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Related Concept Videos

Drug Dissolution: Requirements and Profile Comparison01:14

Drug Dissolution: Requirements and Profile Comparison

The acceptance criteria for dissolution profile data are anchored in Q values, representing the percentage of drug dissolved within a specified period. This assessment unfolds in three stages:First Stage: The test passes if all six drug dosage units are equal to or greater than Q plus 5%; otherwise, the sample proceeds to the second stage.Second Stage: The average of twelve units must be equal to or greater than Q, with no unit falling below Q - 15% to pass; if not, it progresses to the final...
Pharmaceutical Alternatives: Polymorphic Form-Related and Particle Size-Related Therapeutic Nonequivalence01:27

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Changes in polymorphic forms can significantly influence the bioavailability of poorly soluble drugs. Although the FDA defines pharmaceutical equivalence based on having the same active ingredient, dosage form, and route of administration, it does not automatically disqualify products with different polymorphic forms. This means two products with different polymorphs can still be deemed pharmaceutically equivalent. However, polymorphic differences can affect properties like wettability,...
Bioequivalence studies: Biowaivers01:13

Bioequivalence studies: Biowaivers

In certain scenarios, in vitro dissolution tests can replace in vivo bioequivalence studies. This is particularly true when a drug product, though available in varying strengths, maintains proportional similarity in its active and inactive ingredients. In such cases, the need for in vivo bioequivalence studies for lower strength variants may be waived, provided dissolution tests and in vivo studies on the highest strength yield satisfactory results.Bioequivalence can be indicated through...
Factors Influencing Drug Absorption: Pharmaceutical Parameters01:28

Factors Influencing Drug Absorption: Pharmaceutical Parameters

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...
Biopharmaceutical Factors Influencing Drug Product Design: Overview01:22

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Rational drug product design integrates knowledge of the drug’s physicochemical properties, formulation components, manufacturing techniques, and intended route of administration. Each factor influences the drug’s performance, including how it is released, absorbed, and eliminated in the body.The physicochemical properties of a drug—such as solubility, stability, and particle size—affect its compatibility with excipients and the choice of dosage form. Excipients, though pharmacologically...
Clinically Relevant Drug Product Specifications: Methods of Establishment01:29

Clinically Relevant Drug Product Specifications: Methods of Establishment

Product specifications define the acceptable quality of a pharmaceutical product by ensuring identity, purity, potency, and strength. These specifications serve as benchmarks during development, manufacturing, and post-approval quality control. Clinically relevant specifications are particularly important because they directly relate to a drug's safety and efficacy in clinical use.Dissolution studies are critical biopharmaceutic tools that link in vitro behavior to in vivo performance. They...

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A Package of Established Analytical Tools to Investigate the Solid-State Alteration of Lipid-Based Excipients
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Multivariate wavelet texture analysis for pharmaceutical solid product characterization.

Salvador García-Muñoz1, Alan Carmody

  • 1Pharmaceutical Development, Pfizer Global R&D, Groton, CT 06340, USA. salvador.garcia-munoz@pfizer.com

International Journal of Pharmaceutics
|July 30, 2010
PubMed
Summary
This summary is machine-generated.

Multivariate wavelet texture analysis (MWTA) quantifies pharmaceutical material textures, replacing visual judgment. This method aids process understanding and predicts product performance, like dissolution, for real-time release applications.

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Area of Science:

  • Pharmaceutical Sciences
  • Materials Science
  • Image Analysis

Background:

  • Visual assessment of pharmaceutical material texture is subjective and limited.
  • Quantitative texture analysis is needed for process control and quality assurance.
  • Multivariate Wavelet Texture Analysis (MWTA) offers a potential solution.

Purpose of the Study:

  • To apply and evaluate MWTA for pharmaceutical materials (tablet cores, wet granules, controlled-release tablets).
  • To establish MWTA as a quantitative alternative to visual texture assessment.
  • To explore MWTA's utility in understanding manufacturing processes and predicting product performance.

Main Methods:

  • Application of Multivariate Wavelet Texture Analysis (MWTA) to diverse pharmaceutical materials.
  • Comparison of MWTA-derived metrics with human visual assessments of texture.
  • Correlation of MWTA texture features with manufacturing process parameters and product performance (e.g., dissolution).

Main Results:

  • MWTA metrics align with visual assessments of textural features like erosion and surface roughness.
  • MWTA provides insights into process-texture relationships, aiding in the measurement of difficult parameters (e.g., granule size, surface appearance).
  • MWTA successfully predicted controlled-release tablet dissolution using product texture as input.

Conclusions:

  • MWTA is a viable quantitative tool for pharmaceutical material texture analysis.
  • MWTA enhances understanding of manufacturing processes and quality control.
  • MWTA shows promise for real-time release applications through performance prediction.