DISPERSANT FOR SUSTAINED RELEASE PREPARATIONS

摘要

The present invention provides a bilayer dispersing agent for a sustained-release preparation, which contains a non water-soluble solvent and an aqueous solvent, and a sustained-release preparation wherein a microcapsule containing a physiologically active substance is dispersed in the aforementioned dispersing agent. When this preparation is subcutaneously administered, the initial release of a physiologically active substance immediately after administration is strikingly suppressed, a constant amount of a physiologically active substance is released for a long period of time from immediately after administration, superior dispersibility is afforded, and the preparation can readily pass through a needle as an injection.