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My name is***** and I am sorry to hear that Peeps has chronic upper respiratory signs.
Have you considered that she may have environmental allergies to things like pollen, dust and mold? I think that changing the litter and the food were great starts, but you can't change your house or the trees in your yard.Have you tried an antihistamine such as Chlorpheniramine? This is over-the-counter and comes in 4mg tablets. The standard cat dose is 1/2 tablet (2mg) twice daily. I would start with this one, but you can also try Benadryl. This comes in 25mg tablets and the standard cat dose is 1/2 tablet or 12.5mg twice daily.
A more potent option would be a steroid such as Prednisone. Cats tolerate steroids significantly better than dogs or humans so it would be worth a trial with a low dose prednisone for 2-4 weeks to see if there is improvement. If there isn't, then you can stop the steroids and try something different.
I hope this answer helps you. Feel free to contact me if you have any further questions.
Kansas State University
College of Veterinary Medicine Class of 2001
How is Peeps this evening? Were you able to try the antihistamines? Do you have any more questions for me?
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