Educational information, not medical advice — ask your doctor or midwife.
Akebia trifoliata is a climbing woody vine from East Asia. In Chinese medicine the dried stem is used, under the name mu tong. The ripe fruit is also eaten as a food in China, Japan and Korea.
The stem was given in old formulas to increase urine flow and to "clear heat". Modern human evidence for any of these uses is very thin. Traditional use is not proof that something works, and it is not proof that something is safe.
One safety point matters more than any claimed benefit. Herbs sold as "mu tong" have at times been the wrong plant. Some of those substitutes contain aristolochic acid, which has caused kidney failure and cancer of the bladder lining.
That problem is about labelling and supply, not about Akebia itself. Correctly identified Akebia stem is not known to contain aristolochic acid. But you cannot tell the species apart by eye in a bag of dried slices.
No one has shown in people how this plant works, or that it works at all.
The stem holds triterpenoid saponins. These are soap-like plant compounds found in many herbs. In rodent studies, akebia stem extracts have raised urine output.
Whether that happens in people at normal amounts has not been tested properly. A result in a rat is a hint, not a finding about you.
In cell and test-tube studies, akebia saponins appear to lower some markers of inflammation. Those results come from dishes and plates. They do not show that the herb helps any disease.
Tradition explained the herb in its own language. The stem was said to open the "water passages" and drain damp heat. That is a traditional idea, not a tested mechanism.
Most products are dried stem, cut into thin slices for boiling.
You may meet it as: - Dried stem slices, boiled into a tea (decoction) - Granules or powders made from a stem extract - Multi-herb Chinese patent formulas, where it is one item on the list - Fresh fruit, jam, juice or wine, sold as food - Seed oil, used for cooking in some regions
Labels vary a lot in quality. A trustworthy label names the full plant species and the plant part. Avoid any product that just says "mu tong" with no species name.
The stem has a long record in Chinese medicine, under the name mu tong.
Classical texts placed it among herbs that promote urine flow. It appeared in formulas for burning or difficult urination, for swelling, and to encourage breast milk. It was usually given in small amounts, as one part of a mixed formula, for a short course.
The name itself caused harm in the twentieth century. Several unrelated plants were sold as mu tong. One of them, guan mu tong, was Aristolochia manshuriensis.
That substitute poisoned people. Cases of kidney failure and cancer of the bladder lining were reported from Belgium, China and elsewhere. China removed Aristolochia manshuriensis from its pharmacopoeia in 2003.
This history is the reason the page treats sourcing as the main issue. The tradition is old, but the modern supply chain has failed before.
Stop and speak to a doctor if you notice any of these: - You are passing much less urine than usual - Blood in your urine - Swelling of the legs, ankles or face - Pain in your back or side, below the ribs - Unusual tiredness with nausea
Go to urgent care the same day for blood in the urine or a sharp drop in urine output. Tell the clinician exactly which herb product you took, and bring the packet.
In China, Akebia stem is listed in the Chinese Pharmacopoeia as Akebiae Caulis. In the United States it is sold as a dietary supplement, not as an approved medicine. In the UK and EU there is no licensed herbal medicine made from it, and Aristolochia species are banned in many countries.
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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