Well, there is some good news if you like to eat chicken and turkey Sally.

Did you know that Cipro was regularly fed to chickens and turkeys that were destined for your plate until 2005?

Who knows what medications livestock are routinely being fed these days, but it seems reasonable to conclude that those who are allergic to certain medications may have reactions to consuming meat or dairy products from animals that have been medicated with what they are allergic to.

Years ago when we had a small organic dairy, we sometimes did need to use antibiotics on the cows and goats that developed mastitis or abcesses. Of course the affected animals were then isolated from the herd and their milk was dumped; but I wouldn't be so sure that is the case in larger operations.

Agricultural Use of Antibiotics Prompts Human Health Concerns
http://www.medscape.com/viewarticle/520518

With love, Erika