Stabilized insulin preparations
First Claim
1. An insulin solution suitable for use in continuous insulin delivery characterized by being physically stable under conditions for such delivery optionally, comprising a preserving agent, an agent rendering the solution isotonic, and a pH-buffering agent, which solution contains essentially ionized zinc in a concentration corresponding to a content of zinc ions at the disposal of the insulin of more than 4 Zn2+ /hexamer insulin but below the limit for Zn insulin precipitation.
1 Assignment
0 Petitions
Accused Products
Abstract
Novel pharmaceutical solutions of dissolved insulin having improved physical stability prepared by incorporating therein an essentially ionized zinc salt in a concentration corresponding to a content of zinc ions at the disposal of the insulin of more than 4 Zn2+ /hexamer insulin preferably 4.2-4.5 Zn2+ /hexamer insulin. The solutions exhibit a stability factor exceeding 5.
The novel insulin solutions are particularly adapted for use in continuous insulin delivery equipment.
63 Citations
16 Claims
- 1. An insulin solution suitable for use in continuous insulin delivery characterized by being physically stable under conditions for such delivery optionally, comprising a preserving agent, an agent rendering the solution isotonic, and a pH-buffering agent, which solution contains essentially ionized zinc in a concentration corresponding to a content of zinc ions at the disposal of the insulin of more than 4 Zn2+ /hexamer insulin but below the limit for Zn insulin precipitation.
-
16. A method for producing an insulin solution suitable for use in continuous insulin delivery for being physically stable under delivery conditions, optionally, comprising a preserving agent, an agent rendering the solution isotonic, and a pH buffering agent, which method comprises incorporating into said insulin solution an essentially ionized zinc salt in concentration corresponding to a content of zinc ions at the disposal of the insulin of between 4 and 5 Zn2+ /hexamer insulin.
Specification