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Related Concept Videos

In Vitro Drug Dissolution: Compendial Testing Models I01:13

In Vitro Drug Dissolution: Compendial Testing Models I

533
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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Oral Drug Delivery Systems: Introduction01:23

Oral Drug Delivery Systems: Introduction

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Oral drug delivery is the most common route of administration due to its convenience, cost-effectiveness, and high patient compliance. It enables precise formulation to ensure proper drug dosage and bioavailability. The development of oral dosage forms considers drug properties such as solubility, stability, and absorption to optimize therapeutic efficacy.Tablets, capsules, liquids, and chewable formulations enhance drug stability, mask undesirable tastes, and improve patient experience.
250
In Vitro Drug Dissolution: Compendial Testing Models II01:09

In Vitro Drug Dissolution: Compendial Testing Models II

641
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,...
641
In Vitro Drug Dissolution: Alternative Methods01:17

In Vitro Drug Dissolution: Alternative Methods

376
Alternative drug dissolution methods include the rotating bottle, intrinsic dissolution test, peristalsis, and the Franz diffusion cell method. The rotating bottle method involves meticulously rotating tightly capped controlled-release beads in a temperature-controlled bath. Periodic decanting of samples allows for residue assay, followed by refilling with fresh medium and testing at various pH levels to emulate the gastrointestinal tract conditions.In contrast, the intrinsic dissolution test...
376
Drug Dissolution: Requirements and Profile Comparison01:14

Drug Dissolution: Requirements and Profile Comparison

459
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...
459
Factors Affecting Dissolution: Particle Size and Effective Surface Area01:23

Factors Affecting Dissolution: Particle Size and Effective Surface Area

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Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
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Oral Solid Dosage Form Disintegration Testing - The Forgotten Test.

Jozef Al-Gousous1, Peter Langguth1

  • 1Pharmaceutical Technology and Biopharmaceutics, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University Mainz, Mainz, D-55128, Germany.

Journal of Pharmaceutical Sciences
|December 30, 2014
PubMed
Summary
This summary is machine-generated.

Disintegration testing is a key pharmaceutical quality control method. While not fully harmonized, its simplicity offers potential as a dissolution test alternative, pending further research.

Keywords:
bioavailabilitybiopharmaceutics classification system (BCS)dissolutionexcipientsformulationgastrointestinalin vitro modelsintestinal absorption

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Area of Science:

  • Pharmaceutical Science
  • Quality Control
  • Drug Delivery Systems

Background:

  • Disintegration testing has been a vital quality control (QC) test in the pharmaceutical industry since the 1930s.
  • Pharmacopoeias describe disintegration test procedures for various dosage forms, but harmonization remains incomplete.
  • Research has predominantly focused on dissolution testing, as complete disintegration does not guarantee complete dissolution.

Purpose of the Study:

  • To evaluate the potential of disintegration testing as a simpler alternative to dissolution testing.
  • To highlight the need for further research to overcome challenges associated with disintegration testing.
  • To explore how disintegration testing can be optimized for quality assurance in the pharmaceutical industry.

Main Methods:

  • Review of pharmacopoeial disintegration test procedures.
  • Analysis of the relationship between disintegration and dissolution.
  • Examination of International Conference on Harmonization (ICH) guidelines regarding dissolution and disintegration testing.

Main Results:

  • Disintegration testing is recognized by ICH guidelines as a potential replacement for dissolution testing in certain cases due to its simplicity.
  • Despite its advantages, complete disintegration does not always correlate with complete drug dissolution.
  • Further research is required to address existing challenges and fully leverage disintegration testing.

Conclusions:

  • Disintegration testing, while simpler, requires further research to overcome limitations and ensure its effectiveness as a QC measure.
  • Optimizing disintegration testing could lead to significant savings in QC and quality assurance efforts.
  • Harmonization of disintegration test procedures across pharmacopoeias is still an ongoing process.