What Is Oregano Oil?

Oregano oil, or oil of oregano, comes from the leaves of the oregano plant and has been used in folk medicine for centuries to prevent illness. Today, many people still use it to fight infections and the common cold despite its renowned bitter, unpleasant taste.

Oregano Oil Benefits

Research has found a number of potential health benefits of oregano oil: 

Antibacterial properties

Several studies have shown the powerful antibacterial properties of oregano oil, even against antibiotic-resistant strains of bacteria.

In one study that tested the antibacterial effects of a range of essential oils, oregano oil was found to be the best at hindering bacterial growth.

Because it can protect against bacterial infection, topical oregano oil has been shown to be effective in wound treatment and healing.

Oregano oil contains a substance called carvacrol, which studies have found to be effective against a bacteria called Staphylococcus aureus. That bug can contaminate food, especially meat and dairy products, and is a leading cause of foodborne illness around the world. 

Researchers also have found that the herbal oil can effective in treating small intestinal bacterial overgrowth (SIBO), a digestive condition. 

Antioxidant properties

Another substance found in oregano oil is thymol. Both it and carvacrol have antioxidant effects and may be able to replace synthetic antioxidants added to foods.

Anti-Inflammatory effects

Oregano oil also has anti-inflammatory effects. One study showed that oregano essential oil significantly inhibited several inflammatory biomarkers in skin. 

Improvement of acne

Because of its combined antibacterial and anti-inflammatoryproperties, oregano oil may help improve the appearance of acne by reducing blemishes. Because using oral antibiotics to treat acne has a range of potential side effects, oregano oil may provide a safe and effective alternative when used topically.

Cholesterol management

Oregano oil has been found to support healthy cholesterol levels. A study of 48 people who took a small amount of oregano oil after each meal showed a significant reduction in their LDL (or “bad”) cholesterol, which is one of the main causes of the clogged arteries that can lead to heart disease.

Digestive health

Oil of oregano is commonly used to treat digestive problems like belly cramps, bloating, and irritable bowel syndrome, among others. While more research continues, experts have found that carvacrol is effective against types of bacteria that cause digestive discomfort.

Oregano oil for yeast infections

Yeast infections, caused by a fungus called candida, are one of the most common types of vaginal infections. Some strains of candida are becoming resistant to antifungal drugs. Early research on oregano oil in vapor form as an alternative is promising.