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Related Concept Videos

In Vitro Drug Dissolution: Compendial Testing Models I01:13

In Vitro Drug Dissolution: Compendial Testing Models I

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Compendial dissolution methods are standardized procedures defined by pharmacopeias to evaluate the rate at which a drug dissolves in a specific medium. These methods ensure batch-to-batch consistency, enable quality control, and support the prediction of drug bioavailability. They are critical for both immediate and modified-release drug products.The apparatuses used for dissolution testing differ in their design and mechanical function, but all aim to simulate the physiological environment of...
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In Vitro Drug Dissolution: Compendial Testing Models II01:09

In Vitro Drug Dissolution: Compendial Testing Models II

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Various dissolution methods are utilized to assess a drug’s dissolution rate, including the flow-through cell, paddle-over-disk, cylinder, and reciprocating disk methods.The flow-through cell apparatus (USP (United States Pharmacopeia) method 4) comprises a reservoir for the dissolution medium and a pump that propels the medium through the cell containing the test sample. This method is crucial for assessing modified-release dosage forms with minimally soluble active ingredients,...
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Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
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Structures of Solids02:22

Structures of Solids

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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Network Covalent Solids02:18

Network Covalent Solids

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Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
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Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
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FIP Guidelines for Dissolution Testing of Solid Oral Products.

Horst Dieter Friedel1, Cynthia K Brown2, Amy R Barker2

  • 1Bayer Aktiengesellschaft, Corporate Quality, Berlin, Germany.

Journal of Pharmaceutical Sciences
|August 28, 2018
PubMed
Summary
This summary is machine-generated.

Dissolution testing is crucial for solid oral dosage forms, aiding quality control and regulatory stability. This article summarizes global views on method development, validation, specifications, and biowaivers for in vitro-in vivo correlation.

Keywords:
automationbioavailabilitybiopharmaceutics classification system (BCS)dissolutiondrug delivery system(s)formulationin vitro–in vivo correlation(s) (IVIVC)solid dosage form(s)surfactant(s)

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Area of Science:

  • Pharmaceutical Sciences
  • Drug Delivery
  • Biopharmaceutics

Background:

  • Dissolution testing is a critical physiochemical assessment for solid oral dosage forms like tablets and capsules.
  • It serves as a key quality control measure for drug product assessment, batch release, and regulatory stability studies.
  • In vitro dissolution results often correlate with the in vivo biopharmaceutical performance of drug products.

Purpose of the Study:

  • To summarize global perspectives from regulatory agencies, pharmacopoeias, academia, and industry on dissolution testing.
  • To highlight key considerations for developing and validating dissolution methods.
  • To provide guidance on setting specifications, conducting in vitro-in vivo comparisons, and obtaining biowaivers.

Main Methods:

  • Literature review and synthesis of guidance from major global agencies (Europe, Japan, United States).
  • Compilation of information from pharmacopoeias, academic research, and industry practices.
  • Analysis of best practices for dissolution method development, validation, and specification setting.

Main Results:

  • The article consolidates expert views on essential aspects of dissolution testing.
  • It outlines strategies for establishing robust dissolution methods and appropriate quality specifications.
  • Guidance is provided on leveraging dissolution data for in vitro-in vivo correlation and biowaiver applications.

Conclusions:

  • Effective dissolution testing is fundamental for ensuring the quality and biopharmaceutical performance of oral drug products.
  • Harmonized approaches to method development, validation, and specification setting are crucial.
  • Understanding in vitro-in vivo relationships facilitates regulatory flexibility through biowaivers.