Abstract: A disposable syringe plunger immobilizing device includes first and second hollow members, a means for connecting the first and second hollow members to one another, and a means for holding the first and second hollow members in contact with one another. When in contact with one another, the first and second hollow members contact a syringe plunger and the main body of the syringe to hold the syringe plunger in place in a bore of the main body of the syringe, so that movement of the syringe plunger relative to the main body of the syringe is inhibited. In this fashion, the syringe may be preloaded with a medicament and then safely transported without loss of the medicament within the syringe until the syringe is used. The disposable syringe plunger immobilizing device may be manufactured in different sizes to accommodate various syringe sizes and volumes of medicament to be injected and colors to assist in identification of the various sizes of the device.