Veterinary questions? Ask a Vet for Answers ASAP
Hello, you are through to Dr Linda, a UK based vet with 10 years of clinical experience.
I'm sorry to hear this and understand your concern for Sunny.
Has the vet run any tests such as a blood test, chest x-ray or heart scan?
As Sunny's signs have been ongoing for such a long time and they are worsening, we do need to run some tests now.
Unfortunately while listening to the heart and lungs can detect some issues, it cannot detect everything and a chest x-ray would be the first step here.
We need to check him for e.g. tracheal collapse, heart disease (such as mitral valve disease), fluid on the lungs, a mass in the chest etc.
Until we know why he is coughing, we cannot know which medicine he needs.
His dull coat could be a reflection of the stress hid body is under and coats can become less shiny as a dog ages.
Without an x-ray, this would not be something we could diagnose.
It is certainly one of several possibilities.
So, as I say, the next step is a chest x-ray.
Codeine is a cough suppressant.
It reduces the sensation that the dog needs to cough.
No a problem at all and hopefully we can get some answers soon.
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Wishing Sunny all the very best,