# Expired Tresiba **URL:** \ **Category:** Type 1 & LADA\ **Tags:** insulin\ **Created:** [October 16, 2021, 9:23pm UTC](https://forum.fudiabetes.org/t/expired-tresiba/11943 "2021-10-16T21:23:42Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![lh378](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/lh378/32/601_2.png) [@lh378](https://forum.fudiabetes.org/u/lh378)\ **Post date:** [October 16, 2021, 9:23pm UTC](https://forum.fudiabetes.org/t/expired-tresiba/11943/1 "2021-10-16T21:23:42Z")
Has anyone used expired Tresiba that have been kept in the refrigerator? It would seem like a waste to throw them away. Expired Novolog works fine. Novolog that has been “opened” for more than 30 days work too. ---
**Author:** ![bostrav59](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/bostrav59/32/7281_2.png) [@bostrav59](https://forum.fudiabetes.org/u/bostrav59)\ **Post date:** [October 18, 2021, 4:50pm UTC](https://forum.fudiabetes.org/t/expired-tresiba/11943/2 "2021-10-18T16:50:58Z")
There’s been a lot of very useful discussion on this topic in the boards - here’s one reference > [@The great unrefrigerated (& expired) insulin demo](https://forum.fudiabetes.org/t/the-great-unrefrigerated-expired-insulin-demo/5132): > > The long-time Unlimiteds have already seen this kind of stuff. But for newer members, I wanted to share it with a new demo. I am calling this a “demo” instead of an “experiment”, because really by now, there is no more experimenting. I know what is going to happen, I am just trying to show it. Perhaps you recall this one from last year: [car-baked-insulin-an-experiment-for-irish](https://forum.fudiabetes.org/t/car-baked-insulin-an-experiment-for-irish/1188) That was a fun thread! And it was a little bit different, it was in a hot car in the summer for 4 days. But since … Now I don’t know if Tresiba is explicitly addressed on this topic, but it might well have been. Good luck! ---
**Author:** ![Chris](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/chris/32/382_2.png) [@Chris](https://forum.fudiabetes.org/u/Chris)\ **Post date:** [October 18, 2021, 8:27pm UTC](https://forum.fudiabetes.org/t/expired-tresiba/11943/3 "2021-10-18T20:27:20Z")
I think we know through experimentation that Novolog and Humalog are really really robust and work fine in an expired state. I know through experimentation that Lantus worked fine for us expired. But I don’t recall anyone testing Tresiba. You willing to the guineapig? Would be cool data to provide to the community. Something like test it once per quarter starting at expiration… ---
**Author:** ![lh378](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/lh378/32/601_2.png) [@lh378](https://forum.fudiabetes.org/u/lh378)\ **Post date:** [October 18, 2021, 8:32pm UTC](https://forum.fudiabetes.org/t/expired-tresiba/11943/4 "2021-10-18T20:32:10Z")
I have one pen that is expired by one month. It seems to be fine.