Herb in Thai notifiable formulas
Sweet Fennel
เทียนข้าวเปลือก · Thian Khao Plueak
Foeniculum vulgare Mill.
- Family
- Umbelliferae
- Part used
- fruit
- Crude drug
- Foeniculi Dulcis Fructus
- In the announcement
- Used in 20 notifiable formulas (5 as capsules)
Thai Herbal Pharmacopoeia (THP)
Constituents and quality criteria of Sweet Fennel
Summarised from the Sweet Fennel monograph of the Thai Herbal Pharmacopoeia, Department of Medical Sciences, the standard used to test the dried cremocarp and mericarp.
The pharmacopoeia sets no minimum marker content for this herb. Use the raw material quality criteria below for acceptance testing.
Constituents
Sweet Fennel contains volatile oil of which anethole, estragole and fenchone are its major components. It also contains flavonoids.
Raw material quality criteria
| Foreign matter | Not more than 1.5% w/w |
| Total ash | Not more than 9.0% w/w |
| Acid-insoluble ash | Not more than 0.7% w/w |
| Ethanol-soluble extractive | Not less than 7.0% w/w |
| Volatile oil | Not less than 2.0% v/w |
Storage: Sweet Fennel 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 Sweet Fennel
20 formulas containing Sweet Fennel
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 Prasa Pro Yai Kaempferia formula for childhood tan sangCounteracts the toxic effects (thon phit) of tan sang (a traditional Thai childhood disorder) in children with symptoms such as abdominal pain, abdominal bloating and flatulence, frequent small loose stools, loss of appetite, etc.
- Ya Mantha That Formula for weak digestion and bloatingRelieves abdominal bloating and flatulence, relieves disordered elements (that)
- 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 Bamrung Lohit Blood-nourishing formulaBlood tonic (bamrung lohit)
- Ya Prasa Pro Yai Kaempferia formula for childhood tan sangCounteracts the toxic effects (thon phit) of tan sang (a traditional Thai childhood disorder) in children with symptoms such as abdominal pain, abdominal bloating and flatulence, frequent small loose stools, loss of appetite, etc.
- Ya Prasa Pro Yai Kaempferia formula for childhood tan sangCounteracts the toxic effects (thon phit) of tan sang (a traditional Thai childhood disorder) in children with symptoms such as abdominal pain, abdominal bloating and flatulence, frequent small loose stools, loss of appetite, etc.
- 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 1 Lion's strength blood tonic, Formula 1Blood tonic (bamrung lohit)
- Ya Kamlang Ratchasi Formula 2 Lion's strength blood and body tonic, Formula 2Blood tonic (bamrung lohit), body tonic
- 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 Mantha That Formula for weak digestion and bloatingRelieves abdominal bloating and flatulence, relieves disordered elements (that)
- 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 Namman Maha Chak Formula 1 Maha Chak medicated oil for aches and wounds, Formula 1Applied to the skin to relieve body aches and pains; treats fresh wounds and spreading ulcerated sores; applied in the ear (yon hu) to relieve itching
- Ya Namman Maha Chak Formula 2 Maha Chak medicated oil for aches and wounds, Formula 2Applied to the skin to relieve body aches and pains; treats fresh wounds and spreading ulcerated sores; applied in the ear (yon hu) to relieve itching
- Ya Kae Ai Mai Mi Samha Formula 3 Formula for dry cough, Formula 3Relieves cough without phlegm
- Ya Bamrung Lohit Blood-nourishing formulaBlood tonic (bamrung lohit)
Development potential
Develop Sweet Fennel into a product with the TIBD group
In notifiable formulas20 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
VISBIO · laboratory in the TIBD group
Volatile compound analysis by GC-MS
Analytical testing of Sweet Fennel raw materials and products by VISBIO, the laboratory in our group.
See the VISBIO serviceK-API · manufacturing in the groupExtract 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 Sweet Fennel
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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