If the needle is left on, insulin may leak from the Pen, insulin may dry inside the needle causing the needle to clog, or air bubbles may form in the cartridge. • Refer to the Information for the package leaflet for complete insulin storage instructions. • After first use the pen should not be used beyond the time specified in the insulin package leaflet Dispose of used needles in a puncture-resistant container or as directed by your healthcare professional. • Dispose of used Pens as instructed by your healthcare professional and without the needle attached. • Keep the Pen out of the reach of children.