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Optimization of a tablet containing chlorthalidone.

G C Ceschel1, P Maffei, R Badiello

  • 1Istituto di Scienze Chimiche, Universitè degli Studi di Bologna, Italy.

Drug Development and Industrial Pharmacy
|December 22, 1999
PubMed
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Optimizing tablet formulations using lactose and compression pressure improves drug delivery. However, microclimatic stress impacts tablet quality, highlighting the need for controlled excipient storage conditions.

Area of Science:

  • Pharmaceutical Technology
  • Drug Delivery Systems
  • Formulation Science

Background:

  • Optimization studies in pharmaceutical research aim to develop effective and functional drug formulations.
  • Tablet physical characteristics and drug dissolution are critical for therapeutic efficacy.
  • Chlorthalidone is an antihypertensive drug commonly administered in tablet form.

Purpose of the Study:

  • To investigate the impact of formulation (lactose amount) and technological (compression pressure) parameters on chlorthalidone tablet properties.
  • To evaluate the influence of microclimatic stress (temperature and humidity) on optimized tablet formulations.
  • To identify a simple optimization method for developing suitable tablet formulations.

Main Methods:

  • Systematic variation of lactose content and compression pressure during tablet manufacturing.

Related Experiment Videos

  • Assessment of tablet physical characteristics: thickness, friability, hardness, and drug dissolution rate.
  • Exposure of optimized tablets to controlled temperature and humidity to evaluate microclimatic stress effects.

    • Main Results:

    • A simple optimization method successfully identified suitable tablet formulations based on physical characteristics and dissolution.
    • Optimized chlorthalidone tablets exhibited desirable physical properties and drug release profiles.
    • Microclimatic stress (temperature and humidity) significantly affected the quality of the optimized tablets, causing them to fall outside established limits.

    Conclusions:

    • Simple optimization methods are effective in developing functional tablet formulations.
    • Excipient storage conditions are crucial, as microclimatic stress can compromise the quality of optimized drug products.
    • Controlling the storage environment of pharmaceutical excipients is essential before their use in manufacturing.