--- title: "Thyme Oil: Benefits, Uses & Side Effects | Herbadex" description: "Traditionally used as an expectorant for cough with a cold, rubbed on the chest or added to a bath. Use only ready-made products with a set dose." language: en url: https://herbadex.com/en/herb/thyme-oil/ source: Herbadex (https://herbadex.com) --- [Essential Oil](https://herbadex.com/en/form/essential-oil/) # Thyme Oil Thymus vulgaris T Traditional use Traditionally used as an expectorant for cough with a cold, rubbed on the chest or added to a bath. Use only ready-made products with a set dose. [Respiratory, Throat & Mouth](https://herbadex.com/en/for/respiratory/) Image: Herbadex Botanik Stüdyosu · Özel Üretim Pregnancy **⚠ Avoid** Breastfeeding **⚠ Avoid** Children **⚠ Avoid** Drug interactions **No recorded interactions** ## At a glance The EMA assesses thyme oil from Thymus vulgaris and T. zygis as a traditional herbal product for two uses: by mouth as an expectorant for cough with a cold, and rubbed on the chest or used in a bath for cough and cold symptoms. In Turkey, oil sold as "kekik yağı" is often oregano (Origanum) oil, which this assessment does not cover. **Parts used:** essential-oil **Key constituents:** Carvacrol Updated: October 15, 2026 ✓ This herb record is backed by official European Medicines Agency (EMA HMPC) herbal monographs. ## What is it used for? - T Traditional use Traditionally used as an expectorant for cough associated with a cold. \[1\] - T Traditional use Traditionally rubbed on the chest or used as a bath additive for symptoms of coughs and colds. \[1\] ## How is it used? ### Oral oil Only as a dosed ready-made product: 0.2–0.25 ml of oil per dose. Max 1.25 ml a day. **Amount:** 3–5 times daily **Duration limit:** 1 week \[1\] ### Topical Rub a cream or ointment with up to 10% oil on the chest and back. **Amount:** Up to 3 times daily **Duration limit:** 1 week \[1\] ### Topical Bath additive: 0.007–0.025 g of oil per litre; bath at 35–38 °C for 10–20 minutes. **Amount:** Daily or every other day **Duration limit:** 1 week \[1\] ## Safety & interactions Minimum age: 18 years - Do not apply to the face, especially around the nose, of babies under 2: risk of throat spasm. - Oral and skin use not recommended under 18; bath use not recommended under 3. - No full hot baths with open wounds, acute skin disease, high fever, severe infection, serious circulation problems or heart failure; take care with high blood pressure. - See a doctor if shortness of breath, fever or pus-like phlegm occurs, or if symptoms last over 1 week. - Do not swallow undiluted essential oil; keep out of reach of children. - Not recommended in pregnancy or breastfeeding because safety has not been shown. \[1\] ### Drug interactions No recorded interactions ### Side effects - Allergic reactions - Skin irritation when applied to the skin #### ⚕ When to see a doctor - If high fever, shortness of breath or purulent/bloody phlegm develops - If symptoms do not improve within 1–2 weeks or worsen - If severe abdominal pain, jaundice, rash or allergic reaction occurs ## Did you know? Thyme oil baths can be used from age 3 with reduced doses; oral use is for over-18s only. \[1\] ## Frequently asked questions Can thyme oil be swallowed? Not as such. The EMA assesses oral use only for dosed ready-made products and over 18. Is the "kekik yağı" sold in Turkey this oil? Often not. It is usually oregano (Origanum) oil; this assessment covers Thymus vulgaris and T. zygis oil. Can children use thyme oil? As a bath additive from age 3 with an age-appropriate dose; never on the face of children under 2. ## Sources 1. [European Union herbal monograph on Thymus vulgaris L. and Thymus zygis L., aetheroleum – Revision 1](https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-thymus-vulgaris-l-thymus-zygis-l-aetheroleum-revision-1_en.pdf) EMA HMPC · 2020 ### Cite This Page Thyme Oil (Thymus vulgaris). Herbadex — Doğal Şifa Rehberi (2026). https://herbadex.com/en/herb/thyme-oil/ ## Related guides and comparisons - [Thyme Tea or Thyme Essential Oil?](https://herbadex.com/en/compare/thyme-vs-thyme-oil/) ## Related plant and preparations [Thyme](https://herbadex.com/en/herb/thyme/) ## On this page At a glance What is it used for? How is it used? Safety & interactions Did you know? Frequently asked questions Sources Related herbs ## Related herbs ### [Peppermint Oil](https://herbadex.com/en/herb/peppermint-oil/) A Strong clinical evidence Mentha × piperita Gastro-resistant peppermint oil capsules may ease IBS cramps, wind and pain; oil rubbed on the forehead may ease mild tension headache. [Digestion](https://herbadex.com/en/for/digestion/) [Joints, Bones & Pain](https://herbadex.com/en/for/joints-pain/) +1 [Essential Oil](https://herbadex.com/en/form/essential-oil/) ### [Ivy Leaf](https://herbadex.com/en/herb/ivy-leaf/) A Strong clinical evidence Hedera helix Syrups and drops with standardised ivy leaf extract are used as an expectorant for chesty cough. The leaf itself is not made into tea. [Respiratory, Throat & Mouth](https://herbadex.com/en/for/respiratory/) [Syrup & Paste](https://herbadex.com/en/form/syrup-paste/) ### [Black Seed](https://herbadex.com/en/herb/black-seed/) B Limited clinical evidence Nigella sativa A spice seed for which small studies saw modest falls in blood sugar, cholesterol and blood pressure. Kitchen amounts are safe. [Metabolism, Weight & Blood Sugar](https://herbadex.com/en/for/metabolism/) [Heart & Circulation](https://herbadex.com/en/for/heart-circulation/) +1 [Seed](https://herbadex.com/en/form/seed/) ### [Black Seed Oil](https://herbadex.com/en/herb/black-seed-oil/) B Limited clinical evidence Nigella sativa Oil pressed from black seed. Small studies saw modest falls in blood sugar and cholesterol and limited benefit in asthma. [Metabolism, Weight & Blood Sugar](https://herbadex.com/en/for/metabolism/) [Skin & Hair](https://herbadex.com/en/for/skin-hair/) +1 [Carrier Oil](https://herbadex.com/en/form/carrier-oil/) ### [Frankincense (Olibanum)](https://herbadex.com/en/herb/frankincense/) B Limited clinical evidence Boswellia sacra / Boswellia serrata The resin of the Boswellia tree. Standardised extracts are backed by limited clinical studies for pain and mobility in knee osteoarthritis. [Joints, Bones & Pain](https://herbadex.com/en/for/joints-pain/) [Respiratory, Throat & Mouth](https://herbadex.com/en/for/respiratory/) [Resin & Gum](https://herbadex.com/en/form/resin-gum/) ### [Anise](https://herbadex.com/en/herb/anise/) T Traditional use Pimpinella anisum Aniseed tea is traditionally used for mild digestive complaints such as bloating and wind, and for cough that comes with a cold. [Digestion](https://herbadex.com/en/for/digestion/) [Respiratory, Throat & Mouth](https://herbadex.com/en/for/respiratory/) [Seed](https://herbadex.com/en/form/seed/) ## Other herbs in the same preparation form (Essential Oil) [Essential Oil →](https://herbadex.com/en/form/essential-oil/) ### [Rose Oil](https://herbadex.com/en/herb/rose-oil/) B Limited clinical evidence Rosa damascena Distilled from Damask roses, one of the world's most precious essential oils. Small aromatherapy studies suggest it may help ease anxiety. [Sleep, Stress & Mood](https://herbadex.com/en/for/sleep-stress/) [Skin & Hair](https://herbadex.com/en/for/skin-hair/) [Essential Oil](https://herbadex.com/en/form/essential-oil/) ### [Eucalyptus Oil](https://herbadex.com/en/herb/eucalyptus-oil/) T Traditional use Eucalyptus globulus Eucalyptus oil is used as steam or a chest rub for cough with a cold and on the skin for localised muscle pain; never under age 2. [Respiratory, Throat & Mouth](https://herbadex.com/en/for/respiratory/) [Joints, Bones & Pain](https://herbadex.com/en/for/joints-pain/) [Essential Oil](https://herbadex.com/en/form/essential-oil/) ### [Lavender Oil](https://herbadex.com/en/herb/lavender-oil/) T Traditional use Lavandula angustifolia Lavender oil is traditionally used as a bath additive to relieve mild symptoms of stress and exhaustion and to aid sleep. [Sleep, Stress & Mood](https://herbadex.com/en/for/sleep-stress/) [Essential Oil](https://herbadex.com/en/form/essential-oil/) ### [Tea Tree Oil](https://herbadex.com/en/herb/tea-tree-oil/) T Traditional use Melaleuca alternifolia Tea tree oil is used on the skin only for small wounds, insect bites, small spots and mild athlete's foot itching; it must not be swallowed. [Skin & Hair](https://herbadex.com/en/for/skin-hair/) [Respiratory, Throat & Mouth](https://herbadex.com/en/for/respiratory/) [Essential Oil](https://herbadex.com/en/form/essential-oil/) This page is for information only and is not medical advice. If you take medication, are pregnant, or have a health condition, talk to your doctor or pharmacist before use.