We have a sick hen. She has been getting weaker an weaker, and I fear she might die soon. A friend who is very knowledgable looked at her today. She said it could be worms or cocci -- or something else. The hen is close to two years old. We are going to give her and the other three hens Ivomec in the water tomorrow. The only bottle we could get hold of quickly, through our friend, expired four years ago, but I'm hoping it will still do something. Can I also give her Cocci medicine just in case? Or would the two medicines at the same time be too much for a weak hen? I would try to get poop tested, but the sick hen doesnt seem to poop now. Our friend gave the hen an injection of vitamin, I think B. We don't have a farm supply store in our area, so it might take until Friday before I can get to an Agway where they hopefully sell Amprolium and Ivomec. Any advice would be appreciated.