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A novel multi-unit tablet for treating circadian rhythm diseases
1Pharmaceutical Research Institute, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, China.
AAPS Pharmscitech
|May 8, 2013
Summary
This study developed a novel multi-unit tablet for circadian rhythm diseases, featuring a 4-hour lag time and 4-hour sustained release. This innovative drug delivery system offers improved treatment options.
Area of Science:
- Pharmaceutical Sciences
- Drug Delivery Systems
- Chronopharmaceutics
Background:
- Circadian rhythm diseases require precise drug delivery timing.
- Current treatments may lack optimal pulsatile and sustained release profiles.
- Novel dosage forms are needed to improve therapeutic outcomes.
Purpose of the Study:
- To develop and evaluate a novel multi-unit tablet combining sustained-release pellets and pulsatile-release coatings.
- To investigate the drug release characteristics of the developed dosage form.
- To assess the potential of this system for treating circadian rhythm diseases.
Main Methods:
- Microcrystalline cellulose (MCC)-based pellets were coated with Eudragit(®) NE30D for sustained release.
- Coated pellets were compressed with cushion agents and further coated with isolation, swellable, and rupturable layers.
- Central-composite design-response surface methodology was employed to optimize coating parameters.
- Drug release studies and scanning electron microscopy (SEM) were utilized for characterization.
Main Results:
- The developed multi-unit tablet exhibited a pulsatile dissolution profile.
- A significant lag period of 4 hours followed by a sustained-release phase of 4 hours was achieved.
- SEM analysis confirmed the integrity and morphology of the coated pellets and tablets.
Conclusions:
- The novel multi-unit tablet successfully achieved a 4-hour lag time and 4-hour sustained release.
- This dosage form demonstrates potential as an improved therapeutic option for circadian rhythm diseases.
- The combination of sustained and pulsatile release offers a promising approach for chronotherapy.
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