Rapid acting injectable insulin compositions

摘要

Injectable insulin formulations with improved stability and rapid onset of action are described herein. The formulations may be for subcutaneous, intradermal or intramuscular administration. In the preferred embodiment, the formulations are administered via subcutaneous injection. The formulations contain insulin in combination with a chelator and dissolution agent, and optionally additional excipients. In the preferred embodiment, the formulation contains human insulin, a zinc chelator such as EDTA and a dissolution agent such as citric acid. These formulations are rapidly absorbed into the blood stream when administered by subcutaneous injection. In the preferred embodiment, the insulin is provided as a dry powder in a sterile vial. This is mixed with a diluent containing a pharmaceutically acceptable carrier, such as water, a zinc chelator such as EDTA and a dissolution agent such as citric acid shortly before or at the time of administration. In another embodiment, the insulin is stored as a frozen mixture, ready for use upon thawing.

主权项

1. An injectable insulin composition comprising an active agent and an effective amount of a dissolution agent and a zinc chelator to dissociate and charge mask the insulin to enhance uptake and transport of the insulin through epithelial cells as compared to insulin in combination with a zinc chelator and HCl,
wherein the active agent consists of insulin hexamers dissociated by the zinc chelator, wherein the dissolution agent is selected from the group consisting of glutamic, succinic, aspartic, maleic, fumaric, and adipic acid, and wherein the zinc chelator is selected from the group consisting of ethylenediaminetetraacetic acid (EDTA), ethylene-bis(oxyethylene nitro) tetraacetic acid (EGTA), dimercaptosuccinic acid (DMSA), and CDTA (1,2-diaminocyclohexanetetraacetic acid), alone or in combination with ions of a metal.