Skip to main content

Oregano Oil: The Clinical Evidence

  • Author:
  • Updated date:

Nabeel is a senior content writer and editor at first move digital, he loves writing about health and health care systems.

Oregano oil is one of nature's most potent antioxidants and a natural antibiotic. It has been used for thousands of years to treat a wide variety of ailments including cold and flu symptoms and viruses, bacteria infections, fungus and even candida. Its many different uses in the body have been studied scientifically, keep reading to learn more about nature's antibiotic.


Oregano Oil Active Ingredients & Benefits

Oregano oil contains phenols, terpenes and terpenoids that give it its strong smell and health benefits. Oregano oil contains three main active ingredients that help it do its magic:

• Carvacrol

• Thymol

• Rosmarinic

The primary active ingredient in oregano oil is carvacrol. This compound has many benefits but its most well known for its anti-bacterial, anti-fungal and antiviral properties. The thymol compound found in oregano oil provides anti-parasitic properties and Rosmarinic acid offers antioxidant properties and helps inhibit inflammation.


In a major review of the literature, researchers concluded that oregano oil exhibits antimicrobial, antioxidant and anti-inflammatory properties. There was evidence to support the potential uses of oregano oil for cardiovascular system support and metabolic syndrome. Additionally, oregano oil could support healthy cell growth. Let’s take a look at some of the clinical evidence behind oregano oil.

Scroll to Continue

Oregano Oil and Viruses

Being nature’s antibiotic, it’s no surprise that research shows oregano oil can be an effective supplement against many types of bacteria. Studies have concluded that when Mexican oregano oil was taken, it offered antiviral support against the influenza virus and helped mitigate gastro issues such as diarrhea.

Oregano Oil as an Antimicrobial

In one study, oregano oil was found to inhibit six common bacteria, including Staphylococcus aureus, methicillin-resistant Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa. In another study, oregano oil was studied for its ability to inhibit pathogenic microbes such as E. coli. The researchers found that both thyme and oregano oil were most effective at inhibiting pathogenic microbes. This is important, because there is a need for natural alternatives to antibiotics with the rise of antibiotic-resistant bacteria.

Oregano Oil and Candida

Candida albicans is a fungus that is normally found in the digestive tract, vaginal tract and mouth. Under normal conditions, C. Albicans will not spread; however, certain factors can cause it to spread out of control, including diet and stress. A candida infection is also known as a yeast infection in the vagina. Oregano oil can help act as an antibiotic, killing off the candida cells while also helping the body detoxify. In fact, one study showed that oregano oil was effective against oral candida infections.

Oregano Oil: Liquid or Capsules?

When deciding whether to take liquid or capsule oregano, you must first think about your preference, whether you can swallow capsules or not, your lifestyle and how severe your symptoms are. Liquid is more bioavailable and better absorbed than capsules, but if you travel or need to take oregano while out and about, capsules are obviously more favourable. No matter which format you choose, be sure to start off with a lower dose and work your way up, especially with liquid as it’s very strong in both effectiveness and taste. Generally 4 drops is the recommended dose and no matter the format, it shouldn’t be taken for more than 5 days at a time.


Oregano is known for its ability to fight off common flu symptoms and also kill candida and parasitic infections. But that’s not all it’s good for, due to its rich antioxidant profile, oregano oil can also boost your immune system to keep it strong and on the defence. No wonder it’s such a popular supplement!

Which Oregano Supplement is Best?

Which Oregano Supplement is Best?

Knowing which brand or product to trust can be overwhelming given all the choices available. North American Herb & Spice has oregano supplements in both capsule and liquid forms. Their liquid formula, Oreganol P-73 is made with Mediterranean sourced oregano that’s been cold pressed and steam distilled for optimal potency and purity. Their capsule formula, Oregamax is a trusted formula that’s considered 5-stars amongst consumers.


Disclaimer: The information in this article is intended for educational and informational purposes only and should not be considered as a substitute for medical advice. Please consult your practitioner prior to taking herbs or nutritional supplements.

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2022 Nabeel

Related Articles