Antitussive agent and method for making the same
US7569238B2 · kind B2 · utility
1Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2003 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Mar 27, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P11/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An antitussive agent. A composition for relieving, preventing and/or treating cough includes a sufficient amount of Cynanchi Atrati Radix extract as an active component. The effective Cynanchi Atrati Radix extract is prepared by extracting Cynanchi Atrati Radix with water, ethanol, hexane, ethyl acetate or a combination thereof. The crude extract can be further fractioned by ultrafiltration or reverse phase column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.