Herb in Thai notifiable formulas

Siam Cardamom

กระวาน · Krawan

Wurfbainia testacea (Ridl.) Škorničk.& A. D. Poulsen

Family
Zingiberaceae
Part used
fruit
Crude drug
Wurfbainiae Testaceae Fructus
Other names
Camphor Seed, Round Cardamom, Round Cardamom Fruit
In the announcement
Used in 38 notifiable formulas (13 as capsules)
Siam Cardamom, dried ripe fruit
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 Siam Cardamom

Summarised from the Siam Cardamom monograph of the Thai Herbal Pharmacopoeia, Department of Medical Sciences, the standard used to test the dried ripe fruit.

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

Constituents

Siam Cardamom contains volatile oil, of which 1,8-cineole, β-pinene and borneol are its major components. Description of plant (Fig. 1) Perennial herb, 1.3 to 2.5 m tall; rhizome white, widely creeping. Leaves simple, distichous, 7 to 18 per pseudostem, leaf blade lanceolate to oblong, 13 to 62 cm long, 6 to 13 cm wide, apex acuminate or cuspidate, base attenuate or narrowly cuneate into winged-like petiole, margin entire, glabrous on both surfaces; ligule bilobed, about 5 mm long, usually papery, with stiff hair along margin. Inflorescence spike, arising from rhizome, cylindric or conical, 5 to 14 cm long, 4 to 5 cm wide; peduncle 4 to 15 cm long; bract pale brown, narrowly triangular, striate, 3 to 5 cm long, 1 to 2 cm wide, apex acuminate or apiculate, papery, with stiff, long hair; bracteole creamy white, tubular, 1.8 to 2 cm long, apex deeply bilobe. Flower: calyx tubular, 1.8 to 2.

Raw material quality criteria

Foreign matterNot more than 2.0% w/w
Total ashNot more than 10.0% w/w
Acid-insoluble ashNot more than 3.0% w/w
Water-soluble extractiveNot less than 6.0% w/w
Volatile oilNot less than 4.0% v/w

Storage: Siam Cardamom shall be kept in well-closed containers, preferably of metal or glass, protected from light 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 Siam Cardamom

38 formulas containing Siam Cardamom

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 Siam Cardamom into a product with the TIBD group

In notifiable formulas38 formulasused in multi-herb formulas
THP raw-material criteria5 testsfor acceptance testing before production
Marker with a minimum contentNot setquality is checked with the raw-material criteria
Testing in the groupVISBIOVolatile compound analysis by GC-MS

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