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Factors Influencing Drug Absorption: Pharmaceutical Parameters

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...

Factors Influencing Drug Absorption: Physicochemical Parameters

Factors Influencing Drug Absorption: Physicochemical Parameters

The physicochemical characteristics of drugs play a crucial role in formulating stable and bioavailable drug products. The solubility of a drug, governed by the varying pH along the GI tract and its dissociation constant (pKa), is pivotal in determining its ionization state and absorption rate. Notably, weak acids and bases remain unionized and are absorbed more rapidly.
Enhanced drug absorption can be achieved by reducing particle sizes and increasing surface areas, thereby facilitating...

Pharmaceutical Alternatives: Polymorphic Form-Related and Particle Size-Related Therapeutic Nonequivalence

Pharmaceutical Alternatives: Polymorphic Form-Related and Particle Size-Related Therapeutic Nonequivalence

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,...

Biopharmaceutics and Pharmacokinetics: Overview

Biopharmaceutics and Pharmacokinetics: Overview

Understanding drugs, drug products, and their performance in pharmaceutical science is pivotal. Drugs, whether simple molecules or complex compounds, are designed to interact with the body's biological systems to diagnose, treat, or prevent diseases. Drug products include various delivery systems such as tablets, capsules, injections, and inhalers. The performance of these drug products is gauged by their ability to deliver the active ingredient to the desired site of action at the appropriate...

Formulation and Manufacturing Process: Physical Attributes of Generic Tablets and Capsules

Formulation and Manufacturing Process: Physical Attributes of Generic Tablets and Capsules

Bioequivalence in generic drugs, such as tablets and capsules, refers to their pharmaceutical equivalence to the brand-name counterparts. However, for therapeutic equivalence, manufacturers must also consider physical attributes like size, shape, and weight (FDA Guidance for Industry, December 2003). Discrepancies in these aspects could impact patient compliance and cause medication errors. For instance, swallowing difficulties, often experienced with larger tablets or capsules, can lead to...

Factors Influencing Drug Absorption: Drug Dissolution

Factors Influencing Drug Absorption: Drug Dissolution

The pharmacokinetic journey of drugs from solid oral dosage forms into systemic circulation is multifaceted. It begins with disintegration, a prerequisite ensuring a solid dosage form's subdivision into minute particles. Dissolution occurs next as these granulated entities solubilize in gastrointestinal fluids. This solubilization is crucial for the succeeding stage, permeation, which describes the traversal of the drug across the intestinal membrane and its subsequent entry into the blood...

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Physicochemical interactions in solid dosage forms.

Ajit S Narang, Divyakant Desai, Sherif Badawy

Pharmaceutical Research

|September 1, 2012

Summary

This summary is machine-generated.

Understanding physicochemical interactions in solid dosage forms is crucial for drug product quality and development. Neglecting these interactions can lead to manufacturing issues and product recalls.

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Area of Science:

Pharmaceutical Sciences
Drug Delivery
Materials Science

Background:

Physicochemical interactions in solid dosage forms are critical for drug product manufacturability, stability, and bioavailability.
Quality-by-Design (QbD) principles necessitate a thorough understanding of these interactions.
Inadequate characterization can impede drug development, scale-up, and commercialization.

Discussion:

This article examines the significant impact of physicochemical interactions on drug product stability and bioavailability.
Case studies illustrate how these interactions have led to the recall of marketed drug products.
Highlighting the risks associated with poor mechanistic understanding.

Key Insights:

Complete characterization of solid dosage form interactions ensures consistent product quality.
Understanding physicochemical behavior is essential for successful drug development and regulatory compliance.
Failure to address these interactions poses risks to patient safety and commercial viability.

Outlook:

Future drug development must prioritize comprehensive physicochemical characterization.
Advanced analytical techniques can elucidate complex interactions in dosage forms.
Proactive management of these interactions will enhance drug product lifecycle and reduce recalls.