I have to chime in here. I think some of the problem may be the word "medicated". There is a tendency when we hear that word to think antibiotic. But it's my understanding that medicated feed contains a thiamine blocker. Please tell me if I am wrong. We haven't had antibiotics in our house since my daughter ws a baby and constantly getting ear infections and the DR. Wanted to put her on maintenance antibiotics but since I saw that she was always having trouble with the antibiotics we refused and I started digging into natural and homeopathic remedies. Within a short period all ear infections gone. ACV and alcohol was all it really took. That was 15 years ago. I'm not saying all antibiotics are bad but they should not be a first resort and never a preventative. Used the way they are now days they cause germs to be worse than they should be and then we start a cycle of needing stronger meds and higher doses. Our goal should be to build healthy immune systems and only use antibiotics when absolutely necessary. This goes for my animals as well as my family.