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Published on: September 2, 2009
Technological Aspects, Challenges and Applications of Pulsatile Drug Delivery System-A Critical Review
Acharya Balkrishna1, Shalini Mishra1, Shalini Singh2
1Patanjali Herbal Research Department, Patanjali Research Foundation, Haridwar-249405, India.
Pulsatile drug delivery systems (PDDS) offer targeted, timed medication release, improving patient compliance and treatment efficacy for various conditions. These systems overcome limitations of constant drug delivery by providing spatial and temporal control.
Area of Science:
- Pharmaceutical Sciences
- Drug Delivery Systems
- Biomedical Engineering
Background:
- Conventional sustained drug delivery systems maintain constant blood levels, which is not always optimal.
- Pulsatile drug delivery systems (PDDS) provide spatial and temporal control over medication release.
- PDDS enhance patient compliance and therapeutic outcomes by delivering drugs at specific times and locations.
Purpose of the Study:
- To review the advancements and applications of pulsatile drug delivery systems (PDDS).
- To discuss various types of PDDS, including time-controlled, stimuli-induced, and externally regulated systems.
- To highlight the potential of PDDS in treating diseases with chronopharmacological patterns.
Main Methods:
- Review of existing literature on pulsatile drug delivery technologies.
- Categorization of PDDS based on release mechanisms (time-controlled, stimuli-induced, externally regulated).
- Discussion of formulation parameters, release profiles, and available commercial products.
Main Results:
- PDDS offer precise control over drug release, independent of physiological conditions.
- Various system designs, including capsular, osmotic, and polymer-coated units, are discussed.
- Commercial products like Pulsincap®, OROS®, CODAS®, and Pulsys® demonstrate the feasibility of pulsatile delivery.
Conclusions:
- Pulsatile drug delivery systems are advantageous for drugs requiring specific release profiles, such as those with chronopharmacological behavior or first-pass metabolism.
- PDDS show promise for treating conditions like asthma, cardiovascular diseases, and arthritis.
- The development of PDDS represents a significant advancement in targeted and efficient pharmacotherapy.
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