Age Ayurveda Nighantu

Fennel

Foeniculum vulgare

Fennel (Foeniculum vulgare) is a plant used in Ayurveda. trans-Anethole has good oral bioavailability (>50%) with rapid GI absorption. It is metabolized by CYP enzymes to 4-methoxybenzoic acid. Estragole (minor component, 1-5%) has regulatory attention due to genotoxicity concerns in isolated form.

Key facts
Botanical nameFoeniculum vulgare
FamilyApiaceae · other entries in this family
OrderApiales
Taxon identifiersGBIF 3034922 · Wikidata Q43511 · NCBI Taxonomy 2849586

This entry and mishreya describe the same drug, Foeniculum vulgare, under different names. Both pages are kept because both names are in use; the other is treated as the primary record for citation.

Names and identification

LanguageName
EnglishFennel

What is it made of?

Key Active Markers

  • Derived from constituent herbs (see individual herb profiles)
  • Standardized on primary bioactive markers

Analytical Methods: HPLC fingerprinting, TLC (identity), LC-MS/MS (marker quantification)

Dosage forms and preparation

Dosage Forms: Essential oil, Capsule (oil or extract), Tablet, Gripe water (infant formulation), Tea/infusion, Tincture, Arka (distillate)

Standard Dosage: Essential oil: 100-200mg (0.1-0.6ml) in enteric capsule daily; seed: 1-4g as tea/infusion 2-3 times daily; tincture: 2-5ml three times daily; gripe water: as directed for infants

Bioavailability: Foeniculum vulgare essential oil contains trans-anethole (80-90%) as the dominant constituent. trans-Anethole has good oral bioavailability (>50%) with rapid GI absorption. It is metabolized by CYP enzymes to 4-methoxybenzoic acid. Estragole (minor component, 1-5%) has regulatory attention due to genotoxicity concerns in isolated form. Fenchone (5-15%) has good bioavailability and contributes to carminative action. Aqueous infusion of seeds provides flavonoids and phenolic acids with moderate bioavailability. Enhancement: microencapsulation of essential oil prevents volatile loss and provides sustained release.

Optimal Timing: After meals for digestive support; fennel tea throughout the day as a gentle carminative; gripe water for infants after feeding

Standardized Extract: Essential oil: NLT 80% trans-anethole, NMT 5% estragole, NMT 15% fenchone by GC-FID (Ph. Eur. specification). Seed extract: NLT 2% volatile oil by distillation. Oleoresin: 50-55% volatile oil.

Shelf Life: Whole seeds: 2-3 years; Powder: 6-12 months (volatile loss); Essential oil: 3-4 years; Capsules: 2 years; Tincture: 3 years

Storage: Whole seeds: airtight containers at room temperature. Essential oil: amber glass above 25 deg C (to prevent crystallization) in sealed containers. Ground seeds: nitrogen-flushed, sealed containers, use promptly. Protect from light.

Marker Compounds: trans-Anethole, Fenchone, Estragole (methylchavicol) - monitored for safety, Limonene, Alpha-pinene, Rosmarinic acid, Quercetin-3-glucuronide

Extraction Methods

  • Steam distillation of ripe fruits (seeds) for essential oil
  • Hydrodistillation
  • Supercritical CO2 extraction (low estragole, preferred)
  • Hot water infusion for tea
  • Hydroalcoholic extraction (60:40) for non-volatile constituents

Synergistic Combinations

Published research

Literature indexed in PubMed that concerns this subject, grouped by study type. A paper appearing here is a record of what has been published, not evidence that the subject works, and laboratory or animal results do not transfer to people. Study titles link to PubMed so you can read the source rather than take our word.

Other clinical studies and reviews10

  1. Giachino RRA, Boztaş G. 2025. Advanced techniques and applications in fennel (Foeniculum vulgare Mill.) breedingMolecular genetics and genomics : MGG. PMID 40892151 · doi:10.1007/s00438-025-02294-y
  2. Magon G, Palumbo F, Barcaccia G. 2025. Genetics, genomics and breeding of fennelBMC plant biology. PMID 40335931 · doi:10.1186/s12870-025-06608-5
  3. Rafieian F, Amani R, Rezaei A and others. 2024. Exploring fennel (Foeniculum vulgare): Composition, functional properties, potential health benefits, and safetyCritical reviews in food science and nutrition. PMID 36803269 · doi:10.1080/10408398.2023.2176817
  4. Vella FM, Pignone D, Laratta B. 2024. The Mediterranean Species Calendula officinalis and Foeniculum vulgare as Valuable Source of Bioactive CompoundsMolecules (Basel, Switzerland). PMID 39124999 · doi:10.3390/molecules29153594
  5. Nafees S, Akhtar J, Kaur J. 2022. Indian traditional medicinal plants in ophthalmic diseasesAvicenna journal of phytomedicine. PMID 36583172 · doi:10.22038/AJP.2022.20345
  6. Khan RU, Fatima A, Naz S and others. 2022. Perspective, Opportunities and Challenges in Using Fennel (Foeniculum vulgare) in Poultry Health and Production as an Eco-Friendly Alternative to Antibiotics: A ReviewAntibiotics (Basel, Switzerland). PMID 35203880 · doi:10.3390/antibiotics11020278
  7. Mahboubi M. 2019. Foeniculum vulgare as Valuable Plant in Management of Women's HealthJournal of menopausal medicine. PMID 31080784 · doi:10.6118/jmm.2019.25.1.1
  8. Jadoon S, Karim S, Bin Asad MH and others. 2015. Anti-Aging Potential of Phytoextract Loaded-Pharmaceutical Creams for Human Skin Cell LongetivityOxidative medicine and cellular longevity. PMID 26448818 · doi:10.1155/2015/709628
  9. Badgujar SB, Patel VV, Bandivdekar AH. 2014. Foeniculum vulgare Mill: a review of its botany, phytochemistry, pharmacology, contemporary application, and toxicologyBioMed research international. PMID 25162032 · doi:10.1155/2014/842674
  10. 2006. Fennel PMID 30000852

Laboratory and animal studies2

  1. Brinza I, Boiangiu RS, Todirascu-Ciornea E and others. 2025. Foeniculum vulgare Mill. Mitigates Scopolamine-Induced Cognitive Deficits via Antioxidant and Neuroprotective Mechanisms in ZebrafishMolecules (Basel, Switzerland). PMID 40649373 · doi:10.3390/molecules30132858
  2. Križman M, Jakše J. 2022. Chemical and Genetic Variability of Istrian Foeniculum vulgare Wild PopulationsPlants (Basel, Switzerland). PMID 36079624 · doi:10.3390/plants11172239

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Educational reference only. Nothing on this page is medical advice, a diagnosis, or a recommendation to take anything. Traditional uses and research findings are reported as published, not as claims about what any product does. If you take prescribed medication, raise any interaction with the prescriber rather than acting on a page. See our editorial standards.