The simplest way to provide a dose unit comprising microparticles is to fill into capsules. No special technology is required and coat rupture is not an issue as mechanical stress or high-pressure compaction is not employed. Neither are additional excipients necessary (except possibly a low level of lubricant). Volumetric or dosator filling devices are both suitable for encapsulation. A separate chapter in this book discusses capsules for use with controlled release preparations (Fig. 13.11).
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