What does the medicated feed do for your chickens ? Is it really healthy to give it, I prefer to give no chemicals to my flock, but I want them to be healthy too. Over the past few months I have lost 3 , just lost one today, my heart was broke and I felt helpless, I couldn't do anything for her except hold her. They just go for no reason, I don't understand why, they aren't old, am I not doing something for them ? The flock is active, laying eggs, free ranging, seem content. It's hard to figure out, anyone have an answer ?