Huang Lian Tang
Quick Facts
- What it is: Huang Lian Tang (Coptis Decoction) is a classical Chinese multi-herb formula, listed here as a single drug entry, used traditionally for burning stomach discomfort with nausea and loose stools.
- Main uses: Burning discomfort in the upper belly, Nausea and vomiting, Loose stools with cramping
- Best for: Short-term traditional use for upper-gut discomfort under a qualified practitioner
- Active ingredients: Berberine and related alkaloids from Coptis, Gingerols and shogaols from dried ginger, Cinnamaldehyde from cinnamon twig, Ginsenosides from ginseng, Glycyrrhizin from licorice
- Forms: Loose dried herbs for decoction (a strong tea), Concentrated granules or powder, Pills, tablets and capsules
- Time to effect: Traditionally a few days to two weeks; no trial data confirms this.
- Side effects: Usually mild stomach upset and bitter taste; longer use risks high blood pressure, swelling and low potassium from the licorice.
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What is Huang Lian Tang?
Huang Lian Tang is a classical Chinese herbal formula for stomach and gut trouble. It is also called Coptis Decoction. People take it for burning pain in the upper belly, nausea, vomiting and loose stools.
We list it here as one entry, a TCM formula. That means the whole multi-herb mix is treated as one product. It is not split into separate herbs.
The recipe mixes Huang Lian (Coptis root) with dried ginger and cinnamon twig. It also holds ginseng, prepared Pinellia, honey-fried licorice and jujube dates.
Practitioners pick it for a pattern they call heat above and cold below. That means heartburn and nausea up top. Lower down there are cramps and loose bowels.
On the evidence: this formula has a long, well-recorded history of use. But we could not find any published human trials of the finished formula. A long record of use does not by itself show that a remedy works.
How does Huang Lian Tang work?
The short answer is that no one has shown clearly how it works in people. What follows is theory, not proven fact.
In traditional terms, Coptis is bitter and cold. It is said to clear heat in the stomach. Warm ginger and cinnamon twig are said to settle cold in the gut.
Ginseng, licorice and dates are said to protect the digestion.
In lab terms, Coptis is rich in berberine. Berberine is a plant alkaloid, a bitter compound that holds nitrogen. Studies in cells and animals have looked at its effects on gut bacteria, gut inflammation (irritation and swelling) and blood sugar.
Ginger compounds have been studied for nausea. Most of this work comes from test tubes and animals. It does not prove that the whole decoction does the same thing in a person.
What forms does Huang Lian Tang come in?
You will usually meet it in one of three forms.
Loose dried herbs, weighed out and simmered into a decoction (a strong tea) at home. This is the old method. Classical doses refer to it.
Granules or strong powder, stirred into hot water. This is the most common modern form. Japan sells it too, as the Kampo formula Oren-to.
Pills, tablets or capsules of dried extract. These are handy, but the strength varies a lot between brands. A label rarely tells you how much of each herb you get.
Where it comes from:
The formula comes from the Shang Han Lun (Treatise on Cold Damage). Zhang Zhongjing put that book together around 200 CE. The formula has stayed in use ever since.
It is a standard teaching formula in Chinese herbal medicine. Japanese Kampo practice gives it out as Oren-to.
Its standing rests on centuries of practitioner use and case records, not on modern trials.
Who should avoid Huang Lian Tang?
- Do not use if you are pregnant, as Pinellia and Coptis are both traditionally avoided in pregnancy
- Do not use if you are breastfeeding, because berberine passes into milk and can be harmful to a baby
- Do not use if you are caring for a newborn or a baby with jaundice (yellow skin and eyes) — never give it to them, as berberine can worsen jaundice and cause brain injury
- Do not use if you have high blood pressure that is not well controlled, because the licorice in it can push your readings higher
- Do not use if you have low potassium, heart failure, an irregular heartbeat or kidney disease
- Do not use if you take digoxin, a water tablet (diuretic) or steroid tablets without your doctor's approval
- Do not use if you take warfarin or another blood thinner, as it can make your clotting tests unstable
- Do not use if you take cyclosporine, tacrolimus or another medicine with a narrow safe range, because berberine can raise the level in your blood
- Do not use if you are taking any aconite-containing herbal formula (Chuan Wu, Cao Wu or Fu Zi)
- Do not use if you are about to have surgery within two weeks, because of bleeding and blood sugar effects
- Do not use if you have a known allergy to any ingredient, including ginseng, licorice or ginger
When should you see a doctor?
See a doctor promptly if your stomach pain is severe, keeps getting worse, or wakes you at night. Get urgent help if you vomit blood, pass black or tarry stools, or have blood in your diarrhoea.
Stop taking it and call your doctor if you notice swollen ankles or face, headaches, muscle weakness or cramps, or a fluttering or irregular heartbeat. These can be signs of low potassium (low levels of an important body salt) from the licorice.
Also check in with a doctor if you have lost weight without trying, if you have a fever, or if your symptoms have not improved after two weeks of use.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
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