corid is not an anti biotic and has worked well for me. Corid is not on the list of meds that need to have a prescription.
Have you looked into vaccinating for cocci
No, I want to avoid all vaccinations and medications. I want the birds to be chemical free. Whether I need a prescription or not makes no difference to me. I am trying to raise mine as close as I can to like they did 200 years ago. Except for the heat lamps, MHP, Incubators and stuff....