Oil of Oregano

Oil of oregano has a long history of use in botanical and traditional medicine, and the reasons for its enduring reputation have become considerably clearer through modern research. Designs for Health Oil of Oregano delivers 60 mg of high-quality oregano oil (Origanum vulgare, leaf) per softgel, standardised to provide 36 mg of carvacrol and thymol — the two primary phenolic compounds responsible for the herb's well-characterised biological activity. The extract is sourced from a 60–75% carvacrol oregano oil, representing a meaningfully high standardisation level compared with many commercially available oregano preparations.

To address a practical formulation challenge — concentrated essential oils can be irritating to gastrointestinal mucosal tissue when delivered undiluted — the oregano oil in this product is emulsified with olive oil as a carrier. This emulsification process increases the surface area of the essential oil particles, supports more even distribution through the gastrointestinal tract, and improves tolerability without compromising the potency of the active constituents. The result is a compact, easy-to-swallow softgel that is considerably more convenient and gentler than bulk liquid oregano oil preparations.

Oregano Oil — Origanum vulgare (leaf) 60 mg per softgel; standardised to 36 mg carvacrol and thymol

The bioactivity of oregano oil is primarily attributed to two phenolic monoterpenoids present in the volatile fraction of the plant: carvacrol (5-isopropyl-2-methylphenol) and thymol (2-isopropyl-5-methylphenol). These structurally related compounds are the most extensively researched constituents of Origanum vulgare oil and account for the majority of its documented properties.

Carvacrol is the dominant active compound in high-grade oregano oil and is the subject of a substantial body of in vitro, preclinical, and clinical research. Its primary mechanism of action involves disruption of microbial cell membrane integrity: carvacrol is lipophilic and integrates into phospholipid bilayers, increasing membrane permeability, dissipating proton motive force, and inhibiting ATP synthesis in susceptible micro-organisms. This mechanism underlies carvacrol's well-documented capacity to support a healthy balance of micro-organisms within the gastrointestinal environment. Carvacrol has also been shown to modulate nuclear factor-kappa B (NF-κB) signalling, a key pathway in the regulation of inflammatory gene expression, supporting a healthy inflammatory response. Additionally, carvacrol acts as a modulator of transient receptor potential (TRP) channels — specifically TRPV3 and TRPA1 — which may contribute to its effects in gastrointestinal tissues.

Thymol shares structural similarity with carvacrol and contributes complementary activity, including antioxidant properties and additional membrane-active effects. The two compounds act synergistically, and their combined standardised delivery ensures consistent, reproducible activity across each batch.

Rosmarinic acid, a hydroxycinnamic acid derivative present in Origanum vulgare, contributes further antioxidant activity through direct free radical scavenging and inhibition of lipid peroxidation. It has been shown to support healthy mast cell responses and modulate eicosanoid pathways, offering additional support for a healthy inflammatory response.

Collectively, the phenolic profile of high-carvacrol oregano oil supports: maintenance of a healthy gastrointestinal microbial environment; antioxidant protection against reactive oxygen species; and modulation of key inflammatory signalling pathways. The gastrointestinal tract is the primary site of action for an orally delivered, olive oil-emulsified preparation of this type.

Olive Oil (carrier)

Beyond its role as an emulsification carrier, olive oil contributes its own nutritional attributes to the formulation. Rich in oleic acid (omega-9) and polyphenolic antioxidants, including oleuropein and hydroxytyrosol, extra virgin olive oil supports gastrointestinal mucosal integrity and provides a mild lipid matrix that facilitates absorption of the lipophilic active compounds.

Supplement Facts

Other Ingredients: Olive oil, bovine gelatin (softgel shell), vegetable glycerine, purified water.

Directions for Use

Take 1 softgel per day with a meal, or as directed by your healthcare practitioner.

For best results, take with food to further support gastrointestinal tolerability.

Allergen Information

Free from: Gluten, dairy, soy, GMO ingredients.

Contains: Bovine-derived gelatin (softgel shell). Not suitable for vegetarians or vegans.

Manufactured in a GMP-registered facility in the USA.

Cautions and Contraindications

Pregnancy and lactation: Safety of high-dose concentrated oregano oil has not been established in pregnancy. Oregano oil has traditional use as an emmenagogue at high doses. Use during pregnancy or lactation is not recommended except under the direct supervision of a qualified healthcare practitioner.

Drug interactions: Carvacrol has demonstrated inhibitory effects on cytochrome P450 enzymes, including CYP3A4 and CYP2C9, in preclinical research. Caution is warranted in individuals taking medications with a narrow therapeutic index that are metabolised via these pathways, including warfarin, cyclosporin, and certain anticonvulsants. Consult a healthcare practitioner before use if taking prescription medications.

Anticoagulant/antiplatelet medications: Oregano oil may have mild antiplatelet activity; caution in individuals on anticoagulant or antiplatelet therapy.

Gastrointestinal sensitivity: Although the olive oil emulsification in this product substantially reduces the risk of mucosal irritation compared with neat oregano oil, individuals with known gastrointestinal sensitivity, active ulceration, or inflammatory bowel conditions should consult a healthcare practitioner before use.

Iron absorption: High phenolic intake may transiently reduce non-haem iron absorption when taken concurrently with iron-containing foods or supplements. Take oregano oil preparations at a separate time from iron supplementation if relevant.

Allergy: Individuals with known sensitivity to plants in the Lamiaceae family (including basil, lavender, mint, rosemary, sage, and thyme) should exercise caution.

If you have a medical condition or are taking prescription medication, consult your healthcare practitioner before use. Keep out of reach of children. Do not use if the seal is broken.

This product is a natural health product intended to support general health and well-being. It is not intended to diagnose, treat, cure, or prevent any disease or medical condition. Always read the label and take as directed.