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AAPS PharmSciTech. 2007 September; 8(3): E195–E202.
Published online 2007 September 21. doi:  10.1208/pt0803076
PMCID: PMC2750572

Compressed matrix core tablet as a quick/slow dual-component delivery system containing ibuprofen


The purpose of the present research was to produce a quick/slow biphasic delivery system for ibuprofen. A dual-component tablet made of a sustained release tableted core and an immediate release tableted coat was prepared by direct compression. Both the core and the coat contained a model drug (ibuprofen). The sustained release effect was achieved with a polymer (hydroxypropyl methylcellulose [HPMC] or ethylcellulose) to modulate the release of the drug. The in vitro drug release profile from these tablets showed the desired biphasic release behavior: the ibuprofen contained in the fast releasing component was dissolved within 2 minutes, whereas the drug in the core tablet was released at different times ([subset or is implied by]16 or >24 hours), depending on the composition of the matrix tablet. Based on the release kinetic parameters calculated, it can be concluded that the HPMC core was suitable for providing a constant and controlled release (zero order) for a long period of time.

Keywords: Biphasic delivery system, dual-component tablet

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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