Herb in Thai notifiable formulas

Costus Root

โกฐกระดูก · Kot Kraduk

Aucklandia lappa Decne

Family
Compositae
Part used
root
Crude drug
Aucklandiae Lappae Radix
Other names
Costus Root, Kut Root, Kuth Root, Saussurea Root
In the announcement
Used in 12 notifiable formulas (3 as capsules)
Costus Root, dried root
AI-generated illustration based on the crude drug description in the Thai Herbal Pharmacopoeia; not a photograph of an actual sample.
Thai Herbal Pharmacopoeia (THP)

Constituents and quality criteria of Costus Root

Summarised from the Common Aucklandia Root monograph of the Thai Herbal Pharmacopoeia, Department of Medical Sciences, the standard used to test the dried root.

The pharmacopoeia sets no minimum marker content for this herb. Use the raw material quality criteria below for acceptance testing.

Constituents

Common Aucklandia Root contains volatile oil, of which dehydrocostus lactone and costunolide are its major components. It also contains alkaloids (e.g., saussurine), cyanopicrin, etc.

Raw material quality criteria

Foreign matterNot more than 2.0% w/w
Total ashNot more than 6.0% w/w
Acid-insoluble ashNot more than 1.0% w/w
Water-soluble extractiveNot less than 27.0% w/w
Ethanol-soluble extractiveNot less than 11.0% w/w
Volatile oilNot less than 0.7% v/w

Storage: Common Aucklandia Root shall be kept in well-closed containers, protected from light and moisture, and stored in a cool and dry place.

Source: Thai Herbal Pharmacopoeia, Department of Medical Sciences (online edition, accessed 21 October 2026)Read the full THP monograph
Formulas using Costus Root

12 formulas containing Costus Root

Select a formula to see its ingredients and indications. Formula names and indications are a reference translation; the Thai announcement is the legal text.

Development potential

Develop Costus Root into a product with the TIBD group

In notifiable formulas12 formulasused in multi-herb formulas
THP raw-material criteria6 testsfor acceptance testing before production
Marker with a minimum contentNot setquality is checked with the raw-material criteria

Three ways forward 1Notify a listed formula2Adapt it through detailed notification3Develop a Category B herbal medicine or Category C health productSee the development pathway