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Open Source Apothecary At Home

Open Source Apothecary At Home / The herbs

Thyme

A kitchen herb with a real antimicrobial reputation — and the honest version of that reputation. — Thymus vulgaris

remedy
Thyme Thymus vulgaris — hand-drawn plate, stylised. Not for identification — use a field guide and verify with a second source before eating any wild plant.

Thyme (Thymus vulgaris) is thymol-rich, and thymol is a genuine antimicrobial compound — which is exactly why the honest version of thyme's reputation needs care.

What is solid. Thyme's essential oil has well-documented antimicrobial activity in vitro, and this is not folklore: thymol and carvacrol disrupt bacterial membranes. Thymol is used as a disinfectant in veterinary and oral care products. Thyme is also a traditional expectorant, and combination herbal cough preparations containing thyme have been tested in acute bronchitis with some benefit — though usually as part of a multi-herb product, so the effect cannot be attributed to thyme alone.

What is not. In-vitro antimicrobial activity is not the same as treating a human infection. A chest infection, a urinary infection or a wound that has become cellulitis needs the appropriate antibiotic, and a thyme preparation is a delay. This is the single most important sentence on this page.

The thyme syrup or tea for cough is a reasonable comfort measure with weak, combination-based evidence. Honey alone has better evidence for cough than thyme does.

Growing it is where thyme genuinely shines. It is a Mediterranean plant that needs drainage, sun and poor soil, and it is at its most aromatic when it is slightly stressed. Rich, wet soil produces a lush plant with almost no smell — which is the general principle of aromatic-herb cultivation in a single example.

What the studies found

Randomized Controlled Trial2018Complementary therapies in medicine

The effects of Zataria multiflora Boiss. (Shirazi thyme) on nonalcoholic fatty liver disease and insulin resistance: A randomized double-blind placebo-controlled clinical trial.

ZM supplementation with daily dose of 1400 mg for 12 weeks improved insulin resistance in patients with NAFLD.
PubMed 30477827 ↗
Randomized Controlled Trial2016Meat science

Effect of essential oils on meat and fat qualities of crossbred young bulls finished in feedlots.

A dose of 3.5g/animal/day could be recommended in feedlot animals, but greater doses could have a pro-oxidant effect.
PubMed 27388818 ↗
Randomized Controlled Trial2015Poultry science

Effect of plant extracts derived from thyme on male broiler performance.

The effect of dietary thyme-oil extract (TOE) supplementation on immune functions of broilers were assessed by feeding graded levels (50, 100, 200, or 400 ppm) of TOE to male broiler chicks during a 42-d feeding trial compared with negative- or positive-control diets.
PubMed 26362978 ↗
Randomized Controlled Trial2015Poultry science

Antioxidative effect of ginseng stem-leaf saponins on oxidative stress induced by cyclophosphamide in chickens.

Therefore, ginseng stem-leaf saponins could be a promising agent against oxidative stress in the poultry industry.
PubMed 25713395 ↗
Randomized Controlled Trial2014Journal of dairy science

Short communication: an in vitro assessment of the antibacterial activity of plant-derived oils.

Further evaluation of physiological effects of thyme oil in various preparations on mammary tissue is recommended to determine potential suitability for mastitis therapy.
PubMed 25022682 ↗

Growing it

| | | |---|---| | Life | Perennial, woody-based (short-lived: 3-5 years) | | Propagation | Seed (variable), cuttings or division for named varieties | | Light | Full sun — it needs it | | Soil | Poor, gritty, sharply drained. Rich soil kills it. | | Spacing | 20-30 cm | | Harvest | Leaf/stem before flowering; ongoing | | Dry | Shade, ambient — highly volatile | | Winter | Resents wet cold more than frost; keep it out of wet mulch |

Grow it in a raised bed, a gravel bed, or a pot with grit. Never let it sit in wet clay. Replace plants every few years as they go woody; take cuttings from the best plant to keep the line going.

There are distinct chemotypes of thyme — some thymol-dominant, some with other profiles — so a named variety is more predictable than seed.

Preparation

Tea — 1 teaspoon dried leaf per cup, covered, 5-10 minutes. The standard expectorant tea, better in a blend than alone.

Syrup — a strong thyme infusion combined with honey. A comfort measure for cough; honey is doing much of the work.

Infused oil — thyme in oil, used externally, or the essential oil diluted for topical antiseptic use.

In the kitchen — the correct answer for most of one's thyme. Frequent culinary use is the safest and most reliable way to get whatever thyme offers.

Steam inhalation — thyme in hot water, inhaled carefully. Do not scald.

Cautions and interactions

When this is not a self-care problem — get help

Known interactions

Related

Sources

  1. The effects of Zataria multiflora Boiss. (Shirazi thyme) on nonalcoholic fatty liver disease and insulin resistance: A randomized double-blind placebo-controlled clinical trial. Complementary therapies in medicine 2018; doi:10.1016/j.ctim.2018.09.010 PubMed 30477827
  2. Effect of essential oils on meat and fat qualities of crossbred young bulls finished in feedlots. Meat science 2016; doi:10.1016/j.meatsci.2016.06.017 PubMed 27388818
  3. Effect of plant extracts derived from thyme on male broiler performance. Poultry science 2015; doi:10.3382/ps/pev220 PubMed 26362978
  4. Antioxidative effect of ginseng stem-leaf saponins on oxidative stress induced by cyclophosphamide in chickens. Poultry science 2015; doi:10.3382/ps/pev055 PubMed 25713395
  5. Short communication: an in vitro assessment of the antibacterial activity of plant-derived oils. Journal of dairy science 2014; doi:10.3168/jds.2013-7806 PubMed 25022682