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Transdermal Drug Delivery Systems01:18

Transdermal Drug Delivery Systems

144
Transdermal drug delivery systems (TDDS) enable the controlled release of drugs across the skin into systemic circulation. They are particularly advantageous for drugs with short half-lives or narrow therapeutic indices, as they maintain consistent plasma concentrations and reduce the risk of subtherapeutic or toxic levels.TDDS are categorized into monolithic, reservoir, and mixed systems. Monolithic systems embed the drug in a polymer matrix, where diffusion governs release. Reservoir systems...
144
Modified-Release Drug Delivery Systems: Stimuli-Activated01:30

Modified-Release Drug Delivery Systems: Stimuli-Activated

118
Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also...
118
Parenteral Drug Delivery Systems: Injectables, Implants, and Infusion Devices01:28

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

120
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...
120
Drug Delivery Systems: Different Types01:27

Drug Delivery Systems: Different Types

254
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,...
254
Modified-Release Drug Delivery Systems: Site-Targeted01:24

Modified-Release Drug Delivery Systems: Site-Targeted

112
Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
112
Modified-Release Drug Delivery Systems: Classification01:23

Modified-Release Drug Delivery Systems: Classification

261
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...
261

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Related Experiment Video

Updated: Apr 3, 2026

Fabrication and Characterization of a Conformal Skin-like Electronic System for Quantitative, Cutaneous Wound Management
08:50

Fabrication and Characterization of a Conformal Skin-like Electronic System for Quantitative, Cutaneous Wound Management

Published on: September 2, 2015

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Cosmetic devices based on active transdermal technologies.

Jessica A Scott1, Ajay K Banga1

  • 1Mercer University, College of Pharmacy, Atlanta, GA, USA.

Therapeutic Delivery
|September 22, 2015
PubMed
Summary
This summary is machine-generated.

Active transdermal technology enhances skin aesthetics and cosmetic agent delivery. This review covers skin structure, types, repair, and common technologies like microneedles and lasers in cosmetic devices.

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Area of Science:

  • Dermatology and Cosmetic Science

Background:

  • Active transdermal technology, traditionally for drug delivery, is now widely adopted in cosmetics.
  • The cosmetic industry utilizes these technologies for skin aesthetic restoration and agent delivery.

Purpose of the Study:

  • To provide an overview of skin structure, types, and self-repair mechanisms.
  • To discuss cosmetic applications of active transdermal technologies.
  • To review common active transdermal technologies and their use in marketed cosmetic devices.

Main Methods:

  • Overview of skin physiology and self-repair mechanisms.
  • Review of active transdermal technologies: microneedles, iontophoresis, sonophoresis, lasers, and microdermabrasion.
  • Analysis of marketed cosmetic devices incorporating these technologies.

Main Results:

  • Detailed summaries of common active transdermal technologies and their cosmetic applications.
  • Identification of marketed cosmetic devices utilizing these technologies.
  • Exploration of combined technologies for enhanced cosmetic outcomes.

Conclusions:

  • Active transdermal technologies offer significant potential for cosmetic skin treatments.
  • Understanding skin structure and repair mechanisms is crucial for optimizing cosmetic device efficacy.
  • Current limitations in cosmetic device technology warrant further research and development.