Thanks.
You can also buy bulk tetracycline at farm supply stores, generally labelled Agri-mycin or Terra-mycin.
Farms supply stores usually have aqueous penicillin for injection, and something you can’t get at Wally World.
Anti-tetanus injectible anti-toxin.
Tetra cycline is one antibiotic that DOES have shelf life. becomes TOXIC after time. the rest do not. warning on this one