Does Semaglutide Expire After 28 Days?

People repeat '28 days' because certain multi-dose sterile products are assigned short beyond-use dates under pharmacy standards. That is a real rule for those containers. It is not a universal fact about every semaglutide product on earth.

Read your label. If it says a date, that date is the instruction. If you are past it, you do not stretch it because the vial is not empty.

Discard what you were told to discard and contact the coordinator for a refill. Do not combine leftovers from two vials to 'finish the month.'

A missed window is annoying. An infection or a dose you cannot trust is worse. The clinician would rather hear about the waste than discover it later in a side-effect story.

Does the clock start when I open it or when it was made?

The label tells you. Some dates are from puncture, some are a fixed beyond-use date. Do not invent the start.

Can I use it if it looks clear but is past the date?

No. Looks are not a sterility test.