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Statistical comparison of high-shear versus low-shear granulation using a common formulation.
1Merck Research Laboratories, West Point, PA 19486, USA.
Drug Development and Industrial Pharmacy
|March 30, 2000
Summary
Tablet hardness is influenced by mixer type during granulation, while drug dissolution remains unaffected. This study optimized tablet properties by varying key formulation and process factors.
Area of Science:
- Pharmaceutical Sciences
- Materials Science
Background:
- Optimizing tablet properties is crucial for drug efficacy and patient compliance.
- Granulation is a key process step in tablet manufacturing, influencing final product characteristics.
Purpose of the Study:
- To investigate the impact of various independent factors on tablet properties.
- To determine the influence of mixer type (low-shear vs. high-shear) on tablet characteristics during granulation.
Main Methods:
- Experimental design was employed to study combinations of factors including calcium phosphate/mannitol ratio, pregelatinized starch, magnesium stearate, mixer type, and compression pressure.
- Two mixer types, a low-shear planetary mixer and a high-shear mixer, were utilized for granulation.
- Factors were varied across a range of -2 to +2 experimental units, with mixer type assigned specific values (-1 for planetary, +1 for high-shear).
Main Results:
- Drug dissolution was not significantly affected by the type of mixer used.
- Tablet hardness was found to be influenced by the mixer type, indicating a differential impact on mechanical properties.
Conclusions:
- Mixer type plays a significant role in determining tablet hardness during the granulation process.
- While drug dissolution remains consistent, the selection of granulation equipment can be optimized to achieve desired tablet mechanical strength.
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