How does Snow Lotus work in the body?

Snow Lotus (Saussurea costus) contains active compounds such as costunolide and dehydrocostus lactone. These sesquiterpene lactones are believed to provide anti-inflammatory and antimicrobial benefits by inhibiting the NF-kappaB signaling pathway. In Traditional Tibetan Medicine, it is considered a warming tonic that clears lung heat and supports digestion. While these mechanisms are plausible, clinical evidence remains limited (Evidence level: C).

Does Snow Lotus interact with any medications?

Specific drug interaction studies are lacking, but caution is advised. Because Snow Lotus carries a risk of liver stress at high doses, it should not be combined with hepatotoxic drugs like acetaminophen or statins. Due to its potential anti-inflammatory and immunomodulatory actions, patients taking immunosuppressants or NSAIDs should consult a healthcare provider before use (Evidence level: C).

What is the recommended dosage for Saussurea costus?

For adults, the typical dosage of Snow Lotus root powder is 1-3 grams daily. Standardized extracts are generally taken at 300-500 mg per day. It is traditionally prepared as a decoction or taken in capsule form. Users should avoid exceeding these amounts due to potential hepatotoxicity and should follow the guidance of a qualified medical herbalist (Evidence level: Traditional/C).

Is Snow Lotus safe to take during pregnancy?

No, Snow Lotus is contraindicated during pregnancy. Traditional usage and safety data classify it as unsafe for pregnant women. The herb contains potent compounds that may stimulate uterine contractions or cause fetal harm. Breastfeeding women should also avoid this herb. It is vital to consult a healthcare professional before considering this herb if you are pregnant or planning to become pregnant (Evidence level: C/D).

What are the side effects of taking Snow Lotus?

Potential side effects include gastrointestinal irritation, nausea, and stomach upset. More serious concerns involve liver stress and hepatotoxicity, particularly when taken at high doses or for prolonged periods. Users should strictly adhere to recommended dosages to minimize risks. If symptoms of liver distress, such as jaundice or abdominal pain, appear, discontinue use immediately and seek medical attention (Evidence level: C).

What is Snow Lotus used for in Tibetan medicine?

In Sowa Rigpa, Snow Lotus is a sacred herb used primarily for respiratory issues like bronchitis and asthma, acting as an expectorant. It is also utilized for digestive complaints and as a general tonic to alleviate pain and fever. Its anti-inflammatory properties make it a staple for treating various inflammatory conditions, though clinical evidence supports these uses only at a preliminary level (Evidence level: C).

Snow Lotus (Saussurea costus)

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Saussurea costus (and the related S. involucrata) are medicinal herbs used in traditional Asian and Middle Eastern medicine for anti-inflammatory, antimicrobial, and metabolic disorders [PMID: 32730877, 32009958, 39323795].

Background

Saussurea costus (also known as Aucklandia costus or costus) is a perennial herb native to the Himalayan region and widely used in Ayurveda, Unani, Siddha, and Traditional Chinese Medicine [PMID: 32730877, 37755516]. Saussurea involucrata, also called snow lotus, is a rare medicinal plant found at high elevations in the Tianshan Mountains of China [PMID: 32009958, 41351364].

Traditional uses

S. costus is traditionally used for leukoderma, liver and kidney disorders, blood disorders, gastric problems, boils, blisters, leprosy, asthma, and inflammation [PMID: 32730877, 17306480]. S. involucrata is used in Uyghur and Chinese medicine to alleviate rheumatoid arthritis, accelerate blood circulation, and treat 'cold' syndromes [PMID: 32009958].

Active compounds

S. costus contains sesquiterpene lactones (including costunolide, dehydrocostus lactone, and cynaropicrin), flavonoids, and essential oils [PMID: 31402701, 36733833, 17306480, 42055098]. S. involucrata contains acacetin, hispidulin, and apigenin [PMID: 32009958, 41323822, 35280514].

Mechanism of action

S. costus may exert effects via the downregulation of IKBKB and associated inflammatory genes (IKBKG, NfkB1, IL-17A, IL-6, IL-17F, IL-1β, TNF-α, TRAF6, and MAPK) [PMID: 37367922]. S. involucrata-derived polydeoxyribonucleotide (PDRN) is associated with collagen synthesis and reduced reactive oxygen species [PMID: 41351364].

Clinical evidence

Evidence DHypothyroidism

S. costus root extract showed potential in restoring metabolic homeostasis in PTU-induced hypothyroid rat models [PMID: 38253277, 40833088].

Evidence DDiabetes

S. costus demonstrated therapeutic activity and modulation of carbohydrate metabolism in alloxan- and STZ-induced diabetic rat models [PMID: 37367922, 38355028].

Evidence DAtopic Dermatitis

Topical application of S. costus root extract combined with Thuja orientalis L. alleviated skin lesions by inhibiting protease-activated receptor-2 and NF-κB signaling in mice [PMID: 28159725].

Evidence DMammary Tumors

Ethanol root extract of S. costus showed anti-neoplastic activity in a rat mammary tumor model [PMID: 37858751].

Evidence DBenign Prostatic Hyperplasia (BPH)

S. costus administration in testosterone-induced BPH rats affected biological mechanisms leading to progression [PMID: 34171398].

Evidence D

Safety & adverse effects

Costus root oil has been identified as a cause of contact allergy, with positive patch test reactions in over 2% of tested patients [PMID: 27427818]. It also demonstrated moderate UVA-induced photohaemolysis in vitro [PMID: 17598033].

Evidence summary

The majority of evidence is based on in vitro studies, animal models (rats/mice), and literature reviews. There is a lack of high-level clinical trial data (RCTs) in humans.

PubMed sources

1.PMID: 32730877 (2020) — Aucklandia costus (Syn. Saussurea costus): Ethnopharmacology of an endangered medicinal plant of the himalayan region. · Journal of ethnopharmacology
2.PMID: 33026044 (2020) — Clinical significance of Saussurea Costus in thyroid treatment. · Saudi medical journal
3.PMID: 41351364 (2025) — Skin regenerative potential of polydeoxyribonucleotide isolated from Saussurea involucrata. · Cellular and molecular biology (Noisy-le-Grand, France)
4.PMID: 27427818 (2016) — Essential Oils, Part IV: Contact Allergy. · Dermatitis : contact, atopic, occupational, drug
5.PMID: 31402701 (2021) — Sesquiterpenoids from Saussurea costus.

Snow Lotus

Sources & Citations