Natural Herb Library

Seville Orange Fruit

Chinese
枳壳
Pinyin
Zhi Qiao
Latin
Fructus Aurantii
Botanical illustration of Fruit of Seville Orange, Citrus x aurantium, showing winged petioles, mature bitter orange fruit, peel section, dried specimen, and diagnostic plant details.
Botanical plate by Kodi .

Known in TCM as Zhi Qiao (枳壳), this bitter and pungent and sour, slightly cold herb enters the Spleen, Stomach, and Large Intestine. Traditionally, it regulates qi and relieves distention - Zhi Qiao is used when the chest, ribs, or abdomen feel full, tight, or stuck from stagnation, most often applied for dyspepsia, abdominal distension, and constipation. Modern research has identified p-Synephrine among its active constituents.

Part used: Fruit

Also Known As

Aurantium

Latin: Fructus Aurantii | Pinyin: Zhi Qiao | Chinese: 枳壳

TCM Properties

Taste
bitter, pungent, sour
Temperature
slightly cold
Channels
Spleen, Stomach, Large Intestine

Traditional Use

Primary Actions

  • Regulates qi and relieves distention - Zhi Qiao is used when the chest, ribs, or abdomen feel full, tight, or stuck from stagnation.
  • Opens the chest and diaphragm - it is a standard addition when constrained qi and phlegm create chest oppression, belching, or discomfort under the ribs.
  • Guides stagnant qi downward - it supports bowel movement and digestive transit when fullness, constipation, or food retention accompany the stagnation.
  • Acts more gently than Zhi Shi - mature Zhi Qiao moves qi without the same strongly breaking quality associated with the immature fruit.

Secondary Actions

  • Traditional herbology consistently contrasts Zhi Qiao with Zhi Shi: both move qi, but Zhi Qiao is broader and milder while Zhi Shi is harsher and more descending.
  • Modern bitter-orange supplement products are often concentrated for stimulant or weight-loss markets and should not be equated with ordinary TCM decoction use.

Classic Formulas

  • Zhi Zhu Wan - classic pairing of Zhi Qiao with Bai Zhu for focal distention, reduced appetite, and postprandial fullness.
  • Qi-regulating formulas pair Zhi Qiao with Chai Hu, Xiang Fu, or Chen Pi when hypochondriac or chest discomfort reflects constrained liver-spleen qi.
  • Chest-obstruction formulas combine it with Gua Lou or Xie Bai when phlegm and qi stagnation create pressure, stuffiness, and pain in the chest.

Classical References

  • Materia medica tradition distinguishes the gentler mature-fruit action of Zhi Qiao from the more forceful breaking action of immature Zhi Shi.
  • Traditional sources also note pregnancy caution and reserve the herb for cases where stagnation and distention are more prominent than frank qi collapse or deficiency.

Modern Research

Active Compounds

  • p-Synephrine - the protoalkaloid most often discussed in modern bitter-orange safety and stimulant literature
  • Naringin and related flavanones - major citrus glycosides relevant to antioxidant and metabolic research
  • Neohesperidin and hesperidin - additional flavonoids commonly profiled in Fructus Aurantii studies
  • Furanocoumarins such as bergapten and 6',7'-dihydroxybergamottin - constituents relevant to CYP3A4 interaction concerns

Studied Effects

  • A 2011 review found that Citrus aurantium and p-synephrine had mixed benefit claims for weight management and raised ongoing concerns about blood pressure effects and CYP3A-related interactions, especially outside traditional decoction contexts (PMID 21480414).
  • A 2018 interaction study evaluating Fructus Aurantii against CYP1A2, CYP3A4, and CYP2E1 pathways concluded that Citrus aurantium has meaningful drug-interaction potential that deserves attention when combined with pharmaceuticals metabolized through these systems (PMID 30233359).
  • A 2024 integrated UPLC/Q-TOF-MS and network-pharmacology study compared Aurantii Fructus Immaturus and Aurantii Fructus, expanding the modern phytochemical map and highlighting neuroprotective candidate constituents and targets (PMID 38399454).

PubMed References

Safety & Interactions

Contraindications

  • Pregnancy without qualified supervision
  • Marked qi deficiency or prolapse patterns without clear stagnation or distention

Cautions

  • Weight-loss or sports-performance bitter-orange extracts are not equivalent to traditional Zhi Qiao decoction material and may deliver much higher p-synephrine exposure.
  • Patients with hypertension, palpitations, or stimulant sensitivity should treat concentrated bitter-orange products cautiously, especially when caffeine is also present.
  • Because bitter orange contains furanocoumarins and alkaloids relevant to drug metabolism and cardiovascular tone, medication review is important before supplement use.

Drug Interactions

  • CYP3A4 substrate drugs - bitter orange contains furanocoumarins that may alter drug metabolism and raise serum levels of susceptible medicines
  • Stimulants or caffeine-containing products - combined use may increase cardiovascular stimulation, blood pressure, or palpitations

Conditions

Frequently Asked Questions

What is Seville Orange Fruit used for?

Seville Orange Fruit is traditionally used to Regulates qi and relieves distention - Zhi Qiao is used when the chest, ribs, or abdomen feel full, tight, or stuck from stagnation., Opens the chest and diaphragm - it is a standard addition when constrained qi and phlegm create chest oppression, belching, or discomfort under the ribs., Guides stagnant qi downward - it supports bowel movement and digestive transit when fullness, constipation, or food retention accompany the stagnation., Acts more gently than Zhi Shi - mature Zhi Qiao moves qi without the same strongly breaking quality associated with the immature fruit.. Research has investigated its effects on: A 2011 review found that Citrus aurantium and p-synephrine had mixed benefit claims for weight management and raised ongoing concerns about blood pressure effects and CYP3A-related interactions, especially outside traditional decoction contexts (PMID 21480414).; A 2018 interaction study evaluating Fructus Aurantii against CYP1A2, CYP3A4, and CYP2E1 pathways concluded that Citrus aurantium has meaningful drug-interaction potential that deserves attention when combined with pharmaceuticals metabolized through these systems (PMID 30233359)..

What are other names for Seville Orange Fruit?

Seville Orange Fruit is also known as Aurantium. In TCM: 枳壳 (Zhi Qiao); Fructus Aurantii.

Is Seville Orange Fruit safe during pregnancy?

The safety of Seville Orange Fruit during pregnancy has not been established. Consult a qualified healthcare provider before use.

What are the contraindications for Seville Orange Fruit?

Seville Orange Fruit should not be used in: Pregnancy without qualified supervision; Marked qi deficiency or prolapse patterns without clear stagnation or distention. Consult a qualified practitioner before use.

Does Seville Orange Fruit interact with any medications?

Seville Orange Fruit may interact with: CYP3A4 substrate drugs - bitter orange contains furanocoumarins that may alter drug metabolism and raise serum levels of susceptible medicines; Stimulants or caffeine-containing products - combined use may increase cardiovascular stimulation, blood pressure, or palpitations. Always inform your healthcare provider of any herbal supplements you are taking.