| abstract |
The invention provides a novel metoprolol tartrate-containing matrix sustained-release tablet, i.e. a metoprolol tartrate matrix sustained-release tablet with a regulation layer. The novel double-layer matrix sustained-release tablet with the regulation layer is prepared by adding the regulation layer on the basis of the traditional metoprolol tartrate matrix sustained-release tablet, can release medicines uniformly in 24 hours, overcomes the defects of the metoprolol tartrate sustained-release tablet in the prior art, and has the advantages of ideal release effect, simple process and low cost. |