The busulfan toothpaste works because busulfan is mainly used as an antiviral treatment and busulfan toothpaste is also used as an antiviral treatment. In fact, busulfan toothpaste does not help much in maintaining the teeth in the mouth and is mainly suitable for patients who have recently developed herpes or ulcers in the mouth. Moreover, this anti-inflammatory toothpaste is not recommended for patients to use for a long period of time, as it is likely to lead to the development of dysbiosis and fungal infections in the mouth. Patients also have a certain time limit in the use of the process, generally do not exceed two weeks, to avoid the oral cavity to produce resistance.