Related Experiment Video
Updated: Jul 2, 2026
07:32
Preparation and Characterization of Individual and Multi-drug Loaded Physically Entrapped Polymeric Micelles
Published on: August 28, 2015
Polymers for mucoadhesive drug delivery system: a current status
G S Asane1, S A Nirmal, K B Rasal
1Department of Pharmaceutics, Pravara Rural College of Pharmacy, Loni, M.S., India. asane1977@rediffmail.com
Drug Development and Industrial Pharmacy
|August 23, 2008
Summary
Bioadhesive polymers enhance oral drug delivery by adhering to mucosal surfaces, improving drug localization and release duration. These polymers are also effective for drug delivery in the eyes, nose, and vagina.
Area of Science:
- Polymer Science
- Pharmaceutics
- Biomaterials
Background:
- Short gastrointestinal transit time limits oral drug absorption.
- Bioadhesive polymers offer a solution by adhering to mucosal surfaces.
- This adhesion improves drug localization and release profiles.
Purpose of the Study:
- To review mucoadhesive polymers for drug delivery.
- To discuss their properties and applications.
- To cover evaluation methods for these systems.
Main Methods:
- Literature review of mucoadhesive polymers.
- Analysis of their properties and applications in various drug delivery systems.
- Discussion of evaluation techniques.
Main Results:
- Bioadhesive polymers significantly improve oral drug delivery by increasing residence time.
- Applications extend to buccal, ocular, nasal, and vaginal routes.
- Various evaluation methods exist to assess mucoadhesion.
Conclusions:
- Mucoadhesive polymers are crucial for controlled and sustained drug release.
- Their application broadens drug delivery possibilities beyond the gastrointestinal tract.
- Further research into mucoadhesive systems holds promise for advanced therapeutics.
More Related Videos
Related Concept Videos
01:24Site-Targeted Drug Delivery Systems: Polymeric Carriers
Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
01:11Oral Drug Delivery Systems: Delayed-Release Systems
Delayed-release drug delivery systems are specialized pharmaceutical formulations designed to postpone the release of active compounds until the drug reaches a specific region of the gastrointestinal (GI) tract, typically the intestine. These systems are essential for drugs that may cause gastric irritation, are unstable in acidic environments, or need to exert therapeutic effects locally in the intestinal or colonic regions.The core feature of delayed-release systems is the use of enteric...
01:19Modified-Release Drug Delivery Systems: Rate-Programmed II
Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...
01:23Modified-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...
01:05Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
01:30Modified-Release Drug Delivery Systems: Stimuli-Activated
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 called...