I have some saved.
Got a full bottle of amoxicillin from a prescription that I never used.
Also got a bottle of Doxycycline and a similar antibiotic from the vet. It was a mixup. Didn’t realize it til I got it home that it was meant for someone else. Call in and went and picked up the right prescription but got to keep the doxy.
I wrap them in ziplocks and squeeze out all the air to protect them from humidity and oxidation. Keep them in a dark cool place. They should last a lot longer than the label indicates.
“Also got a bottle of Doxycycline”
Just a heads up; most antibiotics won’t hurt you if they are expired. They may not be as effective. The -cyclines, though, could be problematic. You might want to do some research on those before taking them if they’re expired.