Pharmaceutical composition for rapid suspension in water
US5306506A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1992 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Mar 3, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2275/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provides a solid pharmaceutical composition for addition to water to produce a suspension of a drug comprising (a) a drug which is substantially water-insoluble or microencapsulated; (b) a thickening or suspending agent; (c) a pharmaceutically acceptable acid; (d) a pharmaceutically acceptable carbonate or bicarbonate; characterised in that the weight ratio of c+d:b is from 1:1.5 to 1:15 and the amount of c+d is sufficient to obtain rapid hydration of the thickening or suspending agent (b) when the composition is mixed with water such that a homogeneous suspension of the drug is obtained within 30 seconds. A method for preparing the composition is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.