Ok, I drove to my feed store to buy the Kent feed that I have been feeding my chicks and they are out for a week or so. No other feed store carries it, and I am down to less than one feeding's worth of chick food. So, I had to go to another feed store and buy a different brand of food. Here is my question. I was using Kent chick starter, which is medicated with Amprolium and nothing else. I had to buy Nutrena NatureWise Chick Starter/Grower which is medicated with Amprolium AND Ethopabate. I have nine 8-week olds, four 4-5 week olds, and five 2 1/2 week olds. The starter I bought said to keep them on it until they begin to lay, so I could feasibly do that. BUT, I'm just concerned about the second type of medicine in this new food. Is it ok to put them on it now?