Topical compositions for prostaglandin E.sub.1 delivery
US6046244A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1997 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Nov 5, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/183
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A topical composition of a semi-solid consistency suitable is provided for transdermal application of prostaglandin E.sub.1. The composition comprises prostaglandin E.sub.1, a penetration enhancer, a polysaccharide gum, a lipophilic compound, and an acidic buffer system. The penetration enhancer is an alkyl-2-(N,N-disubstituted amino)-alkanoate ester, an (N,N-disubstituted amino)-alkanol alkanoate, or a mixture of these. The lipophilic compound may be an aliphatic C.sub.1 to C.sub.8 alcohol, an aliphatic C.sub.8 to C.sub.30 ester, or a mixture of these. The composition includes a buffer system capable of providing a buffered pH value for said composition in the range of about 3 to about 7.4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.