Abstract: A system of color-coded vial caps, with tactile raised symbols on top, to help diabetic patients, even visually impaired patients, or their care providers distinguish between insulin types. The system is comprised of six different vial caps, all the same size, with the tops of the caps having distinctive tactile markings designed to correspond to the six types of insulin currently on the market. In addition, the six types of caps each have a distinct color. The IDD patient or their care giver can attach the color-coded, tactile marked cap to the corresponding insulin vial making the insulin vial more distinguishable from another vial containing a different type of insulin.