| 摘要 |
The present invention addresses the problem of providing a microneedle preparation whereby an object substance can be released in sustained fashion from a microneedle, and a microneedle portion inserted into skin can be separated from a support without the need for applying a pulling force to the support. In order to solve this problem, the present invention is a microneedle preparation having a first portion which is provided with a top part and includes a water-insoluble biodegradable polymer substance and an object substance dissolved or dispersed in the polymer substance, and a second portion which is provided with a base part and includes a water-soluble substance dissolved in a solvent capable of dissolving the water-insoluble biodegradable polymer substance. |
