Patent ID: 6039974
Filing Date: 2000-03-21
Classification: A61K,A61P,Y10S

Abstract:
A pharmaceutical composition in the form of a bilayer tablet comprising,(a) a first discrete zone made with Formulation (A) which comprises, a therapeutically effective decongestant amount of a sympathomimetic drug, or a pharmaceutically acceptable salt thereof, in an amount of about 18% to about 39% by weight of Formulation (A), and a first carrier base material, the first carrier base material comprising a mixture of;(I) carnauba wax in an amount of about 59% to about 81% by weight of Formulation (A); and(ii) a suitable antiadherent in an amount of about 0.25% to about 2.00% by weight of Formulation (A);wherein said first carrier base material provides a sustained release of the sympathomimetic drug; and(b) a second discrete zone made with Formulation (B) which comprises a therapeutically effective antihistaminic amount of a piperidinoalkanol, or a pharmaceutically acceptable salt thereof, in an amount of about 15% to about 30% by weight of Formulation (B) and a second carrier base material, the second carrier base comprising a mixture of;(I) a cellulose diluent in an amount of about 27% to about 73% by weight of Formulation (B);(ii) pregelatinized starch in an amount of about 15% to about 30% by weight of Formulation (B);(iii) a suitable disintegrant in an amount of about 0.25% to about 6.00% by weight of Formulation (B); and(iv) a suitable lubricant in an amount of about 0.25% to about 2.00% by weight of Formulation (B);wherein said second carrier base material provides an immediate release of the piperidinoalkanol or the pharmaceutically acceptable salt thereof.