Herb in Thai notifiable formulas
Picrorhiza Rhizome
โกฐก้านพร้าว · Kot Kan Phrao
Neopicrorhiza scrophulariiflora Pennell
- Family
- Plantaginaceae
- Part used
- root and rhizome
- Crude drug
- Neopicrorhizae Scrophulariiflorae Rhizoma
- Other names
- Katuka, Kutki
- In the announcement
- Used in 14 notifiable formulas (4 as capsules)
Thai Herbal Pharmacopoeia (THP)
Constituents and quality criteria of Picrorhiza Rhizome
Summarised from the Figwortflower Picrorhiza Rhizome monograph of the Thai Herbal Pharmacopoeia, Department of Medical Sciences, the standard used to test the dried rhizome.
The pharmacopoeia sets no minimum marker content for this herb. Use the raw material quality criteria below for acceptance testing.
Constituents
Figwortflower Picrorhiza Rhizome contains iridoid glycosides (e.g., kutkoside, picrosides, picrorosides) and cucurbitacin triterpenoids. It also contains apocynin, cinnamic acid, vanillic acid, etc.
Raw material quality criteria
| Foreign matter | Not more than 2.0% w/w |
| Loss on drying | Not more than 11.0% w/w |
| Total ash | Not more than 5.0% w/w |
| Acid-insoluble ash | Not more than 2.0% w/w |
| Ethanol-soluble extractive | Not less than 30.0% w/w |
Storage: Figwortflower Picrorhiza Rhizome shall be kept in well-closed containers, protected from light, and stored in a dry place.
Source: Thai Herbal Pharmacopoeia, Department of Medical Sciences (online edition, accessed 21 October 2026)Read the full THP monograph
Formulas using Picrorhiza Rhizome
14 formulas containing Picrorhiza Rhizome
Select a formula to see its ingredients and indications. Formula names and indications are a reference translation; the Thai announcement is the legal text.
- Ya That Banchop Digestive element formula for bloating and loose stoolsRelieves abdominal bloating and flatulence; relieves abnormal stools due to disordered elements (utchara that phikan), diarrhea not caused by infection, e.g. stool without mucus or blood, and diarrhea without fever
- Ya Maha Chak Yai Traditional formula for lom sang and bloatingRelieves lom sang (a wind (lom) disorder associated with childhood sang), relieves abdominal bloating and flatulence
- Ya Ritsiduang Mahakan Traditional formula for hemorrhoidsRelieves symptoms of hemorrhoids
- Ya Sahatsathara Traditional formula to expel wind in the channelsExpels wind (lom) in the channels (sen), relieves coarse wind disorders (lom kong yap)
- Ya Hom Inthachak Fragrant formula for faintness and nauseaRelieves lom bat tha chit (a wind (lom) disorder affecting the mind), relieves nausea and vomiting, relieves wind (lom) causing abdominal colic/flatulent discomfort
- Ya Hom Inthachak Fragrant formula for faintness and nauseaRelieves lom bat tha chit (a wind (lom) disorder affecting the mind), relieves nausea and vomiting, relieves wind (lom) causing abdominal colic/flatulent discomfort
- Ya Hom Thep Chit Fragrant cordial formula for dizziness and palpitationsRelieves subtle wind (lom kong la-iat) causing symptoms such as dizziness, faintness (sawing sawai), palpitations, etc., and nourishes the mind (bamrung duang chit) so that it is refreshed
- Ya Kamlang Ratchasi Formula 2 Lion's strength blood and body tonic, Formula 2Blood tonic (bamrung lohit), body tonic
- Ya That Banchop Digestive element formula for bloating and loose stoolsRelieves abdominal bloating and flatulence; relieves abnormal stools due to disordered elements (utchara that phikan), diarrhea not caused by infection, e.g. stool without mucus or blood, and diarrhea without fever
- Ya That Banchop Digestive element formula for bloating and loose stoolsRelieves abdominal bloating and flatulence; relieves abnormal stools due to disordered elements (utchara that phikan), diarrhea not caused by infection, e.g. stool without mucus or blood, and diarrhea without fever
- Ya Hom Nawakot Fragrant nine-kot formula for dizziness and nauseaRelieves dizziness due to wind (lom wing wian), nausea and vomiting (wind causing tightness in the chest, lom chuk naen nai ok) in the elderly; relieves post-fever wind (lom plai khai) (after recovering from fever, symptoms remain such as nausea, dizziness, loss of appetite, abdominal bloating and fatigue)
- Ya Maha Chak Yai Traditional formula for lom sang and bloatingRelieves lom sang (a wind (lom) disorder associated with childhood sang), relieves abdominal bloating and flatulence
- Ya Hom Thipphaosot Divine-remedy fragrant formula for dizzinessRelieves dizziness due to wind (lom wing wian)
- Ya Suwannakesara Traditional pregnancy tonic formulaPregnancy tonic (bamrung khan); relieves fever during pregnancy (khai nai khan raksa)
Development potential
Develop Picrorhiza Rhizome into a product with the TIBD group
In notifiable formulas14 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
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 Picrorhiza Rhizome
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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