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GUT & DIGESTIVE

Oregano Oil (Carvacrol)

Gut · immune

MODERATE EVIDENCEVEGANREAD THE RESEARCH
Written to our editorial standards · reviewed against published research· Updated 5 Jun 2026
Last reviewed: May 30, 2026
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Oregano Oil: Gut · immune. Concentrated carvacrol and thymol give oregano oil broad antimicrobial activity used short-term for gut and seasonal immune support. Standard dose 150 mg standardized, taken in the morning, about $14/month. Evidence rating: moderate evidence.

Where to buy

NOWFOODSOregano Oil softgels90 SOFTGELSDIETARY SUPP.
RECOMMENDED
NOW Foods, Oregano Oil
150 mg standardized · Morning · ~$14/month

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All product options

NOWFOODSOregano Oil softgels90 SOFTGELSDIETARY SUPP.BESTSELLER
Oregano Oil softgels
NOW Foods
90 softgels · $14 · ★ 4.7
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NORTHAMERICAN HERB & SPICEOreganol P731 FL OZDIETARY SUPP.PREMIUM
Oreganol P73
North American Herb & Spice
1 fl oz · $30 · ★ 4.8
Buy on iHerb →Buy on Amazon →
CALIFORNIAGOLD NUTRITIONOregano Oil90 SOFTGELSDIETARY SUPP.BEST VALUE
Oregano Oil
California Gold Nutrition
90 softgels · $10 · ★ 4.6
Buy on iHerb →Buy on Amazon →
GAIAHERBSOil of Oregano60 CAPSULESDIETARY SUPP.PREMIUM
Oil of Oregano
Gaia Herbs
60 capsules · $25 · ★ 4.7
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What is Oregano Oil?

Oil of oregano is concentrated from Origanum vulgare and standardized to its active phenols, carvacrol and thymol. These compounds show broad antimicrobial and antifungal activity in laboratory studies and are used short-term for gut balance and seasonal immune support. Because it is potent, oregano oil is best taken in enteric or emulsified softgels to avoid heartburn, and cycled rather than taken continuously, since it can affect beneficial gut bacteria too. Avoid in pregnancy and alongside blood thinners. Look for a product standardized to at least 55 to 70 percent carvacrol.

WHY IT MATTERS

Concentrated carvacrol and thymol give oregano oil broad antimicrobial activity used short-term for gut and seasonal immune support.

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Common questions

What is Oregano Oil?
Oil of oregano is concentrated from Origanum vulgare and standardized to its active phenols, carvacrol and thymol. These compounds show broad antimicrobial and antifungal activity in laboratory studies and are used short-term for gut balance and seasonal immune support. Because it is potent, oregano oil is best taken in enteric or emulsified softgels to avoid heartburn, and cycled rather than taken continuously, since it can affect beneficial gut bacteria too. Avoid in pregnancy and alongside blood thinners. Look for a product standardized to at least 55 to 70 percent carvacrol.
What is Oregano Oil used for?
Gut · immune. Concentrated carvacrol and thymol give oregano oil broad antimicrobial activity used short-term for gut and seasonal immune support.
What is the standard dose of Oregano Oil?
150 mg standardized, typically taken in the morning. Approximate cost is $14 per month.
Who should avoid Oregano Oil?
Use extra caution, and speak to a clinician first, if you are pregnant or nursing, on blood thinners.
How strong is the evidence for Oregano Oil?
Moderate evidence for its primary uses. See the full study list on the research page.

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