The invention provides a mecobalamin sustained-release micro-tablet which is composed of a sustained-release layer, a release layer and a
coating layer, the sustained-release layer and the release layer form a double-layer release
system, the release speed of mecobalamin is effectively controlled by controlling the
drug proportion of the sustained-release layer and the release layer, the problem that
drug release is fast due to the small size and the large specific surface area of the micro-tablet is solved, and the mecobalamin sustained-release micro-tablet is suitable for large-scale production. And the micro-tablet realizes long-time, continuous and stable release of the
medicine. The mecobalamin sustained-release micro-tablet provided by the invention has the
diameter of 1-3mm and the tablet weight of 20-60mg, and compared with a common tablet, the sustained-release micro-tablet can reduce the administration frequency of a patient, realizes administration once a day, improves the compliance of the patient, and can meet the medication requirements of children, old people, patients with
dysphagia and the like.