A Doctor's Thoughts on Antibiotics, Expiration Dates, and TEOTWAWKI, by Dr. Bones
""Studies performed by the Food and Drug Administration (FDA) revealed that 90% of medications tested were perfectly fine to use 8-to-15 years after the expiration date. "
I've gotten my antibiotics at CalVet Supply for years without any problems.
Yes, I have some that I got for dogs at the local co-op. I haven’t ever used antibiotics for myself or my kids - not sick much and just weathered through it.
But, if the SHTF - I suppose I could try them.