Valaciclovir tablets containing colloidal silicon dioxide
US5879706A · kind A · utility
16Cited by
1References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Aug 29, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/22
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A tablet comprising at least 50% w/w valaciclovir and 0.05 to 3% w/w colloidal silicon dioxide in which the valaciclovir is present within granules of the tablets and the silicon dioxide, a lubricant and a microcrystalline cellulose filler are present extragranularly has excellent hardness and friability properties while still maintaining lubrication of the tablet granules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.