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....
That is great!
I have used worm medicine and corid. I have not used corid in several years now though. I was told by the UCD necropsy place that I would need to vaccinate against mareks because one of my hens died of mareks cancer. I ignored that and have not had any trouble with mareks.
I use BOB and purina chicken feed. I do have some stuff with oregano oil in it but I have not given it to them in a while. I will likely use it soon though--we are moving into the hot time of the year. Last year we had four week long heat waves over 105. They hottest day was 111 last summer. We rarely have highs under 85 in the summer and that takes a lot out of them(and me of course). I still drink coffee though!