I was researching about wry neck because that is what I thought her problem was. I read several places that they had added selenium to the treatment. I can't direct you to any certain page, because I did not bookmark them. I read that you are suppose to use very little, because it is not good in large amounts. It can cause toxicity. I was just reading anything I could, because I wanted to help the little thing. I actually did not have the selenium at first. I was just giving the Poly vi sol and the vitamin e. After I read about the selenium and started giving it, was when I saw an improvement in her condition. Just search on the BYC site and/or google "wry neck" or "selenium and vitamin e for chickens"