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Related Experiment Videos

Effect of a melt agglomeration process on agglomerates containing solid dispersions.

Thomas Vilhelmsen1, Helle Eliasen, Torben Schaefer

  • 1The Danish University of Pharmaceutical Sciences, Department of Pharmaceutics, 2 Universitetsparken, DK-2100 Copenhagen, Denmark.

International Journal of Pharmaceutics
|September 6, 2005
PubMed
Summary

Melt agglomeration improved Lu-X dissolution rates. The melt-in manufacturing method generally yielded better results than spray-on, depending on binder properties and agglomeration mechanisms.

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Area of Science:

  • Pharmaceutical Technology
  • Materials Science

Background:

  • Poorly water-soluble drugs present formulation challenges.
  • Solid dispersions can enhance drug dissolution and bioavailability.
  • Melt agglomeration is a scalable technique for producing solid dispersions.

Purpose of the Study:

  • To create solid dispersions of the poorly water-soluble drug Lu-X using melt agglomeration.
  • To evaluate the impact of different binder types and manufacturing methods on Lu-X dissolution.
  • To characterize the resulting agglomerates and understand drug distribution.

Main Methods:

  • Melt agglomeration of Lu-X with lactose monohydrate using Rylo MG12, Gelucire 50/13, PEG 3000, or poloxamer 188.
  • Two manufacturing procedures: melt-in and spray-on.

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  • Characterization using Differential Scanning Calorimetry (DSC), X-ray Powder Diffraction (XRPD), Scanning Electron Microscopy (SEM), and Energy Dispersive X-ray Spectroscopy (EDX-SEM).

    • Main Results:

    • Agglomerates containing solid dispersions showed significantly improved dissolution rates compared to physical mixtures and pure Lu-X.
    • The melt-in procedure generally resulted in higher dissolution rates, except when using Rylo MG12.
    • Manufacturing method influenced Lu-X distribution within agglomerates, correlating with agglomeration mechanisms (immersion vs. distribution/coalescence).

    Conclusions:

    • Melt agglomeration is effective for producing solid dispersions of Lu-X with enhanced dissolution.
    • The choice of binder and manufacturing method critically impacts dissolution performance and drug distribution.
    • The crystalline nature of the compounds and stability of dissolution profiles were confirmed.