The invention provides a
hypnotic double-layer
controlled release tablet, comprising a rapid-release layer and a slow-release layer, wherein the rapid-release layer is provided with pores which are filled with rapid-release particles; the rapid-release layer and the rapid-release particles are composed of
hypnotic drug and pharmaceutical excipients; the slow-release layer is composed of a
hypnotic drug, a slow-release material and pharmaceutical excipients. The hypnotic double-layer
controlled release tablet has the following technical effects that 1) the
physical stability of the double-layer tablet provided by the invention is better than that of the common double-layer table, which is advantageous for storage and transportation, and 2) a
dissolution test detects that the disintegration
time limit of the rapid-release layer of the double-layer tablet provided by the invention ranges from 20 seconds to 30 seconds; and the slow-release layer is in a zero-order
release pattern, and therefore the effectiveness and safety of medication for a patient are greatly improved. In the preparation process of the double-layer tablet, the rapid-release particles fill in the pores. The
drug release pattern of combined rapid release and slow release guarantees that the rapid-release layer is disintegrated rapidly after the drug is taken; as a result, the
blood concentration is capable of quickly reaching the
therapeutic window range; the slow-release layer is slowly released so that the
therapeutic action is maintained for a long period of time and toxic and side effects are effectively controlled.