A few sell pills or capsules made from a dried extract.

Strength varies a lot between makers. There is no standard dose that all products share.

Where it comes from:

The recipe appears in a Chinese text of 1904, the Revised Popular Guide to the Discussion of Cold Damage. It is credited to Yu Genchu, with later editors. It has been a staple of Chinese herbal practice since then, mainly for summer and damp-heat fevers.

What does Hao Qin Qing Dan Tang help with?

• Fevers that come and go, with chills: This is the classic use. Herbalists pick it when a fever rises and falls each day and the person feels hot, then cold. We found no human trial that tests this use, so treat it as tradition only.
• Nausea and vomiting with a bitter taste in the mouth: Zhu Ru and Ban Xia are the parts said to settle the stomach. Lab work on these herbs is limited and mixed. No good human trial backs this use.
• Fullness or pain under the ribs: Old texts link this feeling to heat in the gallbladder. Pain under the right ribs can also mean gallstones or a liver problem. Get it checked before you treat it with herbs.
• Thick yellow phlegm (mucus) with a cough: The tea is used when a cough brings up thick, sticky phlegm. Support for this is from tradition and from lab work on single herbs. It has not been tested as a whole mix in people.
• Poor appetite during a summer illness: Chen Pi and Zhi Ke are added for a heavy, blocked feeling in the belly. This use rests on long practice, not on trials.
• Gallbladder swelling (cholecystitis) — traditional use only: Some Chinese clinics use this mix alongside standard care for gallbladder swelling. We could not find a trial we trust that tests it. Gallbladder swelling can turn serious fast and needs a doctor, not herbs alone.

Which foods are rich in Hao Qin Qing Dan Tang?

1. Grapefruit: it blocks the same liver enzyme as the bitter orange in this mix
2. Seville orange juice or marmalade: same effect as grapefruit
3. Licorice sweets and licorice tea: they add to the licorice load and the potassium risk

What are the side effects of Hao Qin Qing Dan Tang?

• Upset stomach or belly pain
• Loose stools or diarrhoea
• Nausea
• Burning or itching in the mouth and throat, if the pinellia was not treated well
• Skin rash or itch from an allergy
• Puffy ankles, high blood pressure and low potassium (a salt your heart needs), from the licorice
• Odd heartbeats or muscle weakness, which can follow low potassium
• Liver injury (rare), reported with skullcap and with indigo
• Raised blood pressure in the lungs (rare), reported with long indigo use

Good to know:

Mild belly upset is the most common problem. It often settles if you take the tea with food or use less.

The serious effects are rare, but they are real. Most of them come from three parts: licorice, indigo, and badly treated pinellia root.

Stop the tea and get help if you notice yellow skin or eyes, dark urine, a fast or odd heartbeat, or bad swelling.

How much Hao Qin Qing Dan Tang should you take?

• Recommended daily: There is no dose set by research. In Chinese practice, one day's batch of dried herbs is boiled and split into two or three cups. Granule doses differ by brand, so follow the label and a trained herbalist. Do not raise the dose on your own. The licorice, talc and indigo in it carry real risks.
• Best time of day: Usually split into a morning and an evening cup, a few hours apart.
• With or without food: Taken warm, between meals or shortly after food. Take it with food if it upsets your stomach.
• Time to effect: Traditional practice expects some change in a few days. If nothing shifts within about three days, stop and get checked.
• How long to take it: It is meant for a short, sharp illness, not for daily long-term use. Most courses run a few days to about two weeks. Stop and see a doctor if a fever lasts more than three days or gets worse.