Oral preparations comprising S-(3-hydroxypropyl)-L-cysteine
US6441040B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1998 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Oct 21, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P11/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A preparation for oral administration which comprises S-(3-hydroxypropyl)-L-cysteine and one or more excipients, where the excipients do not cause discoloration of S-(3-hydroxypropyl)-L-cysteine is disclosled. According to an embodiment of the invention, the excipient may comprise a starch and/or a cyclodextrin. Typical starches used in the invention include corn starch, potato starch, wheat starch, and rice starch. Typical cyclodextrins used in the invention include &agr;-cyclodextrin, &bgr;-cyclodextrin, and &ggr;-cyclodextrin. Other excipients, such as saccharides, sugar alcohols and cellulose are not present in amounts that cause discoloration of the HPCY.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.