Plant Profile

Thyme

Thymus vulgaris
Family: Lamiaceae  ·  Parts used: Aerial parts (herb) and essential oil  ·  Also known as: Common thyme, Garden thyme

The complete database record: 2 documented constituents, 5 pharmacological actions, 9 traditional / indicated uses, with 14 cited sources.

Botanical Description

Low, woody-based aromatic perennial subshrub with small, narrow, grey-green leaves and small, pale pink to lilac, two-lipped flowers borne in whorled clusters along the upper stems.[11]

Height: 15-40 cm
Habit: Low, woody-based, bushy aromatic perennial subshrub
Leaves: Small, narrow, grey-green, strongly aromatic
Flowers: Small, pale pink to lilac, two-lipped, in whorled clusters along upper stems
Stem: Woody at the base, upright to sprawling, finely hairy
Root: Woody taproot
Fruit: Small nutlet
Flowering Period: May-August

Habitat & Distribution

Grows on dry, sunny, rocky, well-drained soils; native to the western Mediterranean and widely cultivated as a culinary and medicinal herb worldwide.[11]

Harvesting

The flowering aerial parts are cut just as flowering begins, when essential oil content is highest, and dried in a warm, shaded, airy place; essential oil is obtained by steam distillation of the fresh or dried herb.[11]

Parts: Aerial parts (herb) and essential oil
Season: Late spring to summer, at the start of flowering

Key Constituents

Essential oil rich in thymol and carvacrol[2, 6, 9, 11, 12]

Phenolic monoterpenes responsible for the antimicrobial and expectorant actions.

Essential (volatile) oilTerpenes / terpenoidsCarvacrolThymol
Flavonoids and rosmarinic acid[11]

Antioxidant and anti-inflammatory constituents.

Rosmarinic acidFlavonoids

Pharmacological Actions

Anticancer (preclinical)[7]
Antimicrobial[1, 2, 3, 4, 5, 7, 8, 10, 11, 12]

Antimicrobial (thymol and carvacrol) - supports respiratory infection; Sore throat relief (antiseptic gargle)

Antispasmodic[3, 11]

Antitussive and antispasmodic (eases bronchial spasm and coughing)

Antitussive (cough suppressant)[11]

Antitussive and antispasmodic (eases bronchial spasm and coughing)

Expectorant[11, 14]

Expectorant for productive (chesty) cough associated with cold and bronchitis - a fixed thyme-ivy extract combination outperformed placebo in acute bronchitis (faster, greater reduction in coughing fits)

Traditional & Indicated Uses

Bronchitis[11, 14]Moderate · 5/10

Expectorant for productive (chesty) cough associated with cold and bronchitis - a fixed thyme-ivy extract combination outperformed placebo in acute bronchitis (faster, greater reduction in coughing fits)

Evidence: 5
Label: Bronchitis

more plants for bronchitis →detailed sources →

Cancer (anticancer research)[7]Preliminary · 2/10

inferred from anticancer action

Evidence: 2
Label: Cancer (anticancer research)

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Cold & flu[11, 14]Moderate · 5/10

Expectorant for productive (chesty) cough associated with cold and bronchitis - a fixed thyme-ivy extract combination outperformed placebo in acute bronchitis (faster, greater reduction in coughing fits)

Evidence: 5
Label: Cold & flu

more plants for cold & flu →detailed sources →

Cough[11, 14]Moderate · 5/10

Expectorant for productive (chesty) cough associated with cold and bronchitis - a fixed thyme-ivy extract combination outperformed placebo in acute bronchitis (faster, greater reduction in coughing fits)

Evidence: 5
Label: Cough

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Infection (general)[12]Preliminary · 2/10

Antimicrobial (thymol and carvacrol) - supports respiratory infection

Mechanistic Exclude Ids: REF-0519, REF-1310
Evidence: 2
Label: Infection (general)

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Menstrual cramps

inferred from antispasmodic action

Mechanistic Exclude Ids: REF-0519
Evidence: 1
Label: Menstrual cramps

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Muscle spasm

inferred from antispasmodic action

Mechanistic Exclude Ids: REF-0519
Evidence: 1
Label: Muscle spasm

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Respiratory support[11, 14]Moderate · 5/10

inferred from expectorant action

Evidence: 5
Label: Respiratory support

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Wounds[12]Preliminary · 2/10

inferred from antimicrobial action

Mechanistic Exclude Ids: REF-0519, REF-1310, REF-1312
Evidence: 2
Label: Wounds

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Traditional Use & History

Thyme has a long Mediterranean and European tradition as an antimicrobial and expectorant remedy for coughs, bronchitis and sore throat, formalised in EU herbal monograph recognition, with a fixed thyme-ivy extract combination shown superior to placebo for acute bronchitis with productive cough in clinical trial.[11, 14]

Preparations

Infusion[11]

Dried herb infused in hot water as a traditional cough, cold and digestive tea.

Gargle[11]

Infusion used as a gargle for sore throat, drawing on the antiseptic essential oil constituents.

Standardized fluid extract (thyme-ivy combination)[14]

Standardized fluid extract, often combined with ivy leaf, the form studied in clinical trials for acute bronchitis.

Dosage

Infusion[11]

The EU herbal monograph suggests around 1-2 g of dried herb per cup, up to three times daily. Educational reference only, not a prescription; do not take the essential oil undiluted internally.

Safety, Cautions & Contraindications

Safety note[12]Caution

Culinary amounts are safe. Thyme essential oil is a strong irritant - dilute well before any topical use and do not take the undiluted oil internally.

Safety note[11]Caution

A cough that persists beyond about a week, or with fever or breathlessness, needs medical assessment. Avoid medicinal/oil doses in pregnancy; allergy is possible in people sensitive to the mint family (Lamiaceae).

Harvest Readiness

[13]

Part: aerial-parts
Signals: Cut the aerial parts (herb) just before the flowers open, in early to late summer, when the aromatic oil is highest.
Basis: traditional
Source Quote: If the leaves are to be dried, the plants should be harvested in early and late summer just before the flowers open and the leaves should be dried quickly.
Species Confirmed: 1
Notes: PFAF (REF-3351); the aerial parts are cut just before the flowers open (early to late summer), when the oil is highest. Single lineage -> provisional.

External Identifiers

References & Sources

  1. Sakkas, H. and Papadopoulou, C (2017) 'Antimicrobial Activity of Basil, Oregano, and Thyme Essential Oils', Journal of Microbiology and Biotechnology, 27(3), pp. 429-438. doi:10.4014/jmb.1608.08024 Preclinical
    https://doi.org/10.4014/jmb.1608.08024
  2. Salehi, B., Mishra, A.P., Shukla, I., Sharifi-Rad, M. and others (2018) 'Thymol, thyme, and other plant sources: Health and potential uses', Phytotherapy Research, 32(9), pp. 1688-1706. doi:10.1002/ptr.6109 Meta-analysis / review
    https://doi.org/10.1002/ptr.6109
  3. Kowalczyk, A., Przychodna, M., Sopata, S., Bodalska, A. and others (2020) 'Thymol and Thyme Essential Oil-New Insights into Selected Therapeutic Applications', Molecules, 25(18), pp. 4125. doi:10.3390/molecules25184125 Meta-analysis / review
    https://doi.org/10.3390/molecules25184125
  4. Wirtu, S.F., Ramaswamy, K., Maitra, R., Chopra, S. and others (2024) 'Isolation, characterization and antimicrobial activity study of Thymus vulgaris', Scientific Reports, 14(1), pp. 21573. doi:10.1038/s41598-024-71012-2 Preclinical
    https://doi.org/10.1038/s41598-024-71012-2
  5. Diniz, A.F., Santos, B., Nobrega, L.M.M.O., Santos, V.R.L. and others (2023) 'Antibacterial activity of Thymus vulgaris (thyme) essential oil against strains of Pseudomonas aeruginosa, Klebsiella pneumoniae and Staphylococcus saprophyticus isolated from meat product', Brazilian Journal of Biology, 83, pp. e275306. doi:10.1590/1519-6984.275306 Preclinical
    https://doi.org/10.1590/1519-6984.275306
  6. Tardugno, R., Serio, A., Purgatorio, C., Savini, V. and others (2022) 'Thymus vulgaris L. essential oils from Emilia Romagna Apennines (Italy): phytochemical composition and antimicrobial activity on food-borne pathogens', Natural Product Research, 36(3), pp. 837-842. doi:10.1080/14786419.2020.1798666 Preclinical
    https://doi.org/10.1080/14786419.2020.1798666
  7. Doghish, A.S., Shehabeldine, A.M., El-Mahdy, H.A., Hassanin, M.M.H. and others (2023) 'Thymus vulgaris Oil Nanoemulsion: Synthesis, Characterization, Antimicrobial and Anticancer Activities', Molecules, 28(19), pp. 6910. doi:10.3390/molecules28196910 Preclinical
    https://doi.org/10.3390/molecules28196910
  8. Oliva, M.L., Carezzano, M.E., Giuliano, M., Daghero, J. and others (2015) 'Antimicrobial activity of essential oils of Thymus vulgaris and Origanum vulgare on phytopathogenic strains isolated from soybean', Plant Biology, 17(3), pp. 758-765. doi:10.1111/plb.12282 Preclinical
    https://doi.org/10.1111/plb.12282
  9. Vetvicka, V. and Vetvickova, J (2016) 'Essential Oils from Thyme (Thymus vulgaris): Chemical Composition and Biological Effects in Mouse Model', Journal of Medicinal Food, 19(12), pp. 1180-1187. doi:10.1089/jmf.2016.0029 Preclinical
    https://doi.org/10.1089/jmf.2016.0029
  10. Sikic Pogacar, M., Klancnik, A., Bucar, F., Langerholc, T. and others (2016) 'Anti-adhesion activity of thyme (Thymus vulgaris L.) extract, thyme post-distillation waste, and olive leaf extract against Campylobacter jejuni on polystyrene and intestine epithelial cells', Journal of the Science of Food and Agriculture, 96(8), pp. 2723-2730. doi:10.1002/jsfa.7391 Preclinical
    https://doi.org/10.1002/jsfa.7391
  11. European Medicines Agency (HMPC) (n.d.) 'European Union herbal monograph on Thymus vulgaris L. and Thymus zygis L., herba (Thymi herba)'. Available at: https://www.ema.europa.eu/en/medicines/herbal/thymi-herba Traditional / reference
    https://www.ema.europa.eu/en/medicines/herbal/thymi-herba
  12. Sharifi-Rad, M., Varoni, E.M., Iriti, M., Martorell, M., Setzer, W.N., del Mar Contreras, M., Salehi, B., Soltani-Nejad, A., Rajabi, S., Tajbakhsh, M. and Sharifi-Rad, J (2018) 'Carvacrol and human health: A comprehensive review', Phytotherapy Research. doi:10.1002/ptr.6103 Preclinical
    https://doi.org/10.1002/ptr.6103
  13. Plants For A Future 'Thymus vulgaris (Garden Thyme, Common Thyme)'. Available at: https://pfaf.org/user/Plant.aspx?LatinName=Thymus+vulgaris Traditional / reference
    https://pfaf.org/user/Plant.aspx?LatinName=Thymus+vulgaris
  14. Kemmerich, B., Eberhardt, R. and Stammer, H (2006) 'Efficacy and tolerability of a fluid extract combination of thyme herb and ivy leaves and matched placebo in adults suffering from acute bronchitis with productive cough', Arzneimittel-Forschung, 56(9), pp. 652--660. doi:10.1055/s-0031-1296767 Randomized trial
    https://doi.org/10.1055/s-0031-1296767

This fact sheet is generated automatically from the Omnia Sana plant database and reflects its latest synced data. It is provided for educational purposes only and is not medical advice. How this site is built.

Selected studies & references

Educational use only. This profile summarises traditional and scientific sources for reference. It is not medical advice and not a substitute for a qualified practitioner. Some plants carry safety cautions and drug interactions - always check before use.
This profile is assembled automatically from the Omnia Sana plant database, which we curate by hand. How this site is built.
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