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Photo of Chinese Gentian

Chinese Gentian

龙胆 · Lóng Dǎn

Cools furious eyes, ears, and inflamed skin

Properties

CoolingCooling botanicalBitter

What it does

Chinese gentian is for inflammation that has turned aggressive. In TCM it's used for Liver fire, intense pressurized heat that pushes up into your eyes and ears, so the picture is red swollen eyes, sore or muffled hearing, and yellowed skin. It's also used for itchy inflamed rashes around the genitals. One of the most bitter things in the cabinet, and that's both the point and the limit.

Safety

  • Not for cold, weak digestion with loose stools, low appetite, and a preference for hot food. It worsens that.
  • Too much can upset digestion and cause headache, facial flushing, and dizziness.
  • Bitter herbs like this irritate the stomach lining, so a poor match for ulcers or an easily irritated gut.
  • Safety references note it may cause drowsiness or sedation. Don't pair a first dose with driving.
  • Skip it while pregnant. No safety data exists, and a related gentian has a reputation for bringing on menstruation.
  • Adulteration is the real risk with this root. Buy from a supplier that names and tests species, and never wild-collect.
  • Classical sources flag Sinopodophyllum emodi (guǐ jiù), a toxic adulterant indistinguishable by appearance.
  • In Europe, home-collectors have mistaken Veratrum for yellow gentian, causing serious heart and gut effects.

How to take it

Drink

Simmer 3–9g in 3 cups water for 20–25 minutes and drink strained, after food rather than on an empty stomach. Short courses only, a few days to a couple of weeks, not an ongoing daily tea.

This one is bitter enough and cold enough that it belongs in a practitioner's formula rather than a solo experiment

Where it comes from

Chinese gentian appears in the Shén Nóng Běn Cǎo Jīng. Its name literally reads 'dragon gallbladder herb,' a nod to how ferociously bitter the root is. Several Gentiana species are used, mostly gathered in northern China, and the root and rhizome are the medicinal parts. Classically it is the lead herb in Gentian Decoction to Drain the Liver, where its job is to pull aggressive heat out of the Liver and Gallbladder and send it down and out through the urine.