Jack's-Jane
Wise Old Thumper
It could have been an injectable NSAID? :?
Well they wont last 10 days :?
Metacam would be cleared in 24 hours
Carprofen about the same I think.
If the Vet says its an allergy then I suspect he gave a steroid which would last 7-10 days. Hence Vet said come back in 10 days. If Molly has had a steroid and is not on abx she is now at much greater risk of infection in her hocks.
Just my unqualified opinion