A container for housing an injectable fluid vial. The container includes a calculation aid formed specific to the injectable fluid vial. The container is formed from a bottom, a top, and an inset side wall therebetween with a resealable lid. The top includes an opening constructed and arranged to receive the fluid vial housing. Alternatively, the container is formed from two half sections that are hinged together for holding the fluid vial housing therebetween. An inner label is permanently attached to the sidewall having at least one row of dosing indicia coordinated with a base line indicia selected from the group of weight, age, fluid volume or area. An outer label is rotatably secured over said inner label with at least one transparent window allowing selective viewing of the dosing and base line indicia and predetermined dosing rate.