Crucial FOUR, INC clarifies that the products displayed on this website are not approved medical devices (unless otherwise stated). Governing health authorities do not support the use of ozone in medicine. Crucial FOUR , INC makes no claims nor suggestions regarding the use of ozone, oxygen, saunas, or ozone related products for ozone therapy for cancer or any other diseases or health challenges. Please consult a qualified physician before using any products, drugs, or devices that may affect your health. Statements made on this website have not been evaluated by the Food and Drug Administration.