Mixtard 30HM Penfill 3ml (5-pack) is a premixed insulin that contains 30% regular insulin (short-acting) and 70% insulin isophane (intermediate-acting). It is used to manage blood sugar levels in people with diabetes, offering both quick and sustained effects. The 3ml cartridges are designed for use with insulin pens, providing an easy and accurate way to administer insulin. The 5-cartridge pack ensures a convenient supply for ongoing diabetes management.