Plant Comparison

Fennel vs Horehound

A side-by-side comparison of two medicinal plants — every documented constituent, action, use, safety note and cited source, assembled automatically from the Omnia Sana database.

First plant

Second plant

Plant AFennelFoeniculum vulgareApiaceaeFull monograph →

Plant BHorehoundMarrubium vulgareLamiaceaeFull monograph →

At a glance

Fennel and Horehound: they share 5 indicated uses (bronchitis, cough, menstrual cramps, …); 2 pharmacological actions in common.

FennelHorehound

Constituents43

Pharmacological actions35

Indicated uses810

Safety notes102

Cited sources2114

Indicated uses

Only Fennel

Infection (general)Pain (general)Wounds

Shared (5)

BronchitisCoughMenstrual crampsMuscle spasmRespiratory support

Only Horehound

Loss of appetiteBloatingCancer (anticancer research)IndigestionSore throat

Pharmacological actions

Only Fennel

Antimicrobial

Shared (2)

AntispasmodicExpectorant

Only Horehound

Anticancer (preclinical)Bitter digestive tonic / stomachicDigestive aid

Evidence face-off — shared uses

Condition	Fennel	Horehound	Verdict
Bronchitis	1/10	2/10	Comparable evidence
Cough	1/10	1/10	Comparable evidence
Menstrual cramps	9/10	1/10	Stronger for Fennel
Muscle spasm	1/10	2/10	Comparable evidence
Respiratory support	1/10	2/10	Comparable evidence

Evidence scores (1–10) are computed from the tier of each cited source. “Comparable” means the two scores are within one point. Follow a score to its detailed sources.

Key Constituents

Essential oil (mainly trans-anethole, with fenchone and estragole/methyl chavicol)^{[1, 3, 7]}

The aromatic volatile oil of the seed; trans-anethole is the principal component and is associated with the antispasmodic, carminative and estrogen-like activity.

Essential (volatile) oil

Flavonoids (quercetin, rutin and kaempferol glycosides)^[3]

Antioxidant polyphenolic constituents.

FlavonoidsGlycosidesKaempferolQuercetinRutin

Phenolic acids (chlorogenic, caffeic and rosmarinic acids)^{[3, 8]}

Antioxidant and anti-inflammatory constituents.

Rosmarinic acidPhenolic acidsChlorogenic acidCaffeic acid

Fatty acids (chiefly petroselinic acid) and amino acids^[3]

Major constituents of the fruit/seed oil.

Labdane diterpene marrubiin^{[11, 12, 13]}

The characteristic bitter principle (pharmacopoeial material contains at least 0.7%); drives the expectorant and digestive actions. A phytochemical/pharmacological overview identifies marrubiin and the phenolic fraction as the basis for antioxidant, anti-inflammatory and antimicrobial activity.

Terpenes / terpenoids

Flavonoids and phenylethanoid esters (e.g. verbascoside)^{[11, 12]}

Antioxidant and anti-inflammatory constituents.

Verbascoside (acteoside)Flavonoids

Tannins and volatile oil^[12]

Astringent and aromatic constituents of the herb.

Essential (volatile) oilTannins

Pharmacological Actions

Antimicrobial^{[1, 3, 9, 14]}

Antispasmodic^{[3, 14]}

Antispasmodic (cramp easing)

Expectorant^{[3, 14]}

Anticancer (preclinical)^[14]

Antispasmodic^{[6, 12]}

Antispasmodic (traditional use in whooping cough)

Bitter digestive tonic / stomachic^[11]

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

Digestive aid^[11]

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

Expectorant^{[2, 7, 11, 12]}

Expectorant for productive cough and catarrh of the upper respiratory tract / bronchitis

Traditional & Indicated Uses

Bronchitis^{[3, 14]}Traditional · 1/10

inferred from expectorant action

Evidence: 1

Label: Bronchitis

Cough^{[3, 14]}Traditional · 1/10

inferred from expectorant action

Evidence: 1

Label: Cough

Infection (general)^{[3, 14]}Traditional · 1/10

inferred from antimicrobial action

Evidence: 1

Label: Infection (general)

Menstrual cramps^{[6, 11, 12]}Strong · 9/10

Relieves primary dysmenorrhoea (menstrual) pain - meta-analyses of RCTs find fennel reduces pain intensity versus placebo, comparable to mefenamic acid

Evidence: 9

Label: Menstrual cramps

Muscle spasm^{[3, 14]}Traditional · 1/10

inferred from antispasmodic action

Evidence: 1

Label: Muscle spasm

Pain (general)^{[6, 12]}Good · 8/10

Relieves primary dysmenorrhoea (menstrual) pain - meta-analyses of RCTs find fennel reduces pain intensity versus placebo, comparable to mefenamic acid

Evidence: 8

Label: Pain (general)

Respiratory support^{[3, 14]}Traditional · 1/10

inferred from expectorant action

Evidence: 1

Label: Respiratory support

Wounds^{[3, 14]}Traditional · 1/10

inferred from antimicrobial action

Evidence: 1

Label: Wounds

Loss of appetite^{[2, 11]}Traditional · 1/10

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

Evidence: 1

Label: Loss of appetite

Bloating^[11]Traditional · 1/10

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

Evidence: 1

Label: Bloating

Bronchitis^{[2, 7, 11, 12]}Traditional · 2/10

Expectorant for productive cough and catarrh of the upper respiratory tract / bronchitis

Evidence: 2

Label: Bronchitis

Cancer (anticancer research)^[14]Traditional · 2/10

inferred from anticancer action

Evidence: 2

Label: Cancer (anticancer research)

Cough^{[2, 11, 12]}Traditional · 1/10

Antispasmodic (traditional use in whooping cough); Expectorant for productive cough and catarrh of the upper respiratory tract / bronchitis

Evidence: 1

Label: Cough

Indigestion^{[2, 11]}Traditional · 1/10

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

Evidence: 1

Label: Indigestion

Menstrual cramps^[12]Traditional · 1/10

inferred from antispasmodic action

Evidence: 1

Label: Menstrual cramps

Muscle spasm^{[6, 12]}Traditional · 2/10

inferred from antispasmodic action

Evidence: 2

Label: Muscle spasm

Respiratory support^{[2, 7, 11, 12]}Traditional · 2/10

inferred from expectorant action

Evidence: 2

Label: Respiratory support

Sore throat^{[11, 12]}Traditional · 1/10

Soothes sore throat (traditional)

Evidence: 1

Label: Sore throat

Safety, Cautions & Contraindications

Safety note^[14]Info

When taken by mouth: Fennel is commonly consumed in foods. It is possibly safe when used as medicine at appropriate doses for a short period of time. There isn't enough reliable information to know whether fennel is safe when used long-term. Although rare, side effects might include stomach upset and seizures.

Safety note^[14]Caution

When applied to the skin: Fennel is possibly safe. Fennel can make skin extra sensitive to the sun and make it easier to get a sunburn. Wear sunblock if you are light-skinned. Special Precautions and Warnings When taken by mouth: Fennel is commonly consumed in foods. It is possibly safe when used as medicine at appropriate doses for a short period of time. There isn't enough reliable information to know whether fennel is safe when used long-term. Although rare, side effects might include stomach upset and seizures.

Safety note^[14]Info

When applied to the skin: Fennel is possibly safe. Fennel can make skin extra sensitive to the sun and make it easier to get a sunburn. Wear sunblock if you are light-skinned.

Safety note^[14]Caution

Pregnancy: Fennel is possibly unsafe to use when pregnant. Regularly using fennel has been linked to preterm birth.

Safety note^[14]Info

Breast-feeding: Fennel is possibly unsafe. There are some reports of breast-feeding infants with damage to their nervous systems after they were exposed to herbal tea containing fennel through breastmilk.

Safety note^[14]Info

Children: Fennel is possibly safe when used at appropriate doses for up to one week in young infants with colic.

Safety note^[14]Info

Allergy to celery, carrot or mugwort: Fennel might cause an allergic reaction in people who are sensitive to these plants.

Safety note^[14]Info

Bleeding disorders: Fennel might slow blood clotting. Taking fennel might increase the risk of bleeding or bruising in people with bleeding disorders.

Safety note^[14]Caution

Hormone-sensitive condition such as breast cancer, uterine cancer, ovarian cancer, endometriosis, or uterine fibroids: Fennel might act like estrogen. If you have any condition that might be made worse by estrogen, do not use fennel. (WebMD, n.d.b)

Safety note^{[14, 15]}Caution

Duke (2002) rates fennel as ++ and notes antispasmodic, carminative, and digestive activities at experimental levels (score 1). Its estrogenic activity is well-documented, and it is traditionally used as a lactagogue. Commission E approves fennel for dyspeptic complaints and upper respiratory tract catarrh. Dose: 1.5–7.5 g seed or equivalent daily. Duke cautions that fennel essential oil in large amounts may be neurotoxic (estrole content), and prolonged use of concentrated extracts should be avoided during pregnancy (Duke, 2002).

Safety note^[11]Caution

As a strong bitter it may aggravate hyperacidity; theoretical caution in peptic ulcer. Large amounts have shown effects on heart rhythm and blood pressure in studies, so avoid excessive intake.

Safety note^[11]Caution

Traditional use only; a cough or digestive complaint that persists needs medical assessment. Use in pregnancy and breastfeeding is not recommended.

External Ids

Gbif: 3034922

Wikidata: Q43511

Gbif: 2927069

Wikidata: Q157631

Botanical Description

Aromatic, robust perennial (often grown as an annual/biennial) with a smooth, waxy, blue-green, hollow stem and finely divided, thread-fine, feathery leaves. Small yellow flowers are borne in large flat compound umbels in summer, ripening into ridged, strongly aniseed-scented seeds.^[3]

Height: 1-2 m

Habit: Aromatic, robust perennial herb (often grown as annual/biennial)

Leaves: Finely divided into thread-fine, hair-like, feathery segments

Flowers: Small yellow flowers in large flat compound umbels

Stem: Smooth, waxy, blue-green, hollow, unspotted

Root: Thick taproot, swollen and bulb-like in the Florence fennel variety

Fruit: Ridged, aromatic, aniseed-scented seed (mericarp)

Flowering Period: July-October

Perennial herb, 20-60 cm tall, with square, densely white-woolly (tomentose) stems characteristic of the mint family. Leaves are opposite, ovate-rounded, crinkled and coarsely toothed, grey-green and woolly beneath, with a strong bitter, slightly musky smell when crushed. Small white, two-lipped flowers are clustered in dense whorls (verticillasters) in the leaf axils up the stem. The fruit splits into four small nutlets typical of the Lamiaceae.^[11]

Height: 20-60 cm

Habit: Erect, bushy, white-woolly perennial herb

Leaves: Opposite, ovate-rounded, crinkled, coarsely toothed, woolly beneath

Flowers: Small, white, two-lipped, in dense axillary whorls (verticillasters)

Stem: Square, densely white-woolly (tomentose)

Root: Fibrous perennial rootstock

Fruit: Four small nutlets (typical Lamiaceae schizocarp)

Flowering Period: June-October

Habitat

Native to the Mediterranean region; naturalised and widely cultivated worldwide in temperate and subtropical climates as a culinary herb, vegetable (Florence fennel) and spice crop.^[3]

Native to Europe, North Africa and temperate Asia and widely naturalised elsewhere, growing on dry, disturbed, sunny ground - roadsides, waste places, pastures and rocky or sandy soils.^{[8, 11]}

Harvesting

Leaves are picked fresh through the growing season; the seed is harvested in autumn once the umbels have browned and dried, then threshed; the swollen root/bulb of Florence fennel is harvested when mature, before flowering.^[3]

Parts: Leaf, Root, Seed

Season: Leaf through summer; seed in autumn; bulb before flowering

The flowering aerial parts are cut during the flowering season (summer), when bitter marrubiin content is highest, and dried promptly out of direct sunlight; harvest site and season measurably affect the marrubiin and antioxidant content of the dried herb.^{[8, 11]}

Parts: Aerial parts

Season: Summer, during flowering

Traditional Uses

Fennel seed has an ancient Mediterranean and Asian tradition as a carminative digestive remedy for indigestion, bloating and colic (including infant colic, historically), a mild expectorant for respiratory catarrh, and a traditional lactagogue and emmenagogue owing to its mild estrogen-like activity.^[3]

White horehound has a long European and Mediterranean folk-medicine history as a bitter expectorant for coughs, bronchitis and catarrh, and as a digestive bitter for poor appetite and dyspepsia. It is one of the classic ingredients of traditional cough syrups and horehound candy. A modern critical review found reasonable, though not conclusive, scientific support for these traditional respiratory and digestive uses.^{[2, 11, 12]}

Preparations

Infusion (seed)^[3]

Crushed seed infused in hot water as the classic carminative digestive tea.

Standardised extract^[12]

Seed extract studied in randomised trials for primary dysmenorrhoea (menstrual pain).

Infusion^[11]

Dried aerial parts steeped in hot water as a bitter digestive and expectorant tea.

Decoction/syrup^[12]

A stronger decoction, traditionally sweetened into a syrup (or made into horehound candy), for cough and sore throat.

Dosage

Seed infusion^[13]

The EU herbal monograph on bitter fennel fruit gives, for adults and adolescents, 1.5 g of the herbal substance in 250 mL of boiling water (steeped 15 minutes) as an infusion three times daily, for a daily dose of 4.5 g. For children 4 to 12 years, 1.0 g in 100 mL three times daily (daily dose 3.0 g); use is not recommended under 4 years. Use should be short-term, and the monograph limits exposure because of the estragole content of the fruit. Educational reference only, not a prescription.

Infusion^{[11, 12]}

EMA/ESCOP herbal-monograph guidance suggests about 1.5-2 g of dried aerial parts per cup, as an infusion up to 3 times daily. Educational reference only, not a prescription.

References

REF-1641, REF-1642, REF-0537, REF-1643, REF-1644, REF-0605, REF-1645, REF-1646, REF-1656, REF-1657, REF-2586

REF-0920, REF-0921, REF-0922, REF-0923, REF-0924, REF-0925, REF-0926, REF-0927, REF-0928, REF-0929

Lookalikes Review

Outcome: has-lookalikes

Reviewed By: Omnia Sana (owner-authorized)

Reviewed Date: 2026-07-06

Outcome: none-known

Reviewed By: Omnia Sana (owner-authorized)

Reviewed Date: 2026-07-07

Dangerous Lookalikes

Safety note^{[16, 17, 18]}Fatal

Dangerous Plant: conium-maculatum

Confused Part: Feathery foliage, stems and seeds - the whole above-ground plant. Both are tall Apiaceae with finely divided leaves, white or greenish compound umbels and hollow jointed stems, so a forager reaching for aniseed 'wild fennel' can grasp poison hemlock instead.

Confusion Context: Fennel (Foeniculum vulgare) is explicitly named as an edible confused with poison hemlock: King County (Washington) states that poison hemlock can be confused with many edible members of the parsley family including fennel, chervil and anise. Conium maculatum contains the piperidine alkaloid coniine and kills by ascending flaccid paralysis and respiratory failure; ingestion mistaken for edible umbellifers has caused fatal and near-fatal poisonings, and it is the plant analysed as the likely agent in the death of Socrates (Dayan 2024).

Distinguishing Features: CRUSH-AND-SMELL (decisive): fennel smells strongly and pleasantly of anise/liquorice. Poison hemlock has a rank, musty, mouse-like smell with no anise note., Stem markings: fennel has a smooth, waxy, blue-green stem with NO purple. Poison hemlock's smooth hairless hollow stem is conspicuously spotted and streaked with red-purple, especially near the base., Leaf texture: fennel leaves are thread-fine, almost hair-like filaments. Poison hemlock leaves are broader, flat, fern-like segments with toothed edges.

Key Test: Crush a leaf or stem and smell it: sweet anise/liquorice = fennel; rank musty/mousy = poison hemlock. Confirm by checking the lower stem for red-purple blotching (present on hemlock, absent on fennel's clean blue-green waxy stem). If the anise smell is absent OR any purple stem-spotting is present, do not eat it. Very young hemlock may not yet show strong purple, so rely first on the smell.

Reviewed By: Omnia Sana (owner-authorized)

Reviewed Date: 2026-07-06

Safety note^{[19, 20, 21]}Dangerous

Dangerous Plant: aethusa-cynapium

Confused Part: Finely divided foliage and small white compound umbels. As a slender Apiaceae with dissected leaves and white umbels, fool's parsley falls into the same lacy white-flowered umbellifer pool a fennel forager must rule out.

Confusion Context: Aethusa cynapium (fool's parsley, dog poison, lesser hemlock) is a toxic umbellifer historically confused with edible parsley-family plants. It contains toxic alkaloids; documented effects include inflammation of the mouth and throat, abdominal pain, confusion, blurred vision and pupil dilation, and its genuine toxicity is confirmed experimentally (Teuscher et al. 1990). Direct fennel confusion is weaker than for hemlock because fool's-parsley leaves are flat and parsley-like rather than thread-fine, but it shares the fennel umbel gestalt and is dangerous, so it must be ruled out.

Distinguishing Features: BRACTEOLE 'beard' (in flower): below each secondary umbel, fool's parsley bears three to four long, narrow, downward-hanging strongly reflexed bracteoles forming a distinctive drooping beard. Fennel has no such conspicuous drooping bracteoles under its umbellets., Smell when crushed: fennel is sweetly aniseed/liquorice; fool's parsley gives off an acrid, foetid, mouse-like odour., Leaf form: fennel leaves are thread-fine hair-like filaments; fool's-parsley leaves are flatter, darker green and parsley-like, not thread-fine.

Key Test: Look under a secondary flower cluster for the three to four long, narrow, downward-drooping bracteoles (the beard) - diagnostic for fool's parsley and absent in fennel. Combine with crush-and-smell (sweet anise = fennel; acrid/foetid = fool's parsley). If a drooping bracteole beard is present or the smell is foetid, do not eat it.

Reviewed By: Omnia Sana (owner-authorized)

Reviewed Date: 2026-07-06

Not documented

References & Sources

Rafieian, F., Amani, R., Rezaei, A. and others (2023) 'Exploring fennel (Foeniculum vulgare): Composition, functional properties, potential health benefits, and safety', Critical Reviews in Food Science and Nutrition, 64(19), pp. 6924-6941. doi:10.1080/10408398.2023.2176817 Meta-analysis / review
https://doi.org/10.1080/10408398.2023.2176817
Khorshidi, M. and others (2021) 'Fennel (Foeniculum vulgare Miller) for the management of menopausal women's health: A systematic review and meta-analysis', Complementary Therapies in Clinical Practice, 43, pp. 101360. doi:10.1016/j.ctcp.2021.101360 Meta-analysis / review
https://doi.org/10.1016/j.ctcp.2021.101360
Badgujar, S.B. and Patel, V.V. and Bandivdekar, A.H (2014) 'Foeniculum vulgare Mill: a review of its botany, phytochemistry, pharmacology, contemporary application, and toxicology', BioMed Research International. doi:10.1155/2014/842674 Traditional / reference
https://doi.org/10.1155/2014/842674
Rasul, A. and others (2019) 'Foeniculum vulgare (Fennel) promotes functional recovery and ameliorates oxidative stress following a lesion to the sciatic nerve in mouse model', Journal of Food Biochemistry, 43(11), pp. e12983. doi:10.1111/jfbc.12983 Preclinical
https://doi.org/10.1111/jfbc.12983
Rasheed, N. and others (2019) 'The Fennel, Foeniculum vulgare incorporated diet shows anxiolytic potential: A pre-clinical study', Pakistan Journal of Pharmaceutical Sciences, 32(4), pp. 1791-1797. Preclinical
https://scholar.google.com/scholar?q=The%20Fennel%2C%20Foeniculum%20vulgare%20incorporated%20diet%20shows%20anxiolytic%20potential%3A%20A%20pre-clinical%20study
Xu, Y., Yang, Q. and Wang, X (2020) 'Efficacy of herbal medicine (cinnamon/fennel/ginger) for primary dysmenorrhea: a systematic review and meta-analysis of randomized controlled trials', Journal of International Medical Research, 48(6). doi:10.1177/0300060520936179 Meta-analysis / review
https://doi.org/10.1177/0300060520936179
Bae, J. and others (2022) 'Olfactory Stimulation by Fennel (Foeniculum vulgare Mill.) Essential Oil Improves Lipid Metabolism and Metabolic Disorders in High Fat-Induced Obese Rats', Nutrients, 14(4), pp. 741. doi:10.3390/nu14040741 Preclinical
https://doi.org/10.3390/nu14040741
Crescente, G. and others (2017) 'Fennel (Foeniculum vulgare Mill. subsp. piperitum) florets, a traditional culinary spice in Italy: evaluation of phenolics and volatiles in local populations, and comparison with the composition of other plant parts', Journal of the Science of Food and Agriculture, 98(5), pp. 1755-1765. doi:10.1002/jsfa.8426 Preclinical
https://doi.org/10.1002/jsfa.8426
Yakut, H.I., Koyuncu, E., Cakir, U., Tayman, C. and others (2020) 'Preventative and therapeutic effects of fennel (Foeniculum vulgare) seed extracts against necrotizing enterocolitis', Journal of Food Biochemistry, 44(8), pp. e13284. doi:10.1111/jfbc.13284 Preclinical
https://doi.org/10.1111/jfbc.13284
Kamali, F., Mojani-Qomi, M.S., Arbabi Bidgoli, S., Lavasani, Z. and Adineh, M (2025) 'Fennel (Foeniculum vulgare) oral capsules improve endometrial thickness in infertile women following clomiphene citrate treatment', European Journal of Obstetrics, Gynecology, and Reproductive Biology, 313, pp. 114638. doi:10.1016/j.ejogrb.2025.114638 Randomized trial
https://doi.org/10.1016/j.ejogrb.2025.114638
Pattanittum, P., Kunyanone, N., Brown, J., Sangkomkamhang, U.S., Barnes, J., Seyfoddin, V. and Marjoribanks, J (2016) 'Dietary supplements for dysmenorrhoea', Cochrane Database of Systematic Reviews, 3, pp. CD002124. doi:10.1002/14651858.CD002124.pub2 Meta-analysis / review
https://doi.org/10.1002/14651858.CD002124.pub2
Shahrahmani, H., Ghazanfarpour, M., Shahrahmani, N., Abdi, F., Sewell, R.D.E. and Rafieian-Kopaei, M (2021) 'Effect of fennel on primary dysmenorrhea: a systematic review and meta-analysis', Journal of Complementary & Integrative Medicine, 18(2), pp. 261--269. doi:10.1515/jcim-2019-0212 Meta-analysis / review
https://doi.org/10.1515/jcim-2019-0212
European Medicines Agency (HMPC) (2018) 'European Union herbal monograph on Foeniculum vulgare Miller subsp. vulgare var. vulgare, fructus, Revision 1'. Available at: https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-foeniculum-vulgare-miller-subsp-vulgare-var-vulgare-fructus-revision-1_en.pdf Traditional / reference
https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-foeniculum-vulgare-miller-subsp-vulgare-var-vulgare-fructus-revision-1_en.pdf
https://www.webmd.com/vitamins/ai/ingredientmono-311/fennel. Available at: https://www.webmd.com/vitamins/ai/ingredientmono-311/fennel Traditional / reference
https://www.webmd.com/vitamins/ai/ingredientmono-311/fennel
Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition
Dayan, A.D (2024) 'Death of Socrates: a likely case of poison hemlock (Conium maculatum) poisoning', Clinical Toxicology (Philadelphia, Pa.), 62(1), pp. 56-60. doi:10.1080/15563650.2024.2309328 Clinical study
https://doi.org/10.1080/15563650.2024.2309328
King County Noxious Weeds (2024) 'Poison hemlock (Conium maculatum) identification and control'. Available at: https://kingcounty.gov/en/dept/dnrp/nature-recreation/environment-ecology-conservation/noxious-weeds/identification-control/poison-hemlock Traditional / reference
https://kingcounty.gov/en/dept/dnrp/nature-recreation/environment-ecology-conservation/noxious-weeds/identification-control/poison-hemlock
Grow Forage Cook Ferment 'Poison Hemlock: How to Identify and Potential Look-alikes'. Available at: https://www.growforagecookferment.com/poison-hemlock/ Traditional / reference
https://www.growforagecookferment.com/poison-hemlock/
Teuscher, E. and Greger, H. and Adrian, V (1990) 'Toxicity of Aethusa cynapium L. (fool's parsley)', Pharmazie, 45(7), pp. 537-8. Available at: https://pubmed.ncbi.nlm.nih.gov/2236201/ Preclinical
https://pubmed.ncbi.nlm.nih.gov/2236201/
Minnesota Wildflowers (2024) 'Aethusa cynapium (Fool's Parsley)'. Available at: https://www.minnesotawildflowers.info/flower/fools-parsley Traditional / reference
https://www.minnesotawildflowers.info/flower/fools-parsley
Botanical Society of Britain and Ireland (Fermanagh Flora) 'Aethusa cynapium L., Fool's Parsley'. Available at: https://fermanagh.bsbi.org/aethusa-cynapium-l Traditional / reference
https://fermanagh.bsbi.org/aethusa-cynapium-l

Lazarova, M.I., Tsvetanova, E.R., Georgieva, A.P., Stefanova, M.O. and others (2024) 'Marrubium vulgare Extract Improves Spatial Working Memory and Oxidative Stress Damage in Scopolamine-Treated Rats', Journal of Alzheimer's Disease, 99(s1), pp. S157-S169. doi:10.3233/JAD-231011 Preclinical
https://doi.org/10.3233/JAD-231011
Rodriguez Villanueva, J. and Martin Esteban, J (2016) 'An Insight into a Blockbuster Phytomedicine; Marrubium vulgare L. Herb. More of a Myth than a Reality?', Phytotherapy Research, 30(10), pp. 1551-1558. doi:10.1002/ptr.5661 Traditional / reference
https://doi.org/10.1002/ptr.5661
Acimovic, M., Ivanovic, S., Simic, K., Pezo, L. and others (2021) 'Chemical Characterization of Marrubium vulgare Volatiles from Serbia', Plants (Basel), 10(3), pp. 600. doi:10.3390/plants10030600 Preclinical
https://doi.org/10.3390/plants10030600
Amri, B., Martino, E., Vitulo, F., Corana, F. and others (2017) 'Marrubium vulgare L. Leave Extract: Phytochemical Composition, Antioxidant and Wound Healing Properties', Molecules, 22(11), pp. 1851. doi:10.3390/molecules22111851 Preclinical
https://doi.org/10.3390/molecules22111851
Lazarova, M., Stefanova, M., Denev, P., Taseva, T. and others (2024) 'Neuroprotective Effect of Marrubium vulgare Extract in Scopolamine-Induced Cognitive Impairment in Rats: Behavioral and Biochemical Approaches', Biology (Basel), 13(6), pp. 426. doi:10.3390/biology13060426 Preclinical
https://doi.org/10.3390/biology13060426
Aitbaba, A., Kabdy, H., Baslam, A., Azraida, H. and others (2024) 'Chemical Investigation and Antinociceptive Activity Evaluation of Marrubium vulgare L. Aqueous Extract', Chemistry & Biodiversity, 21(5), pp. e202400228. doi:10.1002/cbdv.202400228 Preclinical
https://doi.org/10.1002/cbdv.202400228
Abidi, A., Dhaouafi, J., Brinsi, C., Tounsi, H. and Sebai, H (2022) 'Tunisian Horehound (Marrubium vulgare) Aqueous Extract Improves Treatment of Bleomycin-Induced Lung Fibrosis in Rat', Dose-Response, 20(3), pp. 15593258221119300. doi:10.1177/15593258221119300 Preclinical
https://doi.org/10.1177/15593258221119300
Rezgui, M., Basma, M., Neng, N., Nogueira, J.M. and others (2021) 'Evaluation of Marrubium vulgare Growing Wild in Tunisia for Its Potential as a Dietary Supplement', Foods, 10(11), pp. 2864. doi:10.3390/foods10112864 Preclinical
https://doi.org/10.3390/foods10112864
Gourich, A.A., Touijer, H., Drioiche, A., Asbabou, A. and others (2023) 'Insight into biological activities of chemically characterized extract from Marrubium vulgare L. in vitro, in vivo and in silico approaches', Frontiers in Chemistry, 11, pp. 1238346. doi:10.3389/fchem.2023.1238346 Preclinical
https://doi.org/10.3389/fchem.2023.1238346
Yousefi, K., Hamedeyazdan, S., Torbati, M. and Fathiazad, F (2016) 'Chromatographic Fingerprint Analysis of Marrubiin in Marrubium vulgare L. via HPTLC Technique', Advanced Pharmaceutical Bulletin, 6(1), pp. 131-136. doi:10.15171/apb.2016.019 Preclinical
https://doi.org/10.15171/apb.2016.019
European Medicines Agency (HMPC) (2013) 'European Union herbal monograph on Marrubium vulgare L., herba (Marrubii herba)'. Available at: https://www.ema.europa.eu/en/medicines/herbal/marrubii-herba Traditional / reference
https://www.ema.europa.eu/en/medicines/herbal/marrubii-herba
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Acimovic, M., Jeremic, K., Salaj, N., Gavaric, N., Kiprovski, B., Sikora, V. and Zeremski, T (2020) 'Marrubium vulgare L.: A Phytochemical and Pharmacological Overview', Molecules, 25(12). doi:10.3390/molecules25122898 Meta-analysis / review
https://doi.org/10.3390/molecules25122898
Yamaguchi, K., Liggett, J.L., Kim, N.C. and Baek, S.J (2006) 'Anti-proliferative effect of horehound leaf and wild cherry bark extracts on human colorectal cancer cells', Oncology Reports, 15(1), pp. 275-281. doi:10.3892/or.15.1.275 Preclinical
https://doi.org/10.3892/or.15.1.275

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