The Control of Drug Release from Conventional Melt Granulation Matrices

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Abstract
Sustained release potassium chloride tablets were prepared using a melt granulation formulation in a Baker Perkins Granulator. Parts of the validation for this manufacturing process are highlighted in this paper including granulation end point temperature, incorporation of extragranular excipients, amount of wax in the formulation, granule cooling rate and scale of the operation. A number of other factors have been studied which are not Included here although they are no less important. The release of potassium chloride from tablets was found to be dependent on the wax level and the amount of extragranular excipients (“wicklng agent”). Within the controlled production process, any variation in granulation end point temperature and granule cooling rate should not have any significant effect.

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