I have a sick hen with a runny nose, she is very lethargic, will eat and drink some but mostly sits alone with eyes closed. I have put VetRX in her nostrals and drinking water but this doesn't seem to help her. It doesn't hurt her but I really see no improvement. I was told to get some cattle Tylan 50 but I am not sure how to administer to her. I wouldn't think I should give her a shot.. maybe a little in her drinking water? Any advice? I sure need some. By the way, she is a 6 month old buff orp.