Details for Patent: 6,264,980

Title:	Transdermal resorption of active substances from supercooled masses of levulic acid
Abstract:	A pharmaceutical product for the release of medicinal agents to the skin having absorption-increasing auxiliary agents is characterized in that the auxiliary material forms subcooled melts.
Inventor(s):	Hille; Thomas (Neuwied, DE)
Assignee:	LTS Lohmann Therapie-Systeme GmbH (Neuwied, DE)
Filing Date:	Nov 07, 1997
Application Number:	08/860,961
Claims:	1. In a drug composition for the release of a medicinal agent to the skin which comprises a medicinal agent and at least one auxiliary agent having an absorption-increasing effect, the improvement wherein the auxiliary agent having an absorption-increasing effect is levulic acid in a subcooled melt. 2. A drug composition for the release of a medicinal agent to the skin which comprises a medicinal agent and at least one auxiliary agent having an absorption increasing effect, wherein the auxiliary agent having an absorption increasing effect is levulic acid and the medicinal agent is buprenorphine base. 3. In a drug composition for the release of a medicinal agent transdermally which comprises a medicinal agent and at least one auxiliary agent having an absorption increasing effect, the improvement wherein the auxiliary agent having an absorption-increasing effect is levulic acid in a subcooled melt. 4. A drug composition for the release of a medicinal agent transdermally which comprises a medicinal agent and at least one auxiliary agent having an absorption increasing effect, wherein the auxiliary agent having an absorption-increasing effect is levulic acid and the medicinal agent is buprenorphine base.