http://www.smartgroups.com/message/readmessage.cfm? gid=1423922&messageid=7130&startid=7144 I would not recommend aspirin for ferrets. Liquid benadryl is a good option. If the nasal congestion is that bad then it would be a good thing to have your vet check him. He may need an antibiotic, (+/-pediapred for a few days), and afrin topically into his nose for a few days. If the infection has gone from an upper respiratory infection (ie nose and trachea) to a lower respiratory infection (ie lungs) then more aggressive treatment may be needed. You can also use a/d food or Gerber's baby food to help increase his appetite and water intake. Hope that helps, Jerry Murray, DVM [Posted in FML issue 4366]