Oregano Oil: A Natural Antibiotic That Fights Candida

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Along with providing information on whether oregono oil supplements might be right for you, this article also links to Fullscript where you can buy oregono oil supplements online through Fullscript’s secure healthcare formulary and get free shipping and 20% off the retail price of professional-grade supplements.

Explore the benefits of oregano oil supplements, derived from the leaves and flowers of the oregano plant, known for both culinary and medicinal uses. Oregano oil offers health benefits, including respiratory health, antioxidants, and anti-inflammatory effects. Learn the science-backed advantages of incorporating oregano oil supplements into your daily routine for overall health.

What Is Oregano Oil?

Oregano oil is derived from the leaves and flowers of the oregano plant, which is native to the Mediterranean region. It’s known for its potent aroma and distinct flavor in culinary applications, but it also offers a range of potential health benefits when taken as a supplement. Oregano oil contains compounds such as carvacrol and thymol, which possess antimicrobial and antioxidant properties. These properties may help support the immune system and promote overall health. Additionally, oregano oil supplements have been used traditionally to alleviate symptoms of respiratory conditions and digestive issues. Research suggests that oregano oil may also have anti-inflammatory properties, making it a versatile supplement for supporting various aspects of health. However, it’s important to note that more research is needed to fully understand the benefits and potential risks of oregano oil supplementation.

What Are the Benefits of Oregano Oil?

  • Supporting Digestive Health: Oregano extract and essential oil have shown anti-inflammatory effects in studies with mice, improving gut health by reducing inflammation. These findings suggest that oregano compounds could have benefits for gastrointestinal health in humans as well. [PMC6508890]
    • Anti-Candida and Antifungal Effects: Oregano oil’s well-documented antifungal properties make it a useful natural remedy for conditions like athlete’s foot or yeast infections, as shown in a study where it effectively prevented biofilm formation, disrupted existing biofilms, and inhibited Candida growth, suggesting its potential as a treatment for stubborn Candida infections. [PMID: 33915040]
  • Natural Antibiotic Properties: Oregano oil is particularly effective against various harmful bacteria, making it a natural option for fighting bacterial infections. Its active components, like carvacrol, have been shown to inhibit the growth of bacteria like E. coli and Staphylococcus aureus. A study found that oregano oil effectively killed antibiotic-resistant bacteria and disrupted their ability to form biofilms (a sticky surface area where bacteria thrive). In a mouse model of infected burn wounds, oregano oil significantly reduced bacterial levels without causing harm to the skin, suggesting it could be a promising alternative to antibiotics for treating infections. [PMC6182053]
  • Antioxidant Activity: A study analyzed essential oils from different parts of the Oregano plant for their antioxidant properties, commonly used in traditional Chinese medicine. Results showed that oils from the leaves and flowers showed the highest antioxidant activity, suggesting their health benefits in protecting against oxidative damage. [PMC5260481]
  • Anti-Inflammatory Properties: A study investigated the effects of oregano essential oil rich in carvacrol, on human skin cells. Oregano essential oil inhibited cell growth, decreased inflammation, and affected genes and pathways associated with skin health, indicating its potential for skincare products with anti-inflammatory and anticancer properties. [PMC5801825]
  • Repelling Insects: Oregano oil, known for its natural insect-repelling properties, was tested against bed bugs in lab experiments. It proved highly effective, even matching the performance of a commercial insect repellent.
  • Antiviral Properties: Oregano oil, particularly its components carvacrol and thymol, inhibits the replication. [PMC7375364, PMID: 24779581]

Is Oregano Oil Safe?

Oregano oil is safe and has a rich history of culinary and medicinal use, with few reported adverse effects. When consumed in recommended doses, it is generally well-tolerated. However, it’s important to adhere to dosage guidelines provided by healthcare professionals or product labels to minimize potential side effects. Some people may experience mild digestive discomfort or skin irritation, especially with prolonged or high-dose use. Overall, when used responsibly, oregano oil can be a valuable addition to a healthy lifestyle. Notably, both oregano and oregano oil are deemed “generally recognized as safe” (GRAS) by the U.S. Food and Drug Administration. [PMID: 30000904]

Medication Interactions with Oregano Oil

  • Blood Thinners (Anticoagulants): Oregano oil may increase the risk of bleeding when taken with blood thinners, such as warfarin or aspirin. This interaction could possibly lead to excessive bleeding or bruising.
  • Antidiabetic Medications: Oregano oil may lower blood sugar levels. When combined with antidiabetic medications like insulin or metformin, it could enhance their effects, leading to hypoglycemia (low blood sugar levels).
  • Hypertension Medications: Oregano oil may have mild hypotensive effects, causing a decrease in blood pressure. When taken with medications used to treat high blood pressure, such as ACE inhibitors or beta-blockers, it could enhance their effects, resulting in excessively low blood pressure.
  • Lithium: Oregano oil may increase the elimination of lithium from the body, and may reduce its effectiveness in treating bipolar disorder. It’s essential for persons taking lithium to monitor their lithium levels closely when using oregano oil supplements.
  • Immunosuppressants: Oregano oil may possess immunomodulatory effects. When taken with immunosuppressant medications like corticosteroids or cyclosporine, it could possibly counteract their effects, leading to reduced effectiveness of the immunosuppressant therapy.

Supplement Interactions with Oregano Oil

  • Supplements containing Vitamin K: Oregano oil may interfere with the absorption of vitamin K, may reduce its effectiveness. Vitamin K supplements are often used to support blood clotting, and their effectiveness could be compromised when taken concurrently with oregano oil.
  • Probiotics: Oregano oil possesses antimicrobial properties that may affect the balance of beneficial bacteria in the gut. When taken alongside probiotic supplements, which aim to promote gut health by replenishing beneficial bacteria, oregano oil could possibly reduce the effectiveness of probiotics.
  • Iron Supplements: Oregano oil may inhibit the absorption of iron from the diet or supplements. Iron is essential for the production of red blood cells and overall energy metabolism. When taken with oregano oil, the absorption of iron may be compromised, leading to potential deficiencies.
  • Herbal Immune Boosters: Oregano oil is often used as a natural immune booster due to its antimicrobial properties. When combined with other herbal immune-boosting supplements like echinacea or garlic, oregano oil may enhance their effects, might lead to an overstimulation of the immune system.
  • Omega-3 Fatty Acids: Oregano oil may interact with omega-3 fatty acid supplements, such as fish oil or flaxseed oil. While omega-3 fatty acids are known for their anti-inflammatory properties, the interaction with oregano oil is not well-understood and could possibly alter the absorption or effectiveness of omega-3 supplements.

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Oil of Oregano Phyto-Caps by Gaia Herbs/Professional Solutions

Immune Balance and GI support* A natural antioxidant source, Oil of Oregano contains phytochemicals which support the body’s natural resistance.* Gaia Herbs’ supercritical CO2 extract of Oregano volatile oils contains phenols, including Carvacrol and Thymol. These oils help support a healthy microbial environment in the intestines and a healthy immune response.* Suggested Use: Adults take 1 capsule 2 times daily between meals. Suggested maximum time of use 2-4 weeks or as recommended by your health care practitioner. 

Amount Per 1 Capsule Serving
Oregano leaf supercritical CO2 extract … 230mg
   Carvacrol and Thymol … 32mg 

Oregano Oil by NOW/Personal Care

Origanum vulgare

Aroma: Spicy, camphoraceous.

Benefits: Purifying, comforting, invigorating.

Mixes Well With: chamomile oil, eucalyptus oil, tea tree oil or spearmint oil.

Extraction Method: Steam Distilled from dried flowering herb.

Physical Characteristics:
Specific Gravity: 0.937-0.955
Refractive Index: 1.498-1.521

For aromatherapy use. For all other uses, carefully dilute with a carrier oil such as jojoba, grapeseed, olive, or almond oil prior to use. Please consult an essential oil book or other professional reference source for suggested dilution ratios.

Ingredients: Pure oregano oil.

Natural essential oils are highly concentrated and should be used with care.

Caution: Not for internal or topical use at this strength; never use undiluted. Avoid contact with skin or eyes. Keep out of reach of children. If pregnant or lactating, consult your healthcare practitioner before using.

Purity Tested/Quality Assured.

Food First!

Although this article discusses supplements in detail, don’t forget that we are absolutely committed to the “Food First” approach to nutrition. When it comes to your health, the totality of your eating habits far surpasses the impact of individual nutrients or any single supplement you consume. Even though this article doesn’t delve into the broader picture of your overall diet, it’s crucial to keep this element at the forefront of our minds. Your food needs to provide all the vitamins, minerals, fiber, and phytochemicals to nourish your body systems down to the cellular level.

Food choices, rather than supplements, are the most critical factors for a healthy gut microbiome. These trillions of tiny inhabitants in your gut affect your brain waves; they orchestrate your immune system. They possess the power to create molecules that can switch genes on or off and are even capable of synthesizing neurotransmitters. Opting for organic foods and steering clear of plastic packaging (including those labeled BPA-free) is a smart move to limit toxin exposure. The sum of all these parts leads to a powerful conclusion: the ultimate key to your health lies in the quality and balance of the food you consume. Supplements are secondary.

To Sum It Up

Incorporating oregano oil supplements into your daily routine may offer various health benefits. From supporting immune function and promoting respiratory health to providing antioxidant and anti-inflammatory effects, oregano oil has shown promise in enhancing overall health. Its antimicrobial properties may also aid in combating infections and digestive issues. However, it’s essential to use oregano oil responsibly and follow recommended dosage guidelines to maximize its benefits. As with any supplement, be mindful of potential interactions with medications and other supplements. Explore the potential of oregano oil as a natural addition to your wellness regimen and experience the benefits it may offer for your health.


This Article is Not a Substitute for Medical Advice

Dietary supplements are not designed to diagnose, treat, cure, or prevent any disease. The Supplement Sciences website seeks to provide comprehensive access to the most relevant supplement information along with convenient online ordering. We do not provide medical advice and cannot guarantee that every product suggested is completely without risk. Since each person is unique in their health history and medication use, it is important to discuss supplements with your personal physician. Specifically, pregnant women and individuals being treated for cancer or liver or kidney problems must consult their physician about every nutritional supplement they plan to take. People taking medications for the treatment of HIV or with a history of organ transplant must not take supplements without consulting with their physician.


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