Modified-release metronidazole compositions and methods for making and using same
US6103262A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1994 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Jan 27, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Pharmaceutical compositions having a modified release profile for once daily dosing of metronidazole, methods for making the pharmaceutical compositions, and methods for treating a microbial infection with once daily dosing of the pharmaceutical compositions of the invention are provided. The compositions given once daily exhibit substantial bioequivalence to immediate release metronidazole given three times per day. The compositions of the invention comprise: (a) a first portion of metronidazole which is about 59 wt % to about 79 wt % metronidazole; (b) about 1.5 wt % to about 3.0 wt % of an aqueous insoluble poly(meth)acrylic acid ester copolymer which is aqueous permeable, aqueous expandable and pH-independent; (c) about 0.1 wt % to about 2.0 wt % detackifier; (d) 0 to about 23 wt % of a first aqueous soluble pharmaceutical diluent; (e) 0 to about 23 wt % of a second aqueous soluble diluent which is suitable for forming a pharmaceutical tablet when compressed with the granules of (a), the second aqueous soluble diluent being the same as or different from the first aqueous soluble diluent; (f) 0 to about 20 wt % of a second portion of metronidazole; (g) 0 to about 0.2 wt % glidan…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.