What is the recommended dosage for Oregano Oil?

Oil: 2-4 drops diluted, 2-3x/day; General: 150-300 mg standardized extract/day (60-80% carvacrol)

What are the side effects of Oregano Oil?

Potential side effects include: Gastrointestinal irritation, Mouth and throat burning (undiluted oil), Allergic reactions (especially in those allergic to Lamiaceae family), Skin irritation with topical use.

What is oregano oil and how does it relate to immune health?

Oregano oil is derived from Origanum vulgare and contains carvacrol and thymol, compounds with demonstrated antimicrobial activity in laboratory studies. Preliminary clinical research has explored its potential for upper respiratory and gastrointestinal immune support.

What dosage of oregano oil has been used in studies?

Limited human studies have used oregano oil at doses of 200–600 mg per day of emulsified oil, or formulations standardized to contain 60–80% carvacrol. Human clinical data remains sparse compared to in-vitro antimicrobial research.

What are the potential side effects of oregano oil?

Oregano oil may cause gastrointestinal irritation, heartburn, and allergic reactions in individuals sensitive to plants in the Lamiaceae family. It may interact with blood-thinning and diabetes medications. Undiluted oregano oil should not be taken internally.

Oregano Oil

herb

Also known as: Origanum vulgare, Carvacrol, Oil of Oregano

𝕏 LinkedIn

<\/script>\n

`; }, get iframeSnippet() { const domain = 'immunecited.com'; const params = 'ingredient\u003Doregano\u002Doil'; return ``; }, get activeSnippet() { return this.method === 'script' ? this.scriptSnippet : this.iframeSnippet; }, copySnippet() { navigator.clipboard.writeText(this.activeSnippet).then(() => { this.copied = true; setTimeout(() => { this.copied = false; }, 2000); }); } }" @keydown.escape.window="open = false" @click.outside="open = false">

Embed This Widget

Style

Widget powered by . Free, no account required.

About

Oregano oil contains carvacrol and thymol, compounds with broad-spectrum antimicrobial activity that modulate inflammatory pathways and support mucosal immune defenses. While in vitro evidence is strong, human clinical data for immune-specific outcomes remains limited.

How It Works

Active compounds carvacrol and thymol exhibit broad-spectrum antimicrobial activity; modulate inflammatory pathways and support mucosal immune defenses through disruption of microbial cell membranes.

Evidence For Conditions

Condition	Grade	Studies	Participants
Upper Respiratory Tract Infections	D	2	50	View →

Side Effects

Gastrointestinal irritation
Mouth and throat burning (undiluted oil)
Allergic reactions (especially in those allergic to Lamiaceae family)
Skin irritation with topical use

Drug & Supplement Interactions

Anticoagulant medications (may increase bleeding risk)
Diabetes medications (may lower blood sugar)
Iron supplements (may reduce iron absorption)

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Andrographis Astragalus Echinacea Elderberry Garlic

Quick Facts

Dosage: Oil: 2-4 drops diluted, 2-3x/day; General: 150-300 mg standardized extract/day (60-80% carvacrol)
Forms: softgel liquid oil capsule
Natural Sources: Wild oregano plant
Upper Limit: No established UL; short-term use recommended
Best Time: With meals; emulsified forms preferred for absorption

Evidence Summary

Upper Respiratory Tract Infections D

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.