Herb in Thai notifiable formulas
Blue Thunbergia Leaf
รางจืด · Rang Chuet
Thunbergia laurifolia Lindl.
- Family
- Acanthaceae
- Part used
- leaf
- Crude drug
- Thunbergiae Laurifoliae Folium
- Other names
- Laurel Clock Vine Leaf
- In the announcement
- Used in 2 notifiable formulas (1 as capsules)
Thai Herbal Pharmacopoeia (THP)
Constituents and quality criteria of Blue Thunbergia Leaf
Summarised from the Blue Thunbergia Leaf monograph of the Thai Herbal Pharmacopoeia, Department of Medical Sciences, the standard used to test the dried leaf.
The pharmacopoeia sets no minimum marker content for this herb. Use the raw material quality criteria below for acceptance testing.
Constituents
Blue Thunbergia Leaf contains caffeic acid, flavonoids, sterols, etc.
Raw material quality criteria
| Foreign matter | Not more than 2.0% w/w |
| Loss on drying | Not more than 9.0% w/w |
| Total ash | Not more than 23.0% w/w |
| Acid-insoluble ash | Not more than 11.0% w/w |
| Water-soluble extractive | Not less than 14.0% w/w |
| Ethanol-soluble extractive | Not less than 5.0% w/w |
Source: Thai Herbal Pharmacopoeia, Department of Medical Sciences (online edition, accessed 21 October 2026)Read the full THP monograph
Formulas using Blue Thunbergia Leaf
2 formulas containing Blue Thunbergia Leaf
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 Blue Thunbergia Leaf into a product with the TIBD group
In notifiable formulas2 formulas2 as a single-herb formula
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
K-API · manufacturing in the group
Extract and manufacture at K-API
The TIBD group plant licensed by the Thai FDA to manufacture herbal products, so extraction and production stay within the group.
See the K-API plantTIBD · consultationPlan a product with Blue Thunbergia Leaf
We check whether your formula qualifies for notification, detailed notification or registration with the Thai FDA, then prepare the filing documents.
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