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Modified-Release Drug Delivery Systems: Influencing Factors

Modified-Release Drug Delivery Systems: Influencing Factors

Modified-release drug delivery systems are designed to optimize the therapeutic effect of drugs by minimizing side effects, reducing the dosage required, and controlling drug release to align with pharmacokinetic and pharmacodynamic needs. The system depends on two key factors: the drug's release from the formulation and its movement through the body to the target site. Unlike conventional dosage forms, where absorption is the limiting step, the rate of drug release is the key determinant in...

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...

Modified-Release Drug Delivery Systems: Classification

Modified-Release Drug Delivery Systems: Classification

Modified-release drug delivery systems improve drug efficacy and minimize side effects by controlling the rate and location of drug release. These systems fall into three categories: rate-programmed, stimuli-activated, and site-targeted.Rate-programmed systems release drugs at a predetermined rate, maintaining consistent therapeutic levels and reducing fluctuations that could lead to toxicity or subtherapeutic effects. These systems use polymeric matrices, reservoir-based designs, or osmotic...

Modified-Release Drug Delivery Systems: Overview

Modified-Release Drug Delivery Systems: Overview

Modified-release dosage forms are designed to address the limitations of drugs with short biological half-lives. These forms maintain stable therapeutic drug concentrations over extended periods, reducing the need for frequent dosing. A consistent drug level helps minimize peak-trough fluctuations, which can reduce adverse effects, lower the risk of drug resistance, and improve overall treatment effectiveness.One common type of modified-release form is the extended-release (ER) formulation. ER...

Parenteral Drug Delivery Systems: Injectables, Implants, and Infusion Devices

Parenteral Drug Delivery Systems: Injectables, Implants, and Infusion Devices

Parenteral drug delivery systems play a crucial role in modern therapeutics by enabling the direct administration of drugs into the systemic circulation, bypassing the gastrointestinal tract. These systems are particularly valuable for poorly absorbed oral medications that are unstable in the digestive environment or require rapid onset or sustained therapeutic levels. Delivery is achieved through intravenous, intramuscular, or subcutaneous routes, each selected based on the drug's properties...

Drug Delivery Systems: Different Types

Drug Delivery Systems: Different Types

Conventional oral drug products, termed immediate-release (IR) formulations, are engineered to promptly release their active pharmaceutical ingredient (API) upon ingestion, typically in tablets or capsules. This rapid release often results in swift drug absorption and consequent pharmacodynamic effects, although the timing and intensity can vary depending on the drug's properties. Prodrugs within these formulations require metabolic conversion to activate their pharmacodynamic effects,...

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Related Experiment Video

Updated: Jun 26, 2026

High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods

High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods

Published on: December 23, 2013

The challenges of packaging combination devices.

George Mankel¹

¹Perfecseal, Londonderry, Northern Ireland, UK. gmankel@bemis.com

Medical Device Technology

|January 13, 2009

Summary

A novel packaging format was developed for drug-eluting stents. This packaging allows for ethylene oxide sterilization while protecting the stent and drug from moisture and oxygen during storage.

Area of Science:

Materials Science
Biomedical Engineering
Pharmaceutical Packaging

Background:

Drug-eluting stents (DES) require specialized packaging for sterilization and stability.
Current packaging may not adequately protect both the stent and its incorporated drug coating.

Purpose of the Study:

To develop a dual-function packaging format for drug-eluting stents.
To ensure compatibility with ethylene oxide sterilization and provide a protective barrier during storage.

Main Methods:

Development of a novel pouch design.
Establishment of a commercial-scale manufacturing process for the packaging.
Evaluation of packaging performance for gas transfer and barrier properties.

Main Results:

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A packaging format meeting dual sterilization and storage requirements was successfully developed.
The manufacturing process was validated for commercial scalability.
The packaging demonstrated effective ethylene oxide gas transfer and robust moisture/oxygen barrier properties.

Conclusions:

The developed packaging solution addresses critical needs for drug-eluting stent delivery.
This innovation supports the safe and effective storage of drug-eluting stents.
The commercial-scale process enables widespread adoption of this advanced packaging.