Tresiba expiration?

It sounds like you’re asking about Tresiba (insulin degludec) expiration—how long it lasts and when it must be thrown out. Here are the key rules (note: always follow the label on your specific pen/vial and any instructions from your pharmacy).

1) Check the expiration date on the package

• Use the “EXP” date printed on the box and pen/vial for unopened product.
• If it’s past that date, don’t use it.

2) After opening (in-use) — typical guidance

Tresiba pens/vials after first use are usually good for:

• Up to 8 weeks (56 days) when stored at room temperature or in use, depending on local labeling/dispensing practices.

Because different countries sometimes publish slightly different “in-use” timeframes, please tell me:

• Are you using a FlexTouch pen or a vial?
• What country are you in (or the exact wording on your label)? …and I can match the answer to your label precisely.

3) Storage affects expiration

• Don’t freeze it.
• Don’t use if the insulin was frozen.
• Protect from excessive heat/light.

Unopened

• Usually kept refrigerated (and not frozen) until the printed expiration date.

In use (opened)

• Commonly stored at room temperature for the in-use period, and sometimes can be refrigerated—again, confirm based on your label.

4) How to tell if it’s gone bad

Tresiba is typically a clear, colorless solution.

• Do not use if it looks cloudy, colored, or has particles (unless your product description says otherwise—Tresiba should be clear).

5) Practical safety note

If you’re unsure whether it’s still good, it’s safest to call your pharmacist or check the specific package insert.

If you share what you have (pen vs vial) and when you first opened it (and your country/label details), I’ll tell you the exact likely expiration window.