My sister uses Medco to save on co-pays. She can get a three month supply of my niece's insulin and save on copays, though they will only ship out 600 strips at a time, no matter what the endo's prescription is, so she has to pay more copays for strips. We received warm insulin and Medco did agree to take it back and send us fresh. However, in the process of doing this, we were told that "due to a study by the Veteran's Administration showing that insulin is effective even if it comes to room temperature during shipping (their words, more than one person)" Medco will no longer deliver next day delivery. Period. Except in an emergency. I feel uncomfortable about this policy, as there are no exceptions, even for the hot summer months. Has anyone else experienced problems? P.S. We were out of town and called Medco to put a hold on the order (it had not yet shipped). We then called Medco two days ago, just to check and told them no one would be home to receive the insulin. They did agree to take the insulin back, but kept mentioning that lukewarm insulin was probably okay as they had shipped it a two and a half days ago and studies have shown insulin can stay at lukewarm temps for a short period of time.