Abstract: A vial adapter includes a body having a component connection interface, a piercing member having a first end connected to the body and a second end positioned opposite the first end, with the piercing member and the body defining a fluid passageway in fluid communication with the component connection interface, and a vial securing member extending from the body. The vial securing member is configured to secure the body to a vial. The vial securing member is moveable between a first position where the vial securing member defines a first length and a first width and a second position where the vial securing member has a second length and a second width, where the first length is larger than the first width, the first length is larger than the second length, and the second width is larger than the first width.