The purpose of the present invention is to provide micro- or mili-capsules
and film preparations having not only sustained-release function but also
targeting and adhesive functions with approximately 100% loading
efficiency of the objective substance. The present invention provides a
parenteral preparation having three layers structure of; basement layer
composed of polymer; carrying layer that contains objective substances
selected from drugs, aroma chemicals, mosquito propellant, dyes, cells or
antigens; and surface layer, and in which the carrying layer is
sandwiched between the basement layer and the surface layer.