Cirsium oligophyllum

Botanical

What is it

Cirsium oligophyllum is a thistle species used in some weight-loss and topical cosmetic products. The extract is positioned as a slimming or fat-reducing ingredient, primarily in Japanese formulations.

Evidence for 1 use

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

Subcutaneous fat reduction (topical)

Mixed Evidence

Some animal studies and small human pilot trials suggest modest topical effects on subcutaneous fat. Independent confirmation is limited.

How it works

Cirsium oligophyllum extract contains flavonoids and phenolic acids. Animal and in vitro studies suggest the extract may reduce lipid accumulation in fat cells and decrease subcutaneous fat in mice. The proposed mechanisms include inhibition of adipocyte differentiation and stimulation of lipolysis. Human clinical evidence is limited.

Dosage

No standardized human oral dose. Topical formulations typically contain 0.1 to 1 percent extract.

When and how to take it

Topical: typically applied twice daily per product instructions. No oral timing data established.

1 commercial form

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

Cirsium oligophyllum extract (topical)

Found in cosmetic and slimming products.

Used primarily topically.

Safety

Limited human safety data. Topical use appears generally well tolerated.

Who should be cautious

Avoid in pregnancy and breastfeeding due to lack of safety data. People with allergies to plants in the Asteraceae (daisy) family may react.

Interactions

No significant drug interactions documented.

Frequently asked questions

Does it really reduce fat?⌄

Animal and small pilot data show modest effects. Independent human trial evidence is limited.

Is it safe?⌄

Topical use appears well tolerated. Long-term safety is not established.

References

Cirsium oligophyllum on Wikidata — Wikidata link

Cirsium oligophyllum on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Cirsium oligophyllum (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.