Question about Lantus

This is probably a dumb question, but here goes. How long would you feel comfortable using an opened vial of Lantus once it is opened? I use a pump currently, but have some plans where I want to be off the pump for a day at a time . I really hate wasting insulin, but also know that the recommendation is to pitch it after 28 days. What do others do for the occasional no pump days?

This is a perennial topic of discussion. In general, insulin can last much longer than what the manufacturers say. It depends very much on how it’s stored and where, of course. but those date ranges are generally very conservative. We’ve had a lot of discussion here on this subject, and many people find that insulin can remain effective for a lot longer than the guidelines say. In my case, for example, I keep all my insulin refrigerated all the time, opened or not. It’s not at all uncommon for a vial to last me close to 90 days.

Everyone’s experience is different, of course, but the rule of thumb is that you can usually do better—often considerably better—than we’re told.

Thank you, David. I refrigerate mine all the time also. I guess it’s just another experiment to do.

I keep and use open lantus for 90 days while refrigerated. My doctor advises it can be used for up to 6 months. But at 90 days I find the lantus tends to lose its action.

Thank you for taking the time to answer. This makes me not feel so wasteful for a time off of the pump.

I use 6.5 units of Lantus daily. I think I purchase 2 bottles per year. Lantus always stays in my fridge. It seems to be effective for 6 months for me

Thank you. From your responses, I feel comfortable keeping Lantus past the 28 days.

I keep then refrigerated and for lantus 90 days is a safe time.

Thank you for your reply.