Quantity purchases . Inquire whether buying more than one bottle of insulin at a time would be cheaper than buying it by the bottle. Of course, keep the expiration date in mind. On the rare occasion that insulin lots must be recalled, check to see if the control number on any of your bottles matches that of the recalled lot. It does pay to shop around for your insulin.
Prices can vary by several dollars a bottle depending on where they're sold.
Although manufacturers recommend storing your insulin in the refrigerator, injecting cold insulin can sometimes make the injection more painful. To counter that, some doctors recommend storing the bottle of insulin you are using at room temperature. Most doctors believe that insulin kept at room temperature will last a month or so. Then, take out the bottle ahead of time so it is ready for your next injection. Do not store your insulin at extreme temperatures.