Mannit can be reused with the method of medication has a certain relationship, generally can be reused when used externally, if taken internally, it does not involve reuse of the problem. Specifically as follows: 1, external use: manganese nitrate has the effect of clearing fire and swelling, external use can treat canker sores, hemorrhoids and other painful swelling. At this time can be reused, usually in the high temperature of the mangosteen baked dry, remove the excess water in it, and then the mangosteen broken external application. Can be reused twice, but to change the new bag, in addition to this kind of manganese nitrate should not be re-introduced into the decoction for internal use; 2, internal use: manganese nitrate has a diarrhea and laxative, moistening dryness and softening the effect, can be used for the solid heat stagnation, abdominal fullness and distension, feces dryness, intestinal carbuncle and pain and other conditions. Generally internal medicine will be taken by the patient at once, and the dregs of the medicine have lost their therapeutic utility, and it does not involve the question of whether or not it can be reused. If in the process of reuse, found that the texture of mannitol changed significantly, such as into the crystalline structure, it is not recommended to reuse, so as not to change the efficacy of the drug, can not play the corresponding therapeutic effect, and even serious cases can affect the body’s health.