Modified release formulations of at least one form of tramadol
US8158147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2007 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Sep 18, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P29/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a modified release composition of at least one form of tramadol which is a delayed and extended release composition for oral administration suitable for once daily dosing. That composition comprises a core comprising at least one form of tramadol selected from the group consisting of tramadol, racemic mixtures thereof, enantiomers thereof, pharmaceutically acceptable salts thereof, and combinations thereof in combination with a pharmaceutically acceptable excipient. That composition further comprises a modified release coating which substantially surrounds said core. The compositions of the invention provide delayed and extended release of said at least one form of tramadol such that the mean plasma concentration of the at least one form of tramadol reaches a therapeutically effective level at a time which is after at least about 3 hours after first administration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.