Colonic drug delivery system
US5536507A · kind A · utility
108Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Jun 24, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/1635
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A three component pharmaceutical formulation of one or more pharmacologically active substances such that greater than 80% of the pharmacologically active substance will be released in the large intestine. The first component comprises the pharmacologically active substance, microcrystalline cellulose, a pH-sensitive polymer, and optionally an osmotic agent. The second component is a delayed release coating, and the third component is an enteric coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.