What is Zhi Zi? Are Chao Zhi Zi, Jiao Zhi Zi and Huang Qin the same?
Official Zhi Zi (栀子) is the dried ripe fruit of Gardenia jasminoides. The pharmacopoeial name is Gardeniae Fructus. Raw Zhi Zi is more bitterly cold: drains fire, disinhibits damp, cools Blood and resolves toxin. Chao Zhi Zi is dry-fried to lessen irritation and clear heat to eliminate vexation. Jiao Zhi Zi is scorch-fried and leans toward cooling Blood to stop bleeding. Huang Qin is bitter-cold: clears heat, dries damp, drains fire, resolves toxin, stops bleeding and calms the fetus—a root, not a fruit. Write Zhi Zi, Chao Zhi Zi or Jiao Zhi Zi. Ornamental gardenia flowers are not the decoction herb. Use caution in Spleen vacuity with loose stool.
What are the TCM properties and traditional uses of Zhi Zi?
According to the Chinese Pharmacopoeia, Zhi Zi is bitter and cold, enters the Heart, Lung and Triple Burner channels, and acts to drain fire and eliminate vexation, clear heat and disinhibit damp, cool Blood and resolve toxin; externally, disperse swelling and stop pain. It is used for heat disease with vexation, damp-heat jaundice, strangury with painful dribbling, Blood-heat vomiting and nosebleed, red swollen painful eyes and fire-toxin sores; externally for sprain and contusion pain. Bitter-cold and downbearing, it suits Triple-Burner fire-heat and damp-heat—not Spleen-Stomach deficient cold, loose stool or Stomach cold pain.
How do you choose raw, fried and scorch-fried Zhi Zi?
Heat disease vexation, damp-heat jaundice, strangury and sores more often use raw or fried Zhi Zi. Blood-heat vomiting, nosebleed, bloody urine and flooding more often use Jiao Zhi Zi. External sprain requires raw powder mixed for application. A weak Stomach prefers fried or scorch-fried to lessen bitter-cold irritation.
What is the usual dosage? Can it be drunk daily as a fire-clearing jaundice tea?
The pharmacopoeial decoction dose is 6–10 g; externally, an appropriate amount of raw powder is mixed and applied. It is not a four-season “gardenia fire tea.” Spleen-cold loose stool only grows more draining with cold. Vexation, jaundice and bleeding need a practitioner to name raw, fried or scorch-fried and a short course; it does not replace hepatobiliary and bleeding assessment.
What are the contraindications? Can it be used in pregnancy?
Use caution in Spleen vacuity with loose stool and Stomach-cold pain. Use caution in pregnancy. Stop if cold epigastric-abdominal pain and diarrhea appear. Progressive jaundice and major bleeding are emergencies—do not rely on a gardenia tea alone.
Can Zhi Zi eliminate vexation, abate jaundice and stop bleeding?
It can help Triple-Burner fire-heat and damp-heat. Heat harassing the chest with vexation joins fermented soybean in Zhi Zi Chi Tang. Damp-heat jaundice joins Yin Chen and rhubarb in Yin Chen Hao Tang. Blood-heat bleeding uses Jiao Zhi Zi. Externally it disperses swelling and stops pain in sprain. It drains fire, eliminates vexation, clears heat, disinhibits damp, cools Blood and resolves toxin—not a specific for every insomnia, every jaundice or every nosebleed. Clouded spirit with high fever and acute liver failure are emergencies.
Can Zhi Zi be drunk daily as a fire-clearing, liver-protecting or whitening tea?
Heat-disease vexation and damp-heat jaundice may enter a short formula; Spleen-cold loose stool only grows more draining as it clears. “Gardenia protects the liver and whitens” does not replace liver-function and dermatologic assessment. Draining fire, eliminating vexation, clearing heat and disinhibiting damp should name Zhi Zi 6–10 g.
How do you choose among Zhi Zi, Huang Qin, Huang Lian, Dan Dou Chi and Yin Chen?
Gardenia is bitter-cold: drains fire, eliminates vexation, clears heat, disinhibits damp, cools Blood and resolves toxin—Heart-Lung-Triple Burner, light and downbearing, leading heat out with the urine. Scutellaria is bitter-cold: clears heat, dries damp, drains fire, resolves toxin, stops bleeding and calms the fetus—Lung and Large Intestine. Coptis is bitter-cold: clears heat, dries damp, drains fire and resolves toxin—Heart and Stomach. Fermented soybean is acrid-sweet, slightly bitter and cold: releases the exterior, eliminates vexation and vents constrained heat. Capillary wormwood is bitter-acrid and slightly cold: clears and disinhibits damp-heat and disinhibits the gallbladder to abate jaundice. Vexation with a sense of obstruction favors Zhi Zi with Dan Dou Chi (Zhi Zi Chi Tang); jaundice favors Yin Chen with Zhi Zi (Yin Chen Hao Tang); Lung heat favors Huang Qin; Heart-Stomach fire favors Huang Lian. They may be paired; Spleen vacuity loose stool forbids large bitter-cold doses.
Which herbs is Zhi Zi combined with? What are the representative formulas?
Heat harassing the chest and diaphragm with vexation joins fermented soybean in Zhi Zi Chi Tang. Damp-heat jaundice joins Yin Chen and rhubarb in Yin Chen Hao Tang. Blood-heat bleeding uses Jiao Zhi Zi. Write raw, fried or Jiao Zhi Zi 6–10 g; externally use raw powder.
How do you choose and store Zhi Zi?
Choose large plump fruits, red-yellow or reddish-brown, with a tight seed mass and a slightly sour bitter taste. Moldy, moth-eaten, shriveled lots mixed with flower buds are discarded. Store airy and dry. Buy pharmacopoeial Zhi Zi; prefer fried or scorch-fried if the Stomach is weak; do not replace draining fire, eliminating vexation, clearing heat and disinhibiting damp with Scutellaria or an unidentified fruit by equal weight.
