Pharmaceutical formulation comprising omeprazole

US6428810B1 · kind B1 · utility

Assignee

• ASTRAZENECA AB · SE

Inventors

• Pontus John Arvid Bergstrand · Gothenburg, SE
• Peter X. Wang · Chesterfield, US

Key dates

• Filing date: Feb 4, 2000
• Grant date: Aug 6, 2002
• Expiry date: Feb 4, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K9/5047
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

An enteric coated oral pharmaceutical formulation comprising as active ingredient a compound selected from the group of omeprazole, an alkaline salt of omeprazole, one of the single enantiomers of omeprazole and an alkaline salt of one of the single enantiomers of omeprazole, wherein the formulation comprises a core material that comprises the active ingredient and optionally an alkaline reacting compound, the active ingredient is in admixture with a pharmaceutically acceptable excipient, such as for instance a binding agent, and on said core material a separating layer and an enteric coating layer. A hydroxypropyl cellulose (HPC) with a specific cloud point is used in the manufacture of the claimed pharmaceutical formulations. Furthermore, the application describes the processes for their preparation and the use of the claimed formulations in medicine.