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Taste is slightly bitter and pungent, nature is cool, non-toxic. Enters the Hand-Shaoyang (Sanjiao), Foot-Shaoyang (Gallbladder), Hand-Yangming (Large Intestine), Hand-Shaoyin (Heart), and Foot-Jueyin (Liver) meridians. It expels pus from sores, reduces swelling and toxicity, regulates menstruation, and treats the five types of Lin syndrome (Stone Lin, Blood Lin, Paste Lin, Labor Lin, Qi Lin). It dissipates blood stasis and qi stagnation in various meridians, clears exogenous heat and damp-heat from the Heart and Lungs. It treats Yingliu (goiter or neck masses), Gu poison (parasitic toxins), and white worms (intestinal parasites). It is considered the holy medicine for patients with sores and ulcers across the twelve meridians. Its leaves and stems treat accumulated heat in the Heart and Lungs.

This herb grows everywhere. There are two varieties: large and small. The large variety grows in low, wet areas or hillsides; it has green, narrow, elongated leaves resembling elm leaves, red stems three to four chi high, yellow flowers at the tips, and fruit resembling lotus seeds with internal chambers when ripe in autumn. The small variety grows on hilltops and plains; its flowers, leaves, and fruits resemble those of the large variety but are smaller.

[Prescription 1] For Luoli tubercles (scrofula/cervical lymph node tuberculosis), mix with sesame powder and consume frequently. [First Verified Prescription.]
[Prescription 2] For hemorrhoid swelling and pain, decoct and use for fumigation and washing. [Second.]

Taste is salty, nature is cold, non-toxic. It treats pediatric convulsions and epilepsy, Gan heat (malnutrition fever), erysipelas, treats macules and rashes from Shanghan (cold damage) with headache, hematemesis (vomiting blood), and hemoptysis (coughing up blood). Applied externally, it treats toxic sores, snake bites, and dog bites.

This is the indigo flower from Persia. If unavailable, domestic indigo flower may be used. The current supply comes from Fujian.

[Prescription 1] For heat-pain in the heart region, take one qian with ginger juice. [First Verified Prescription.]
[Prescription 2] For hematemesis due to internal heat, take with newly drawn water. [Second.]
[Prescription 3] For pediatric oral thrush, apply a mixture of Qingdai (Indigo Naturalis) and Huangbai (Phellodendri Cortex) powder to the affected area. [Third.]
[Prescription 4] For pediatric convulsions and epilepsy, take with water. [Fourth.]
[Prescription 5] For nocturnal crying in infants. Same method as above. [Fifth.]
[Prescription 6] For pediatric Gan dysentery. When miscellaneous diseases in children transform into Gan syndrome, regardless of strength or gender, presenting with irritability, fever, scorched hair, dry nose and mouth, withered skin, paralysis of limbs, white abdomen, red eyes, sallow face, red nostrils, and open anus, grinding into powder and taking it yields good results. [Sixth.]
[Prescription 7] For Ergan (ear malnutrition) with discharge, apply together with Huangbai powder. [Seventh.]
[Prescription 8] For rotting eyelids, wash with a decoction of Huanglian (Coptidis Rhizoma). [Eighth.]
[Prescription 9] For postpartum mania, decoct and take with Siwu Tang (Four Substances Decoction). [Ninth.]
[Prescription 10] For red macules/rash from Shanghan, grind with water and take. [Tenth.]
[Prescription 11] For unruptured Luoli tubercles, mash together with Machixian (Portulacae Herba) and apply externally regularly. [Eleventh.]
[Prescription 12] For injuries from various poisonous insects, take with Xionghuang (Realgar) and newly drawn water. [Twelfth.]
[Prescription 13] for Datouwen (Big Head Plague/epidemic parotitis), mix three qian of Qingdai (Indigo Naturalis), one zhong of burning wine, and one egg white, blend evenly, and take. [Thirteenth.]