Pharmaceutical tablet characterized by a showing high volume increase when coming into contact with biological fluids
US5780057A · kind A · utility
139Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1997 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Feb 14, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2086
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A description is given of a pharmaceutical form for oral administration consisting of a two- or three-layers tablet, wherein at least one layer can rapidly swell by contact with biological and/or aqueous fluids, said swelling resulting in a considerable increase in the tablet volume. Said phenomenon determines a prolonged residence of the pharmaceutical form at the gastric level and therefore allows a slow release of the active ingredient from said pharmaceutical form to the stomach and/or the first tract of the intestine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.