The Food and Drug Administration (FDA) issued a warning against utilizing ozone treatment in 2019. This is due to a lack of sufficient data to establish that it is beneficial or safe for medical usage. Ozone therapy uses oxygen molecules, which are split when they hit water into single atoms and molecules that can kill bacteria and other organisms. Because the FDA does not regulate medical devices such as ozone generators, there are no requirements in place to prove their safety or effectiveness. Ozone has been used in medicine for many years. It is known to be effective at killing viruses that cause the common cold. However, studies have shown that using ozone to treat people with the flu may do more harm than good. Ozone inhalation can be toxic to lungs so care should be taken not to breathe in excess ozone. People who suffer from asthma or other respiratory conditions should not use ozone because there is a risk that it could make those problems worse. In conclusion, ozonated water is safe but its benefits must be considered along with its risks. If you are thinking about trying it, talk to your doctor first to determine if it's right for you.