Publications by authors named "Daniel Robin Thio"

Compaction of sustained release coated pellets into multi-unit pellet system (MUPS) tablets has been associated with damage to the functional polymer layer, leading to a loss in desired sustained release function. Many filler materials and complex processes have been studied on their ability to mitigate compaction-induced pellet coat damage. Among these, native or unprocessed starches included in the filler material have not been explored well despite being a simple strategy.

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The influences of the punch face design on multi-unit pellet system (MUPS) tablets were investigated. Drug-loaded pellets coated with sustained release polymer based on ethylcellulose or acrylic were compacted into MUPS tablets. Punch face designs used include standard concave, deep concave, flat-faced bevel edge and flat-faced radius edge.

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Pellet coat damage in multi-unit pellet system (MUPS) tablets has previously been studied and addressed with limited success. The effects of lactose filler material attributes on pellet coat damage have been relatively well-studied but a similar understanding of microcrystalline cellulose (MCC) is lacking notwithstanding its high cushioning potential. Hence, the relationships between MCC attributes and pellet coat damage were investigated.

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Multi-unit pellet system (MUPS) tablets were fabricated by compacting drug-loaded pellets of either crospovidone or microcrystalline cellulose core. These pellets were produced by extrusion-spheronization and coated with ethylcellulose (EC) for a sustained drug release function. Coat damage due to the MUPS tableting process could undermine the sustained release function of the EC-coated pellets.

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