Why is my cat still congested and snoring after multiple vet visits?
Upper respiratory infections in cats are caused by viruses as well as bacteria, so if Jade has a respiratory infection caused by a virus, antibiotics will not help. In addition, some cats have ongoing problems with these infections, and will have bouts of illness throughout their life. You can take her back into the vet for a health check, as she may benefit from some medications, but I will also give you a few things you can do at home for Jade as well. First, you can try starting her 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 she's congested, you can also try using a humidifier or bringing her 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.
Updated on September 23rd, 2025