Powder-layered morphine sulfate formulations
US5411745A · kind A · utility
265Cited by
11References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 1994 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | May 25, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/485
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An oral dosage form of morphine is formulated by powder-layering an homogeneous mixture of morphine sulfate and hydrous lactose impalpable onto inert beads to obtain a multiparticulate product. A plurality of the powder-layered beads may be administered either in immediate release form or in an extended release form by coating with a hydrophobic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.