Insulin pens with memory (using Sanofi penfills in Novo Nordisk pens)
For basal, I use prefilled Abasaglar pens, with a Timesulin cap. These caps are somewhat overpriced at $20 bucks, but worth it. They only remember last time of insulin injection, not dosage. For my basal insulin, this is fine, because I use only a single dosage every day. For bolusing, I use Apidra. I need to know both the last time I took insulin, and the dose. For this, I use the Novo Nordisk echo pen. It is not supposed to be compatible with Sanofi insulin penfills, but the latter are easy to adjust so they fit a Novo Nordisk pen. Novo Nordisk and Sanofi penfills differ in 3 ways: Novo Nordisk penfills 1) are very slightly thinner; 2) have an orange plastic cap; 3) are very slightly longer. To make the Sanofi penfill into a Novo Nordisk one: 1) Make the Sanofi penfill slightly thinner by peeling of the label. 2) Twist off the orange plastic cap from a Novo Nordisk penfill, place it on the Apidra penfill. 3) Place a small ring in the Echo pen, at the back of the Sanofi penfill, t
