Transdermal therapeutic formulation and a method of administration thereof
US5744162A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1992 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Aug 13, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/32
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A transdermal therapeutic formulation is made of a composition comprising a polymer and ingredients mixed with the polymer which are a pharmacologically active substance, an alcohol, a percutaneous absorption promoter utilized according to necessity and water utilized according to necessity. The polymer comprises lipophilic monomer units and hydrophilic monomer units in a specific ratio. The alcohol, the percutaneous absorption promoter and water are mixed with the polymer in specific amounts. The transdermal therapeutic formulation has excellent percutaneous absorption, has many kinds of applicable pharmacologically active substances, shows good stability of percutaneous absorption with time because of absence of crystallization of the pharmacologically active substance, has good adhesive strength and thus favorably utilized as transdermal therapeutic plaster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.