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Related Experiment Videos

New injectable melphalan formulations utilizing (SBE)(7m)-beta-CD or HP-beta-CD.

D Q Ma1, R A Rajewski, V J Stella

  • 1Higuchi Biosciences Center for Drug Delivery Research, Lawrence, KS, USA.

International Journal of Pharmaceutics
|October 28, 1999
PubMed
Summary

New cyclodextrin formulations enhance melphalan's solubility and stability for injectable use. These advanced drug delivery systems offer a more convenient one-vial option, improving upon current treatments.

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Area of Science:

  • Pharmaceutical Sciences
  • Drug Delivery
  • Oncology

Background:

  • Melphalan is an anti-neoplastic agent with limited aqueous solubility and chemical stability.
  • Current injectable formulations use a two-vial system with co-solvents, posing usability challenges.
  • Improving melphalan's formulation is crucial for enhanced cancer therapy.

Purpose of the Study:

  • To evaluate sulfobutylether-beta-cyclodextrin ((SBE)(7m)-beta-CD) and hydroxypropyl-beta-cyclodextrin (HP-beta-CD) as excipients for injectable melphalan.
  • To develop improved melphalan formulations with enhanced solubility, stability, and a simplified delivery system.

Main Methods:

  • Investigated cyclodextrins as reconstitution diluents for melphalan injection.
  • Explored (SBE)(7m)-beta-CD as a freeze-drying excipient in melphalan formulations.

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  • Assessed the stability and usability of the novel formulations.

    • Main Results:

    • Using cyclodextrins as diluents eliminated the need for organic co-solvents and significantly increased the reconstituted melphalan's shelf-life.
    • (SBE)(7m)-beta-CD enabled a stable, freeze-dried, one-vial melphalan formulation.
    • The new formulations demonstrated improved characteristics over the current injectable product.

    Conclusions:

    • Parenterally safe beta-cyclodextrin derivatives offer promising alternatives for melphalan injectable formulations.
    • These excipients can overcome solubility and stability issues, leading to improved drug delivery systems.
    • The findings suggest potential applications for similar challenging drugs requiring enhanced parenteral formulations.