I have a 13 year old male tabby cat. He has been sneezing and every time he eats, he throws it up. The vomitting has been going on for a while but it had stopped for a month after he'd seen the vet but now he has started again. He also gets into these sneezing fits. Sometimes he even has green mucus. He has been to 3 vets and I can't seem to get this under control. The last vet he went to gave me Vibramycin for a bladder infection that he had and it really helped with his sneezing and the vomitting had even subsided. But now, we are right back where we started from. Can anyone help me with what could be wrong? His blood work came back OK. He can keep down water, just not food. He hasn't lost as much weight as he did when I had to take him to the vet and he a lot more alert and playful than he was before. HELP!

Green mucous in a cat or a human indicates infection. Time to back to the vet.

I understand that but he was sneezing when I took him to the vet all 3 times and it still continues. The sneezing has been going on for months. The vomitting is an off and on thing.

The sneezing may just be allergies. Cats and dogs can have allergies as well as people do.