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

Claim 0:
1. A bilayer tablet, comprising:
an acetylsalicylic acid layer, comprising:
granules, wherein the granules comprise intragranular acetylsalicylic acid, intragranular sodium carbonate, and one or more intragranular excipients;
extragranular acetylsalicylic acid; and
one or more extragranular excipients; and

a pseudoephedrine layer, comprising:
pseudoephedrine or a pharmaceutically acceptable salt thereof;
sodium carbonate; and
one or more excipients;

wherein 10-50% w/w of the total acetylsalicylic acid present in the tablet is intragranular acetylsalicylic acid, and
wherein the tablet has a weight ratio of the acetylsalicylic acid to sodium carbonate of between 1:1 and 5:1.