Ozone therapy is a form of alternative medicine that involves the administration of ozone gas into the body to treat various health conditions. It can be administered via injection or introduced using autohemotherapy, a method where the patient's blood is drawn, exposed to ozone, and then reinjected back into the patient's body. It is believed to enhance the body's natural healing processes by increasing oxygen levels and stimulating immune responses.

Ozone therapy has been used as a complementary treatment for a wide range of diseases, including but not limited to cancer, AIDS, SARS, COPD, alleviating symptoms of Chronic Fatigue Syndrome (CFS), Multiple sclerosis (MS), arthritis, heart disease, Alzheimer's dementia, and Lyme disease.