Educational information, not medical advice — ask your doctor or midwife.
Jia Jian Wei Rui Tang is a traditional Chinese herbal formula, also known as Modified Solomon's Seal Decoction. In this library it is listed as a single drug (TCM formula). It is given for a cold or flu-type illness in a person who is already dry, thin and run-down.
Practitioners reach for it when a fever comes with a sore throat, a dry cough with little phlegm, thirst, and night sweats. The aim is to settle the surface illness while putting fluids back, instead of sweating the person out even more.
Evidence verdict: this is a long-standing staple of Chinese medicine, but we found no published human trials of the formula itself, so its effects remain unproven. Traditional use is not proof that something works, and that applies to everything below.
Honestly, nobody has shown in people how this formula works. What follows is the traditional reasoning plus some laboratory findings on the single herbs.
In Chinese medicine terms, the formula is said to release an outside wind-heat illness while nourishing yin (the body's moistening, cooling side). Yu Zhu (Solomon's seal rhizome) and Da Zao (jujube) are the moistening part; Cong Bai (scallion white), Dan Dou Chi (fermented soybean) and Bo He (mint) are the part that pushes the illness out.
In test tubes and animals, some of these herbs show mild anti-inflammatory, cough-easing and fever-lowering activity. That kind of work does not tell you what a person will feel after drinking the decoction. Treat the mechanism as a theory, not a finding.
The classical form is a water decoction, a strong tea simmered from raw sliced herbs. This is still how most Chinese medicine practitioners give it.
You may also meet it as granules, a dried extract powder that dissolves in hot water. Some suppliers sell it as pills or capsules of concentrated extract.
Strength differs a lot between makers, so a granule scoop is not the same as a bowl of decoction. Buy from a supplier that tests for heavy metals and pesticides. Ask your practitioner which form and which brand they mean.
The formula comes from the Chong Ding Tong Su Shang Han Lun (Revised Popular Guide to the Discussion of Cold Damage), a Qing-dynasty Chinese text credited to Yu Gen-Chu and later editors. It is a reworking of an older Solomon's seal decoction.
It has stayed in Chinese medicine teaching ever since and appears in modern formula textbooks. That gives it a solid place in one tradition, which is a separate matter from clinical proof.
See a doctor if your fever goes above 39 C (102 F), lasts more than three days, or keeps coming back. Get urgent help for trouble breathing, chest pain, a stiff neck, drooling or trouble swallowing, or confusion.
Also see a doctor if your ankles or face swell, your heartbeat feels fast or uneven, you feel unusually weak, or your blood pressure rises. These can be signs of too much licorice. Stop the formula first, then get checked.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
Reviewed by the HealisticMD editorial team How we grade evidence →
The published evidence for Jia Jian Wei Rui Tang is weak or absent. That usually means no controlled trial has tested it, not that a trial found it ineffective — the two are different, and we grade only what has been published.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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