The Prodigy Count-a-dose is a simple way to fill insulin syringes safely and accurately with one or two bottles of insulin (any brand). The bottle holder is marked to identify bottles for easy mixing - one raised dot for the first bottle and two for the second bottle. With the click dial starting all the way down toward the raised tactile minus sign, the user simply moves the click dial the number of times, or clicks, per unit of insulin needed. Each click of the dial toward the plus sign will draw one unit of insulin into the syringe.