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Related Experiment Videos

Development of fast-disintegrating pellets in a rotary processor.

Jakob Kristensen1, Torben Schaefer, Peter Kleinebudde

  • 1Royal Danish School of Pharmacy, Department of Pharmaceutics, 2-Universitetsparken, DK-2100 Copenhagen ø, Denmark. jk@dfh.dk

Drug Development and Industrial Pharmacy
|December 13, 2002
PubMed
Summary

Kaolin-based pellets disintegrate rapidly, enhancing drug dissolution for poorly soluble drugs. Bentonite pellets eroded, showing poor disintegration and high adhesion, unlike kaolin formulations.

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Area of Science:

  • Pharmaceutical Technology
  • Drug Delivery Systems
  • Materials Science

Background:

  • Fast-disintegrating dosage forms improve patient compliance and drug absorption.
  • Pelletization is a key process for creating controlled-release and fast-dissolving drug products.
  • Excipient selection significantly impacts pellet properties and drug release.

Purpose of the Study:

  • To formulate and characterize fast-disintegrating pellets using direct pelletization.
  • To investigate the influence of kaolin and bentonite as excipients on pellet properties.
  • To evaluate the drug dissolution profile of kaolin-based pellets compared to microcrystalline cellulose (MCC).

Main Methods:

  • Direct pelletization in an instrumented rotary processor.
  • Formulation with kaolin or bentonite, lactose, and crospovidone.

Related Experiment Videos

  • Assessment of wall adhesion, size distribution, disintegration time, and shape.
  • Comparative drug dissolution studies using a model drug with low aqueous solubility.

    • Main Results:

    • Kaolin formulations produced fast-disintegrating pellets with rapid drug release (100% in 8 min).
    • Bentonite formulations resulted in erosion, not disintegration, and significant wall adhesion.
    • Crospovidone addition improved agglomerate sphericity and increased water content.
    • Kaolin pellets exhibited wider size distributions but superior drug dissolution compared to MCC pellets.

    Conclusions:

    • Kaolin is a suitable excipient for formulating fast-disintegrating pellets, significantly enhancing the dissolution of poorly soluble drugs.
    • Bentonite is not appropriate for fast-disintegrating pellet formulation due to its erosive nature and high wall adhesion.
    • Direct pelletization in a rotary processor is an effective method for producing functional pellets.