Dacronin is a local anesthetic, used to delay ejaculation is mainly the application of its local anesthetic effect, through the anesthesia to reduce the sensitivity of the glans to delay ejaculation. So clinically it can be used to treat premature ejaculation or used to delay ejaculation. Generally half an hour before intercourse can be applied to the glans and the area of the coronary groove. Can be effective for most people, frequent use may reduce the pleasure of intercourse, but generally there are no obvious side effects and very obvious dependence, but pay attention to the possibility of local allergies and so on.