Patent ID: 11857684
Assignee: BAYER AKTIENGESELLSCHAFT
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 13:
14. A method for preparing a bilayer tablet according to claim 1, comprising:
compacting and milling acetylsalicylic acid, sodium carbonate, and colloidal silicon dioxide to provide granules;
combining the granules with acetylsalicylic acid, cornstarch, powdered cellulose, and colloidal silicon dioxide to provide an acetylsalicylic acid blend;
combining pseudoephedrine or a pharmaceutically acceptable salt thereof, cornstarch, mannitol, sodium carbonate, microcrystalline cellulose and colloidal silicon dioxide to provide a pseudoephedrine blend; and
compressing the acetylsalicylic acid blend and pseudoephedrine blend to form the bilayer tablet.