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Related Experiment Videos

Cyclodextrin complex osmotic tablet for glipizide delivery.

Yong Gan1, Weisan Pan, Mingchun Wei

  • 1Department of Pharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China. gany118@21cn.com

Drug Development and Industrial Pharmacy
|October 16, 2002
PubMed
Summary

This study developed glipizide-cyclodextrin inclusion complex osmotic pump tablets (OPTs) to enhance drug solubility and achieve zero-order release. The optimized glipizide OPTs demonstrated superior controlled-release properties compared to commercial products.

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Area of Science:

  • Pharmaceutical Technology
  • Drug Delivery Systems
  • Physical Pharmacy

Background:

  • Glipizide is a poorly soluble drug, limiting its oral bioavailability and therapeutic efficacy.
  • Osmotic pump tablets (OPTs) offer a promising drug delivery system for controlled and sustained drug release.
  • Developing effective formulations for poorly soluble drugs like glipizide is crucial for improving patient outcomes.

Purpose of the Study:

  • To enhance the solubility and dissolution rate of glipizide.
  • To formulate and optimize glipizide-loaded osmotic pump tablets (OPTs) with zero-order release kinetics.
  • To evaluate the in vitro drug release profile of the developed glipizide OPTs.

Main Methods:

  • Glipizide was complexed with cyclodextrin using a kneading method to improve solubility.

Related Experiment Videos

  • Polyethylene glycol 4000 (PEG4000) and cellulose acetate (CA) were used as coating materials in an acetone-water co-solvent.
  • Osmotic pump tablets were fabricated, and the effects of osmotic promoting agent, orifice diameter, coating composition, and coat weight on drug release were investigated.

    • Main Results:

    • The glipizide-cyclodextrin inclusion complex significantly enhanced drug solubility.
    • Optimized OPTs exhibited excellent zero-order release characteristics in vitro.
    • The drug release profile was effectively controlled by varying formulation parameters such as coating composition and coat weight.

    Conclusions:

    • Glipizide-cyclodextrin inclusion complexation is an effective strategy to improve the solubility of poorly soluble glipizide.
    • The developed osmotic pump tablets provide a viable platform for achieving zero-order release of glipizide.
    • The optimized glipizide OPTs show potential for improved therapeutic efficacy through sustained drug delivery.