The invention discloses an oral disintegrating tablet of
melatonin which is made by selecting the
melatonin, a disintegrator, an effervescing agent, a filling agent, an
odor corrective and a lubricating agent for smashing,
drying, mixing and tablet forming. The
drug can be promptly disintegrated inside the mouth without water and is especially applicable to the patients with the deglutition difficulty or under the special environment, such as the elder, the children, the narcose patient etc. The
drug also has good effect when used in the environment, which lacks the water, such as the outdoors, the battle field etc. The invention has simple technology and cheap cost and is provided with the advantages of short production period, simple production equipment etc. The oral disintegrating tablet which is prepared by the method of the invention has the enough rigidity to meet the requirements of the production, the packaging, the storage and the transportation, and at the same time the oral disintegrating tablet has good taste and short disintegrating time, and the inside-body disintegrating time is less than thirty seconds; the dissolved quantity inside the 37 DEG C artificial gastric juice and
intestinal juice within one minute is 40 percent, and the dissolved quantity within six minutes is as high as 90 percent.