Oregano Oil
herbs
Oregano oil is a concentrated extract from the oregano plant (Origanum vulgare) containing potent compounds like carvacrol and thymol with antimicrobial and antioxidant properties. It has been traditionally used for respiratory support, digestive health, and immune function. Modern research supports several traditional applications, though clinical evidence in humans remains limited.
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Benefits
Dosage
Typical Dose
150-300mg of oregano oil extract daily, or 2-3 drops of essential oil diluted
Upper Limit
600-750mg daily in divided doses
Timing
With meals to improve tolerance and absorption
Forms & Bioavailability
Essential Oil (concentrated)
High when properly diluted; must never be taken undiluted
Liquid Extract (standardised)
High; typically standardised to 50-80% carvacrol
Capsule/Tablet (dried or extract)
Moderate to high; delayed release capsules improve tolerability
Side Effects
Interactions
Research Summary
In vitro and animal studies demonstrate oregano oil's antimicrobial efficacy against bacteria, fungi, and viruses, with carvacrol identified as a key active compound. Human clinical trials remain limited, though preliminary evidence supports benefits for respiratory symptoms and digestive comfort. Further rigorous randomised controlled trials are needed to establish optimal dosing and efficacy for specific health conditions.
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The Bottom Line on Oregano Oil
Oregano Oil is well-researched with strong evidence supporting its primary benefits.It is most commonly used for antimicrobial and antifungal activity against various pathogens and antioxidant support and reduced oxidative stress. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for Oregano Oil
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