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Using Supercritical Fluid Technology (SFT) in Preparation of Tacrolimus Solid Dispersions
Rana M Obaidat1, Bassam M Tashtoush2, Alaa Abu Awad2
1Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan. obeidatrana@yahoo.com.
AAPS Pharmscitech
|April 27, 2016
Summary
Supercritical fluid technology (SFT) successfully prepared tacrolimus solid dispersions, significantly improving drug dissolution. Soluplus dispersions showed the best release profile, demonstrating SFT
Area of Science:
- Pharmaceutical Technology
- Drug Delivery Systems
- Materials Science
Background:
- Tacrolimus exhibits poor bioavailability due to limited solubility and dissolution.
- Enhancing tacrolimus dissolution is crucial for improving its therapeutic efficacy.
Purpose of the Study:
- To prepare tacrolimus solid dispersions using supercritical fluid technology (SFT).
- To enhance the dissolution rate and bioavailability of tacrolimus.
- To investigate the impact of polymers and processing parameters on solid dispersion properties.
Main Methods:
- Solid dispersions of tacrolimus were prepared using SFT with various polymers (Soluplus, PVP, HPMC, chitosan) and a surfactant (TPGS).
- Supercritical fluid technology (SFT) was employed for efficient and stable solid dispersion preparation.
- Physicochemical characterization included DSC, X-ray diffraction, FTIR, SEM, and in vitro drug release studies.
Main Results:
- SFT successfully prepared tacrolimus solid dispersions with significantly improved dissolution profiles.
- Soluplus dispersions demonstrated the highest cumulative release (98.76% after 24 h).
- Drug precipitation occurred in an amorphous form, except for chitosan dispersions; PVP/TPGS dispersions showed recrystallization.
Conclusions:
- Supercritical fluid technology (SFT) is an effective method for producing tacrolimus solid dispersions with enhanced dissolution.
- The choice of polymer significantly influences the dissolution rate and physical stability of tacrolimus solid dispersions.
- Processing parameters in SFT critically affect the loading efficiency and drug release characteristics.
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