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Factors Influencing Drug Absorption: Pharmaceutical Parameters01:28

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Solid dosage forms such as tablets and capsules undergo rigorous manufacturing processes to ensure stability and effectiveness. Their dissolution and absorption properties are influenced significantly by the choice of excipients (inactive ingredients that serve various roles in the formulation), and the methodology applied during production. The manufacturing parameters, such as compression force and granulation techniques, significantly affect dissolution rates. Elevated compression forces...
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Polymorphism refers to the existence of a drug substance in multiple crystalline forms, known as polymorphs. Recently, this term has been expanded to include solvates (forms containing a solvent), amorphous forms (non-crystalline forms), and desolvated solvates (forms from which the solvent has been removed).
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Orally administered drugs primarily enter the systemic circulation via passive diffusion through the intestinal membranes. The drug's absorption is influenced by drug stability in the gastrointestinal GI tract, membrane permeability, the surface area available for absorption, luminal drug concentration, and residence time in the lumen. Drug permeability can be enhanced by adjusting the lipophilicity, polarity, or molecular size of the drug, promoting its passive transport across intestinal...
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Excipient and Packaging Material Impact on Glass and Polymer-Based Prefilled Syringe Functionality.

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Summary

Cyclic olefin polymer (COP) prefilled syringes (PFSs) offer more consistent extrusion forces than glass PFSs when interacting with various drug excipients. This improved predictability is crucial for precise drug delivery applications.

Keywords:
Contact angleCyclic olefin polymerExcipientsExtrusion forcePrefilled syringeSilicone oil

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Area of Science:

  • Materials Science
  • Pharmaceutical Technology
  • Drug Delivery

Background:

  • Prefilled syringes (PFSs) are critical primary packaging for drug products.
  • Siliconized glass PFSs can exhibit variable extrusion forces due to interactions with drug formulations.
  • Consistent extrusion force is essential for accurate dosing, especially in sensitive applications.

Purpose of the Study:

  • To compare the extrusion force performance of cyclic olefin polymer (COP) PFSs against traditional glass PFSs.
  • To evaluate the impact of various excipients and accelerated storage conditions on PFS extrusion forces.
  • To understand the material basis for differences in PFS performance.

Main Methods:

  • Comparative analysis of extrusion forces using COP and siliconized glass PFSs.
  • Testing with diverse excipient combinations including buffers, tonicity agents, and surfactants.
  • Exposure to accelerated storage conditions to simulate long-term stability.
  • Evaluation of force consistency within individual extrusion strokes.

Main Results:

  • COP PFSs demonstrated more consistent and predictable extrusion forces compared to glass PFSs across tested conditions.
  • COP PFSs exhibited significantly less variance in extrusion forces during each stroke.
  • Observed differences are attributed to the inherent stability and homogeneity of COP versus siliconized glass and their interactions with excipients.

Conclusions:

  • COP PFSs offer superior performance regarding extrusion force consistency over glass PFSs.
  • The material properties of COP contribute to predictable interactions with pharmaceutical excipients.
  • COP PFSs represent a promising alternative for applications requiring high precision and reliability in drug delivery.