Oregano Oil Guide

Oregano oil is a concentrated herbal ingredient that contains compounds such as carvacrol. Learn how Jamieson uses it for immune support, how liquid and softgel formats compare, and what to consider when choosing a supplement.

✅ Reviewed by Jamieson's Science Team

Quick Answers

What is oregano oil?

Oregano oil is a concentrated preparation from the oregano plant, Origanum vulgare, used as a medicinal ingredient in natural health products.¹

What is carvacrol?

Carvacrol is one of the key naturally occurring compounds in oregano oil. It contributes to oregano oil’s antioxidant activity, helping protect cells from oxidative damage.

Does oregano oil support immunity?

Jamieson’s current oregano-oil products are positioned to support a healthy immune system, with some formulas also adding vitamin D for additional immune support.

Does oregano oil come in drops and softgels?

Yes. Jamieson currently offers both a liquid-drop format and an extra-strength softgel formula.

What is oregano oil?

Oregano oil is a concentrated herbal preparation made from Origanum vulgare. One of its main naturally occurring compounds is carvacrol. 

Carvacrol matters because it’s one of the compounds associated with oregano oil’s antioxidant activity. Oregano-oil supplements are often standardized to a specific percentage of carvacrol so you know you’re getting a consistent amount of this key compound in each serving. 

How does oregano oil support the body?

Oregano oil provides compounds such as carvacrol that contribute antioxidant activity. Antioxidants help protect cells from oxidative damage caused by free radicals. 

Jamieson’s oregano-oil formulas are also positioned for immune support. Some formulas include vitamin D and vitamin E, which provide additional immune and antioxidant support. 

Which health goals can oregano oil support?

Immune Support

Jamieson’s current oregano-oil formulas are positioned to support a healthy immune system.

Everyday Wellness

Oregano oil provides antioxidant support that helps protect cells from oxidative damage.

Antioxidant Support

Carvacrol and other naturally occurring compounds in oregano oil contribute antioxidant activity that helps protect cells from free-radical damage.

How can oregano oil fit into your routine?

Oregano oil is often used as part of a routine focused on immune and antioxidant support. 

  • For immune-focused routines: Jamieson positions oregano oil as part of everyday immune support. 
  • For antioxidant support: Compounds such as carvacrol help protect cells from oxidative damage. 
  • Choose the format that fits: Drops may suit people who prefer liquids, while softgels can be easier for people who dislike the strong taste. 
  • Support the basics: Sleep, balanced nutrition, regular movement, and hand hygiene still matter for everyday immune health. 

*It is important to consult your trusted healthcare practitioner before adding any new natural health supplement to your routine.

What should you look for in an oregano oil supplement?

Start with the carvacrol concentration, the amount of oregano oil, and the format.

  • Check the carvacrol percentage: Carvacrol is one of oregano oil’s key active compounds and contributes to its antioxidant activity. A standardized percentage helps you compare the strength and consistency of different formulas. 
  • Compare the oregano-oil amount: Higher amounts provide more oregano oil per serving, but should still be used according to label directions. 
  • Choose drops or softgels: Liquid and softgel formats offer different ways to take oregano oil. 
  • Check added nutrients: Some formulas also include vitamin D and vitamin E for additional immune and antioxidant support. 
  • Review allergies: Avoid oregano oil if you’re allergic to plants in the mint family, including basil, lavender, rosemary, sage, thyme, or mint. 
  • Look for an NPN: Choose a licensed natural health product with an eight-digit NPN. 
  • Look for quality: Jamieson products are backed by the Jamieson 360 Quality Promise. 

For more than 100 years, Jamieson has combined scientific expertise with rigorous quality testing. Every product is backed by the Jamieson 360 Quality Promise. 

*It is important to consult your trusted healthcare practitioner before adding any new natural health supplement to your routine.  

FAQs

What is carvacrol in oregano oil?

Carvacrol is one of the main active compounds in oregano oil. It contributes to oregano oil’s antioxidant activity, helping protect cells from oxidative damage caused by free radicals.

Why does the carvacrol percentage matter?

The percentage helps show how concentrated the oregano oil is in this key compound. A standardized carvacrol level also helps provide a more consistent amount from serving to serving.

Does oregano oil support immune health?

Jamieson’s current oregano-oil products are positioned to support a healthy immune system. Some formulas also contain vitamin D, which helps maintain normal immune function.

Sources

1. Health Canada. Natural Health Products Ingredients Database — Origanum vulgare.[Text Wrapping Break]https://webprod.hc-sc.gc.ca/nhpid-bdipsn/ingredReq?id=6696 

2. Health Canada. Licensed Natural Health Products Database — Oregano Oil / Extra Strength Oregano Oil / Oregano + D3 + E, NPN 80093083.[Text Wrapping Break]https://health-products.canada.ca/lnhpd-bdpsnh/info?lang=eng&licence=80093083 

3. Health Canada. Licensed Natural Health Products Database — Oregano Oil product record, NPN 80041548.[Text Wrapping Break]https://health-products.canada.ca/lnhpd-bdpsnh/info?licence=80041548