The Corid won't hurt, just don't add any extra vitamins/supplements that contain B1(Thiamine) to her food/water during treatment.UPDATE: She is doing much better today. She actually started to improve last night. Today she is much more active, tail being held upright, comb and waddles normal color, eating and drinking, less yellow in her urates. She drank a TON of water last night after rallying. I'm thinking she was dehydrated because she was lethargic and hadn't been drinking. New symotom over night though...blood in her poop. I'm going to continue to treat her (and the rest of the flock) for coccidia. Planning 2 tsp/gal in their water for 5 days followed by 1/2 tsp/gal for 14 days. Does this seeming the right tratment plan?
When was she last dewormed? In older birds, Coccidiosis is possible, but worms are something to consider as well.