I have a chicken with wry neck. I have done research and have read to use poly vi sol, vitamin E and selenium to treat this. I am trying to figure out how much of each I can give her without overdosing her. She has been doing the head turning thing since Sunday night (before that I didn't notice anything wrong with her other than she stopped laying about 2 weeks before that). She eats layer feed and free ranges in the yard all day. None of the other hens seem to have anything wrong with them (they are all laying just about every day). If you have any suggestions I am open to them. I just want to make sure I am giving her enough of the vitamins but not overdoing it. She is a little less than a year old. Thanks!