I am still confused about how a benadryl shot would keep him from getting a reaction to the vaccination? The emergency vet told me the benadryl shot lasts just as long as the oral it just works Faster. He didn't have a reaction until about 7 hours after his shot, which would be just about the time any Benadryl would be wearing off. My regular vet is supposed to call me, tomorrow... I am going to ask him that question. |