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What causes a cat to cough for a week with chest sounds and mucus?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 6 months and 14 days old | 4 lbs

My cat has been coughing or trying to hack up something I thought maybe a furball so I got something to help move it through but this has been going on a week and it almost sounds like it's coming from his chest he did throw up a little bit but it was all mucus . Your thoughts please

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on October 15th, 2017

It could be that Sampson is suffering from a respiratory infection causing his symptoms. Given that it's been going on for a week, it's time to see a vet. I would take him into your vet first thing in the morning. If he is suffering from a respiratory infection, the vet can prescribe medications for his symptoms. In case he is suffering from one, I can give you some things you can do at home for him but please know that it does not substitute for a visit to the vet. First, you can try starting him on an L-lysine supplement - this is an amino acid that has been shown to help the immune system fight off respiratory infections more effectively. Enisyl and Viralys are both good brands, and can be purchased over the counter without a prescription - just follow the dosing instructions on the label based on your cat's weight. If he's congested, you can also try using a humidifier or bringing him into the bathroom with the door closed while you take a hot shower - the steam and humidity help to break up congestion and temporarily relieve symptoms associated with respiratory infections. I hope this helps!

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