Oil of oregano, eucalyptus and essential oils have been used to treat various conditions relating to infection, including a sinus infection. Oil of oregano has demonstrated antioxidant, antifungal and antibacterial properties, according to Drugs.com, that would be effective in treating sinusitis. These statements have not been evaluated by the FDA. Sinusitis is an infection in the sinus cavity that causes the nasal passages to swell and place pressure on various parts of the head. Sinus infections are considered common in the United States and are primarily the result of the common cold, according to MayoClinic.com.
Types
Oil of oregano may help treat bacterial and fungal sinusitis and eucalyptus may help treat bacterial sinusitis, according to the University of Maryland Medical Center. If the infection is the result of a viral infection, the supplement may not be as effective. Sinusitis that lasts for less than eight weeks is considered acute, while sinus infections lasting more than eight weeks are considered chronic, according to the University of Maryland Medical Center. If your condition persists for more than eight weeks, your doctor may recommend the use of prescribed antibiotics.
Properties
Oil of oregano has demonstrated high levels of antioxidants. Antioxidants destroy free-radical cells in the body. Free-radical cells are damaged cells that rebel and leave the body vulnerable to infection and disease. The antioxidant properties of oil of oregano may help prevent a sinus infection by promoting overall immune system health. Talk to your doctor about dosing and the general use of this supplement.
Eucalyptus oil has demonstrated antibacterial properties that may be helpful in treating sinusitis related to a bacterial infection. The University of Maryland Medical Center states that mixing citrus oil, pine extract and eucalyptus oil can help alleviate common respiratory symptoms.
Contact Allergic Dermatitis
Drugs.com reports that oil of oregano can cause contact allergic dermatitis. If you experience skin inflammation after touching oil of oregano, call your doctor about the safety of using this supplement. If you develop a rash after touching oil of oregano, wash the effected area and place a cold compress on the area to reduce inflammation and itching, according to MedlinePlus.
Other Warnings
As with any supplement, you are at risk of experiencing anaphylaxis while using herbal supplements, according to Drugs.com. Symptoms of anaphylactic shock include shortness of breath, wheezing, dizziness, lightheadedness, a rapid but faint heart rate, anxiety and a sudden drop in blood pressure. If you experience any of these symptoms, call 911 for emergency medical attention.
Consideration
Oil of oregano, eucalyptus and essential oils may be used the most effectively when taken in combination with traditional medications, such as decongestants and pain relievers. Decongestants will help reduce inflammation in the sinus cavity, allowing the trapped mucus to properly drain from the sinuses.


