I am diabetic person. Dr. has asked me to use insulin which started 2 days back. However I did not know much about storage of insulin pen. I used for the first time and then stored it in freezer. Then I come to know through internet that once stored in freezer insulin breaks down and become ineffective. Is it true? Because I also experience now that my blood sugar spiked even after using insulin. Also pls tell me the procedure of storing insulin pen? Can I store the pen in room temperature after using for the very first time. Pls tell me in detail. Thank you.