u/GattoCielo

I opened my pen in december 2025, can I still use it?

I opened my pen in december 2025, can I still use it?

Hi. Yup, I know the recommendation says you should throw away the pen after six weeks or something, but I’ve got two doses left and I would hate to throw it away. I don’t know if the medicine is still good or not despite the liquid having a normal, colorless appearance. Is it too risky using a pen that’s been open for almost six months? What could happen? Thank you!

u/GattoCielo — 1 month ago