Gardenia jasminoides

Botanical

What is it

Gardenia jasminoides (cape jasmine, zhi zi) is an evergreen flowering shrub. Its dried fruit is used in traditional Chinese medicine to clear heat and resolve damp, often for inflammatory conditions and liver complaints. Its yellow pigment crocin is also a natural food colorant.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Inflammation and liver support

Limited Evidence

Preclinical evidence is consistent for anti-inflammatory and hepatoprotective effects. Human clinical data are limited and often from TCM combination formulas.

How it works

Gardenia fruit contains geniposide (an iridoid glycoside) and crocins (carotenoid esters that produce yellow color). Geniposide is metabolized by gut bacteria to genipin, which has shown anti-inflammatory, hepatoprotective, and cholagogic activity in preclinical studies. In TCM it is included in classical formulas like Huang Lian Jie Du Tang for inflammatory conditions. Some clinical data suggest benefits for jaundice and liver function.

Dosage

Traditional decoctions use 6 to 9 g of dried fruit. Modern extract products vary.

When and how to take it

Traditionally taken twice daily as part of multi-herb formulas.

1 commercial form

Compare the main delivery options and what they’re best suited for.

Gardenia fruit extract

Standardized to geniposide or crocin content in some products.

Geniposide converted to active genipin by gut bacteria.

Safety

Considered safe at traditional doses with limited reports of adverse effects. High-dose geniposide can be hepatotoxic in animal studies; clinical relevance in humans is unclear but warrants caution at high doses.

Who should be cautious

Avoid in pregnancy and lactation due to limited safety data. Caution in active liver disease.

Interactions

Theoretical interactions with medications affecting bile flow or hepatic clearance. Possible additive effects with anti-inflammatory drugs.

Frequently asked questions

Is gardenia the same as saffron?⌄

No, but both contain crocins. Gardenia fruit pigment can be used as a natural yellow colorant similar to saffron in some applications.

Is gardenia safe for the liver?⌄

Traditional and preclinical data support hepatoprotection at typical doses, but high-dose use has shown liver toxicity in animal studies.

References

Gardenia jasminoides on Wikidata — Wikidata link

Gardenia jasminoides on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Gardenia jasminoides (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.