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Photo of Akebia Stem

Akebia Stem

木通 · Mù Tōng

Unblocks burning, stop-start urination

Properties

CoolingCooling botanicalBitter

What it does

Akebia stem is for urination that burns, drips, and never feels finished. In TCM it pulls inflammatory heat downward and out through your urine, which is why practitioners also use it for ulcers in your mouth, red eyes, and restlessness with dark, scant urine. It has a second, unrelated job: getting milk flowing after birth. The cut stem is honeycombed with tiny holes running right through it.

Safety

  • Serious sourcing history. Buy only from a supplier that names the species and tests for aristolochic acid.
  • Product sold as mù tōng was long Aristolochia manshuriensis or Clematis armandii rather than akebia.
  • The Aristolochia species contains aristolochic acid, a kidney toxin, and should never be used.
  • Akebia is the correct herb, but the two cannot be reliably told apart by eye.
  • Classical sources forbid it in pregnancy specifically, not just as a general caution. Do not take it while pregnant.
  • Not for a cold, weak, depleted picture, or where there is no burning inflammation to drain. It is a draining herb.
  • Also contraindicated if you leak semen or urine easily.
  • The AHPA handbook has no entry for akebia stem, so there is no independent safety or interaction rating.
  • Low toxicity taken orally, but its bitter coldness upsets the stomach on an empty stomach or over long stretches.

How to take it

Drink

Simmer 3–6g of the sliced stem in 3 cups water for 25–30 minutes and drink strained. This is a short-course herb, days rather than weeks, and it is almost always used in a formula rather than alone.

Because of the sourcing risk described in the safety notes, get this one through a practitioner rather than buying it loose

Where it comes from

Akebia stem first appears in the Yào Xìng Lùn, a Tang-dynasty materia medica. Its identity has been unusually turbulent: from the sixteenth to the nineteenth century mù tōng was almost certainly akebia, then it fell out of favor in the early twentieth century and two other vines took its place on the market. The Chinese Pharmacopoeia restored akebia as the standard in 2000. Classically it is an assistant herb, the one that opens a drainage route so heat has somewhere to go.